{
  "id": "h0001",
  "width": 512,
  "height": 512,
  "image": "sample-xray.png",
  "coordinate_system": "x=column, y=row, image origin top-left; exported directly from the 512x512 saved sample",
  "kind": "saved model-predicted segmentation, not manual ground truth",
  "structures": [
    {
      "id": "heart",
      "channel": 121,
      "name": "heart",
      "color": "#cddedb",
      "mask": "mask-heart.png",
      "contour": [
        [
          413.0,
          446.5
        ],
        [
          401.0,
          452.5
        ],
        [
          398.0,
          452.5
        ],
        [
          397.0,
          453.5
        ],
        [
          391.0,
          453.5
        ],
        [
          390.0,
          454.5
        ],
        [
          385.0,
          454.5
        ],
        [
          384.0,
          455.5
        ],
        [
          373.0,
          455.5
        ],
        [
          372.0,
          456.5
        ],
        [
          361.0,
          456.5
        ],
        [
          360.0,
          457.5
        ],
        [
          356.0,
          457.5
        ],
        [
          355.0,
          456.5
        ],
        [
          351.0,
          456.5
        ],
        [
          350.0,
          455.5
        ],
        [
          347.0,
          455.5
        ],
        [
          346.0,
          454.5
        ],
        [
          344.0,
          454.5
        ],
        [
          340.0,
          452.5
        ],
        [
          337.0,
          452.5
        ],
        [
          336.0,
          451.5
        ],
        [
          329.0,
          450.5
        ],
        [
          328.0,
          449.5
        ],
        [
          326.0,
          449.5
        ],
        [
          325.0,
          448.5
        ],
        [
          320.0,
          447.5
        ],
        [
          317.0,
          445.5
        ],
        [
          314.0,
          445.5
        ],
        [
          310.0,
          442.5
        ],
        [
          302.0,
          438.5
        ],
        [
          299.0,
          438.5
        ],
        [
          298.0,
          437.5
        ],
        [
          291.0,
          437.5
        ],
        [
          290.0,
          436.5
        ],
        [
          286.0,
          436.5
        ],
        [
          285.0,
          435.5
        ],
        [
          283.0,
          435.5
        ],
        [
          279.0,
          433.5
        ],
        [
          273.0,
          433.5
        ],
        [
          272.0,
          432.5
        ],
        [
          263.0,
          432.5
        ],
        [
          262.0,
          431.5
        ],
        [
          258.0,
          431.5
        ],
        [
          257.0,
          430.5
        ],
        [
          252.0,
          430.5
        ],
        [
          244.0,
          426.5
        ],
        [
          242.0,
          426.5
        ],
        [
          238.0,
          423.5
        ],
        [
          213.0,
          411.5
        ],
        [
          208.5,
          407.0
        ],
        [
          208.5,
          406.0
        ],
        [
          205.5,
          403.0
        ],
        [
          205.5,
          402.0
        ],
        [
          200.5,
          396.0
        ],
        [
          199.5,
          394.0
        ],
        [
          199.5,
          392.0
        ],
        [
          198.5,
          391.0
        ],
        [
          198.5,
          389.0
        ],
        [
          196.5,
          386.0
        ],
        [
          196.5,
          384.0
        ],
        [
          189.5,
          371.0
        ],
        [
          189.5,
          369.0
        ],
        [
          188.5,
          368.0
        ],
        [
          188.5,
          364.0
        ],
        [
          187.5,
          363.0
        ],
        [
          187.5,
          352.0
        ],
        [
          186.5,
          351.0
        ],
        [
          186.5,
          343.0
        ],
        [
          185.5,
          342.0
        ],
        [
          185.5,
          326.0
        ],
        [
          186.5,
          325.0
        ],
        [
          186.5,
          321.0
        ],
        [
          187.5,
          320.0
        ],
        [
          187.5,
          317.0
        ],
        [
          190.5,
          311.0
        ],
        [
          190.5,
          309.0
        ],
        [
          195.5,
          300.0
        ],
        [
          195.5,
          298.0
        ],
        [
          199.5,
          291.0
        ],
        [
          199.5,
          289.0
        ],
        [
          201.5,
          286.0
        ],
        [
          201.5,
          284.0
        ],
        [
          205.5,
          276.0
        ],
        [
          205.5,
          274.0
        ],
        [
          207.5,
          270.0
        ],
        [
          207.5,
          267.0
        ],
        [
          209.5,
          263.0
        ],
        [
          213.0,
          259.5
        ],
        [
          221.0,
          255.5
        ],
        [
          221.5,
          254.0
        ],
        [
          229.0,
          247.5
        ],
        [
          235.0,
          247.5
        ],
        [
          236.0,
          246.5
        ],
        [
          243.0,
          246.5
        ],
        [
          244.0,
          245.5
        ],
        [
          247.0,
          245.5
        ],
        [
          259.0,
          239.5
        ],
        [
          265.0,
          239.5
        ],
        [
          266.0,
          240.5
        ],
        [
          267.0,
          239.5
        ],
        [
          269.0,
          239.5
        ],
        [
          273.0,
          242.5
        ],
        [
          275.0,
          242.5
        ],
        [
          276.0,
          243.5
        ],
        [
          282.0,
          243.5
        ],
        [
          284.0,
          245.5
        ],
        [
          288.0,
          245.5
        ],
        [
          289.0,
          244.5
        ],
        [
          294.0,
          244.5
        ],
        [
          295.0,
          245.5
        ],
        [
          298.0,
          245.5
        ],
        [
          302.0,
          248.5
        ],
        [
          305.0,
          248.5
        ],
        [
          309.0,
          250.5
        ],
        [
          312.0,
          250.5
        ],
        [
          313.0,
          251.5
        ],
        [
          315.0,
          251.5
        ],
        [
          319.0,
          253.5
        ],
        [
          323.0,
          253.5
        ],
        [
          324.0,
          254.5
        ],
        [
          329.0,
          254.5
        ],
        [
          330.0,
          255.5
        ],
        [
          332.0,
          255.5
        ],
        [
          333.0,
          256.5
        ],
        [
          338.0,
          257.5
        ],
        [
          340.0,
          259.5
        ],
        [
          343.0,
          260.5
        ],
        [
          346.0,
          263.5
        ],
        [
          347.0,
          263.5
        ],
        [
          347.5,
          265.0
        ],
        [
          353.5,
          271.0
        ],
        [
          353.5,
          272.0
        ],
        [
          355.5,
          274.0
        ],
        [
          358.5,
          281.0
        ],
        [
          363.5,
          287.0
        ],
        [
          366.5,
          293.0
        ],
        [
          376.0,
          302.5
        ],
        [
          377.0,
          302.5
        ],
        [
          385.5,
          311.0
        ],
        [
          385.5,
          312.0
        ],
        [
          403.5,
          330.0
        ],
        [
          403.5,
          331.0
        ],
        [
          405.5,
          333.0
        ],
        [
          405.5,
          334.0
        ],
        [
          407.5,
          336.0
        ],
        [
          407.5,
          337.0
        ],
        [
          409.5,
          339.0
        ],
        [
          409.5,
          340.0
        ],
        [
          412.5,
          344.0
        ],
        [
          413.5,
          349.0
        ],
        [
          416.5,
          355.0
        ],
        [
          416.5,
          358.0
        ],
        [
          420.5,
          365.0
        ],
        [
          420.5,
          367.0
        ],
        [
          427.5,
          381.0
        ],
        [
          427.5,
          383.0
        ],
        [
          428.5,
          384.0
        ],
        [
          428.5,
          386.0
        ],
        [
          430.5,
          390.0
        ],
        [
          430.5,
          393.0
        ],
        [
          431.5,
          394.0
        ],
        [
          431.5,
          406.0
        ],
        [
          430.5,
          407.0
        ],
        [
          430.5,
          413.0
        ],
        [
          428.5,
          416.0
        ],
        [
          427.5,
          421.0
        ],
        [
          423.5,
          427.0
        ],
        [
          423.5,
          429.0
        ],
        [
          421.5,
          432.0
        ],
        [
          421.5,
          434.0
        ],
        [
          418.5,
          440.0
        ]
      ],
      "centroid": [
        304.47353572999975,
        352.7189999223542
      ],
      "pixel_area": 38637
    },
    {
      "id": "LA",
      "channel": 122,
      "name": "heart atrium left",
      "color": "#ee9388",
      "mask": "mask-LA.png",
      "contour": [
        [
          302.0,
          378.5
        ],
        [
          299.0,
          378.5
        ],
        [
          298.0,
          379.5
        ],
        [
          294.0,
          377.5
        ],
        [
          291.0,
          377.5
        ],
        [
          290.0,
          376.5
        ],
        [
          288.0,
          376.5
        ],
        [
          282.0,
          373.5
        ],
        [
          269.0,
          361.5
        ],
        [
          265.0,
          359.5
        ],
        [
          261.0,
          359.5
        ],
        [
          260.0,
          358.5
        ],
        [
          258.0,
          358.5
        ],
        [
          257.0,
          357.5
        ],
        [
          254.0,
          357.5
        ],
        [
          250.0,
          355.5
        ],
        [
          244.0,
          349.5
        ],
        [
          243.0,
          349.5
        ],
        [
          240.0,
          346.5
        ],
        [
          239.0,
          346.5
        ],
        [
          231.5,
          339.0
        ],
        [
          230.5,
          336.0
        ],
        [
          228.5,
          334.0
        ],
        [
          227.5,
          329.0
        ],
        [
          225.5,
          327.0
        ],
        [
          225.5,
          326.0
        ],
        [
          222.5,
          322.0
        ],
        [
          221.5,
          317.0
        ],
        [
          219.5,
          314.0
        ],
        [
          219.5,
          311.0
        ],
        [
          218.5,
          310.0
        ],
        [
          218.5,
          304.0
        ],
        [
          217.5,
          303.0
        ],
        [
          217.5,
          298.0
        ],
        [
          218.5,
          297.0
        ],
        [
          218.5,
          290.0
        ],
        [
          219.5,
          289.0
        ],
        [
          219.5,
          284.0
        ],
        [
          222.5,
          278.0
        ],
        [
          226.0,
          274.5
        ],
        [
          228.0,
          273.5
        ],
        [
          230.0,
          273.5
        ],
        [
          233.0,
          271.5
        ],
        [
          236.0,
          271.5
        ],
        [
          240.0,
          269.5
        ],
        [
          242.0,
          267.5
        ],
        [
          249.0,
          264.5
        ],
        [
          251.0,
          262.5
        ],
        [
          252.0,
          262.5
        ],
        [
          259.0,
          255.5
        ],
        [
          265.0,
          252.5
        ],
        [
          267.0,
          253.5
        ],
        [
          269.0,
          253.5
        ],
        [
          270.0,
          254.5
        ],
        [
          281.0,
          254.5
        ],
        [
          282.0,
          255.5
        ],
        [
          293.0,
          255.5
        ],
        [
          294.0,
          256.5
        ],
        [
          296.0,
          256.5
        ],
        [
          298.0,
          257.5
        ],
        [
          311.0,
          271.5
        ],
        [
          312.0,
          271.5
        ],
        [
          314.0,
          273.5
        ],
        [
          318.0,
          275.5
        ],
        [
          321.0,
          275.5
        ],
        [
          323.0,
          276.5
        ],
        [
          325.0,
          278.5
        ],
        [
          329.0,
          280.5
        ],
        [
          334.5,
          286.0
        ],
        [
          334.5,
          288.0
        ],
        [
          336.5,
          290.0
        ],
        [
          336.5,
          291.0
        ],
        [
          339.5,
          295.0
        ],
        [
          339.5,
          297.0
        ],
        [
          341.5,
          300.0
        ],
        [
          341.5,
          302.0
        ],
        [
          342.5,
          303.0
        ],
        [
          342.5,
          305.0
        ],
        [
          344.5,
          309.0
        ],
        [
          344.5,
          312.0
        ],
        [
          345.5,
          313.0
        ],
        [
          345.5,
          320.0
        ],
        [
          344.5,
          321.0
        ],
        [
          344.5,
          328.0
        ],
        [
          340.5,
          334.0
        ],
        [
          340.5,
          336.0
        ],
        [
          338.5,
          340.0
        ],
        [
          330.5,
          350.0
        ],
        [
          330.5,
          352.0
        ],
        [
          327.5,
          358.0
        ],
        [
          323.5,
          362.0
        ],
        [
          323.5,
          363.0
        ],
        [
          314.0,
          372.5
        ]
      ],
      "centroid": [
        282.2519726926146,
        313.46156574164377
      ],
      "pixel_area": 11279,
      "landmarks": [
        {
          "id": "LA1",
          "position": [
            265,
            253
          ],
          "extremum": "top"
        },
        {
          "id": "LA2",
          "position": [
            298,
            379
          ],
          "extremum": "bottom"
        },
        {
          "id": "LA3",
          "position": [
            218,
            298
          ],
          "extremum": "image left"
        },
        {
          "id": "LA4",
          "position": [
            345,
            313
          ],
          "extremum": "image right"
        }
      ]
    },
    {
      "id": "RA",
      "channel": 123,
      "name": "heart atrium right",
      "color": "#92a7e0",
      "mask": "mask-RA.png",
      "contour": [
        [
          239.0,
          406.5
        ],
        [
          223.0,
          406.5
        ],
        [
          222.0,
          405.5
        ],
        [
          218.0,
          405.5
        ],
        [
          214.0,
          403.5
        ],
        [
          212.0,
          401.5
        ],
        [
          211.0,
          401.5
        ],
        [
          202.5,
          394.0
        ],
        [
          202.5,
          393.0
        ],
        [
          199.5,
          390.0
        ],
        [
          198.5,
          388.0
        ],
        [
          198.5,
          386.0
        ],
        [
          189.5,
          368.0
        ],
        [
          189.5,
          366.0
        ],
        [
          187.5,
          362.0
        ],
        [
          187.5,
          356.0
        ],
        [
          186.5,
          355.0
        ],
        [
          186.5,
          346.0
        ],
        [
          184.5,
          342.0
        ],
        [
          184.5,
          329.0
        ],
        [
          185.5,
          328.0
        ],
        [
          185.5,
          323.0
        ],
        [
          186.5,
          322.0
        ],
        [
          186.5,
          319.0
        ],
        [
          187.5,
          318.0
        ],
        [
          188.5,
          313.0
        ],
        [
          190.5,
          310.0
        ],
        [
          190.5,
          308.0
        ],
        [
          192.5,
          304.0
        ],
        [
          194.5,
          302.0
        ],
        [
          194.5,
          300.0
        ],
        [
          201.5,
          286.0
        ],
        [
          207.0,
          279.5
        ],
        [
          211.0,
          277.5
        ],
        [
          215.0,
          277.5
        ],
        [
          216.0,
          276.5
        ],
        [
          218.0,
          276.5
        ],
        [
          224.0,
          273.5
        ],
        [
          226.0,
          273.5
        ],
        [
          230.0,
          275.5
        ],
        [
          236.5,
          282.0
        ],
        [
          236.5,
          283.0
        ],
        [
          239.5,
          286.0
        ],
        [
          245.5,
          298.0
        ],
        [
          247.5,
          300.0
        ],
        [
          247.5,
          302.0
        ],
        [
          250.5,
          306.0
        ],
        [
          256.5,
          318.0
        ],
        [
          256.5,
          320.0
        ],
        [
          257.5,
          322.0
        ],
        [
          260.5,
          325.0
        ],
        [
          260.5,
          326.0
        ],
        [
          264.5,
          331.0
        ],
        [
          264.5,
          333.0
        ],
        [
          266.5,
          335.0
        ],
        [
          267.5,
          338.0
        ],
        [
          272.5,
          344.0
        ],
        [
          274.5,
          348.0
        ],
        [
          274.5,
          351.0
        ],
        [
          275.5,
          352.0
        ],
        [
          275.5,
          362.0
        ],
        [
          276.5,
          363.0
        ],
        [
          276.5,
          366.0
        ],
        [
          274.5,
          370.0
        ],
        [
          274.5,
          373.0
        ],
        [
          273.5,
          374.0
        ],
        [
          273.5,
          376.0
        ],
        [
          271.5,
          380.0
        ],
        [
          267.5,
          385.0
        ],
        [
          267.5,
          386.0
        ],
        [
          262.0,
          391.5
        ],
        [
          261.0,
          391.5
        ],
        [
          255.5,
          397.0
        ],
        [
          255.5,
          398.0
        ],
        [
          253.0,
          400.5
        ],
        [
          252.0,
          400.5
        ],
        [
          249.0,
          403.5
        ],
        [
          247.0,
          404.5
        ],
        [
          245.0,
          404.5
        ],
        [
          244.0,
          405.5
        ],
        [
          240.0,
          405.5
        ]
      ],
      "centroid": [
        227.56287773128778,
        345.04730357973034
      ],
      "pixel_area": 8604,
      "landmarks": [
        {
          "id": "RA1",
          "position": [
            224,
            274
          ],
          "extremum": "top"
        },
        {
          "id": "RA2",
          "position": [
            239,
            406
          ],
          "extremum": "bottom"
        },
        {
          "id": "RA3",
          "position": [
            185,
            329
          ],
          "extremum": "image left"
        },
        {
          "id": "RA4",
          "position": [
            276,
            363
          ],
          "extremum": "image right"
        }
      ]
    },
    {
      "id": "LV",
      "channel": 125,
      "name": "heart ventricle left",
      "color": "#8fc6a5",
      "mask": "mask-LV.png",
      "contour": [
        [
          405.0,
          431.5
        ],
        [
          403.0,
          431.5
        ],
        [
          399.0,
          433.5
        ],
        [
          396.0,
          433.5
        ],
        [
          395.0,
          434.5
        ],
        [
          390.0,
          434.5
        ],
        [
          389.0,
          435.5
        ],
        [
          384.0,
          435.5
        ],
        [
          383.0,
          434.5
        ],
        [
          380.0,
          434.5
        ],
        [
          379.0,
          433.5
        ],
        [
          374.0,
          432.5
        ],
        [
          372.0,
          430.5
        ],
        [
          363.0,
          426.5
        ],
        [
          358.0,
          422.5
        ],
        [
          356.0,
          421.5
        ],
        [
          354.0,
          421.5
        ],
        [
          353.0,
          420.5
        ],
        [
          351.0,
          420.5
        ],
        [
          345.0,
          416.5
        ],
        [
          340.0,
          415.5
        ],
        [
          333.0,
          411.5
        ],
        [
          330.0,
          411.5
        ],
        [
          329.0,
          410.5
        ],
        [
          327.0,
          410.5
        ],
        [
          322.0,
          407.5
        ],
        [
          320.0,
          407.5
        ],
        [
          314.0,
          404.5
        ],
        [
          312.0,
          404.5
        ],
        [
          309.0,
          402.5
        ],
        [
          304.0,
          401.5
        ],
        [
          302.0,
          400.5
        ],
        [
          294.5,
          393.0
        ],
        [
          294.5,
          392.0
        ],
        [
          291.5,
          389.0
        ],
        [
          291.5,
          388.0
        ],
        [
          288.5,
          384.0
        ],
        [
          288.5,
          382.0
        ],
        [
          286.5,
          379.0
        ],
        [
          286.5,
          377.0
        ],
        [
          284.5,
          373.0
        ],
        [
          284.5,
          370.0
        ],
        [
          283.5,
          369.0
        ],
        [
          283.5,
          367.0
        ],
        [
          281.5,
          363.0
        ],
        [
          281.5,
          359.0
        ],
        [
          280.5,
          358.0
        ],
        [
          280.5,
          339.0
        ],
        [
          281.5,
          338.0
        ],
        [
          281.5,
          336.0
        ],
        [
          282.5,
          335.0
        ],
        [
          283.5,
          330.0
        ],
        [
          288.5,
          320.0
        ],
        [
          290.5,
          318.0
        ],
        [
          291.5,
          315.0
        ],
        [
          294.0,
          312.5
        ],
        [
          299.0,
          310.5
        ],
        [
          305.0,
          305.5
        ],
        [
          309.0,
          303.5
        ],
        [
          311.0,
          303.5
        ],
        [
          312.0,
          302.5
        ],
        [
          315.0,
          302.5
        ],
        [
          321.0,
          305.5
        ],
        [
          329.0,
          305.5
        ],
        [
          333.0,
          307.5
        ],
        [
          336.0,
          307.5
        ],
        [
          337.0,
          308.5
        ],
        [
          342.0,
          309.5
        ],
        [
          349.0,
          313.5
        ],
        [
          351.0,
          313.5
        ],
        [
          352.0,
          314.5
        ],
        [
          354.0,
          314.5
        ],
        [
          355.0,
          315.5
        ],
        [
          357.0,
          315.5
        ],
        [
          358.0,
          316.5
        ],
        [
          360.0,
          316.5
        ],
        [
          364.0,
          318.5
        ],
        [
          372.0,
          326.5
        ],
        [
          375.0,
          327.5
        ],
        [
          378.0,
          330.5
        ],
        [
          381.0,
          331.5
        ],
        [
          395.5,
          346.0
        ],
        [
          395.5,
          347.0
        ],
        [
          398.5,
          350.0
        ],
        [
          398.5,
          352.0
        ],
        [
          400.5,
          356.0
        ],
        [
          400.5,
          359.0
        ],
        [
          401.5,
          360.0
        ],
        [
          401.5,
          362.0
        ],
        [
          407.5,
          373.0
        ],
        [
          407.5,
          375.0
        ],
        [
          411.5,
          382.0
        ],
        [
          411.5,
          384.0
        ],
        [
          412.5,
          385.0
        ],
        [
          413.5,
          390.0
        ],
        [
          415.5,
          393.0
        ],
        [
          415.5,
          395.0
        ],
        [
          418.5,
          400.0
        ],
        [
          418.5,
          410.0
        ],
        [
          417.5,
          411.0
        ],
        [
          417.5,
          413.0
        ],
        [
          413.5,
          421.0
        ],
        [
          410.5,
          424.0
        ],
        [
          408.5,
          428.0
        ]
      ],
      "centroid": [
        347.82010927179317,
        369.06711245209164
      ],
      "pixel_area": 12263,
      "landmarks": [
        {
          "id": "LV1",
          "position": [
            312,
            303
          ],
          "extremum": "top"
        },
        {
          "id": "LV2",
          "position": [
            389,
            435
          ],
          "extremum": "bottom"
        },
        {
          "id": "LV3",
          "position": [
            281,
            339
          ],
          "extremum": "image left"
        },
        {
          "id": "LV4",
          "position": [
            418,
            400
          ],
          "extremum": "image right"
        }
      ]
    },
    {
      "id": "RV",
      "channel": 126,
      "name": "heart ventricle right",
      "color": "#edc987",
      "mask": "mask-RV.png",
      "contour": [
        [
          359.0,
          447.5
        ],
        [
          357.0,
          447.5
        ],
        [
          356.0,
          448.5
        ],
        [
          351.0,
          448.5
        ],
        [
          350.0,
          449.5
        ],
        [
          349.0,
          448.5
        ],
        [
          342.0,
          447.5
        ],
        [
          341.0,
          446.5
        ],
        [
          339.0,
          446.5
        ],
        [
          338.0,
          445.5
        ],
        [
          336.0,
          445.5
        ],
        [
          335.0,
          444.5
        ],
        [
          330.0,
          443.5
        ],
        [
          326.0,
          440.5
        ],
        [
          324.0,
          440.5
        ],
        [
          322.0,
          438.5
        ],
        [
          318.0,
          436.5
        ],
        [
          316.0,
          436.5
        ],
        [
          315.0,
          435.5
        ],
        [
          312.0,
          435.5
        ],
        [
          311.0,
          434.5
        ],
        [
          307.0,
          434.5
        ],
        [
          306.0,
          433.5
        ],
        [
          285.0,
          433.5
        ],
        [
          284.0,
          432.5
        ],
        [
          281.0,
          432.5
        ],
        [
          280.0,
          431.5
        ],
        [
          273.0,
          430.5
        ],
        [
          272.0,
          429.5
        ],
        [
          270.0,
          429.5
        ],
        [
          269.0,
          428.5
        ],
        [
          267.0,
          428.5
        ],
        [
          263.0,
          426.5
        ],
        [
          260.0,
          426.5
        ],
        [
          259.0,
          425.5
        ],
        [
          254.0,
          425.5
        ],
        [
          248.0,
          422.5
        ],
        [
          236.0,
          410.5
        ],
        [
          235.0,
          410.5
        ],
        [
          230.5,
          403.0
        ],
        [
          230.5,
          401.0
        ],
        [
          229.5,
          400.0
        ],
        [
          229.5,
          396.0
        ],
        [
          228.5,
          395.0
        ],
        [
          228.5,
          385.0
        ],
        [
          229.5,
          384.0
        ],
        [
          229.5,
          381.0
        ],
        [
          230.5,
          380.0
        ],
        [
          230.5,
          378.0
        ],
        [
          233.5,
          372.0
        ],
        [
          233.5,
          369.0
        ],
        [
          234.5,
          368.0
        ],
        [
          234.5,
          365.0
        ],
        [
          235.5,
          364.0
        ],
        [
          235.5,
          360.0
        ],
        [
          236.5,
          359.0
        ],
        [
          236.5,
          355.0
        ],
        [
          237.5,
          354.0
        ],
        [
          237.5,
          352.0
        ],
        [
          241.5,
          348.0
        ],
        [
          243.5,
          344.0
        ],
        [
          243.5,
          342.0
        ],
        [
          246.5,
          338.0
        ],
        [
          250.5,
          330.0
        ],
        [
          250.5,
          328.0
        ],
        [
          256.0,
          322.5
        ],
        [
          259.0,
          321.5
        ],
        [
          266.5,
          313.0
        ],
        [
          269.5,
          307.0
        ],
        [
          269.5,
          305.0
        ],
        [
          270.5,
          304.0
        ],
        [
          270.5,
          300.0
        ],
        [
          274.5,
          292.0
        ],
        [
          274.5,
          290.0
        ],
        [
          275.5,
          288.0
        ],
        [
          277.5,
          286.0
        ],
        [
          278.5,
          283.0
        ],
        [
          282.0,
          279.5
        ],
        [
          284.0,
          278.5
        ],
        [
          290.0,
          278.5
        ],
        [
          291.0,
          277.5
        ],
        [
          294.0,
          277.5
        ],
        [
          295.0,
          276.5
        ],
        [
          298.0,
          276.5
        ],
        [
          299.0,
          275.5
        ],
        [
          317.0,
          275.5
        ],
        [
          318.0,
          276.5
        ],
        [
          321.0,
          275.5
        ],
        [
          322.0,
          276.5
        ],
        [
          324.0,
          276.5
        ],
        [
          325.0,
          277.5
        ],
        [
          327.0,
          277.5
        ],
        [
          331.0,
          279.5
        ],
        [
          338.5,
          287.0
        ],
        [
          340.5,
          291.0
        ],
        [
          341.5,
          296.0
        ],
        [
          345.5,
          303.0
        ],
        [
          345.5,
          305.0
        ],
        [
          346.5,
          306.0
        ],
        [
          346.5,
          309.0
        ],
        [
          349.5,
          314.0
        ],
        [
          349.5,
          318.0
        ],
        [
          352.5,
          323.0
        ],
        [
          352.5,
          326.0
        ],
        [
          354.5,
          330.0
        ],
        [
          354.5,
          334.0
        ],
        [
          356.5,
          338.0
        ],
        [
          356.5,
          341.0
        ],
        [
          357.5,
          342.0
        ],
        [
          357.5,
          344.0
        ],
        [
          360.5,
          349.0
        ],
        [
          360.5,
          363.0
        ],
        [
          361.5,
          364.0
        ],
        [
          361.5,
          371.0
        ],
        [
          360.5,
          372.0
        ],
        [
          360.5,
          375.0
        ],
        [
          357.5,
          379.0
        ],
        [
          356.5,
          382.0
        ],
        [
          357.5,
          383.0
        ],
        [
          357.5,
          385.0
        ],
        [
          359.5,
          387.0
        ],
        [
          361.5,
          391.0
        ],
        [
          361.5,
          394.0
        ],
        [
          363.5,
          397.0
        ],
        [
          363.5,
          399.0
        ],
        [
          365.5,
          403.0
        ],
        [
          366.5,
          412.0
        ],
        [
          367.5,
          413.0
        ],
        [
          367.5,
          415.0
        ],
        [
          370.5,
          421.0
        ],
        [
          370.5,
          427.0
        ],
        [
          371.5,
          428.0
        ],
        [
          371.5,
          436.0
        ],
        [
          370.5,
          437.0
        ],
        [
          370.5,
          439.0
        ],
        [
          369.5,
          441.0
        ],
        [
          367.0,
          443.5
        ]
      ],
      "centroid": [
        303.398893244178,
        366.6047959418953
      ],
      "pixel_area": 17348,
      "landmarks": [
        {
          "id": "RV1",
          "position": [
            299,
            276
          ],
          "extremum": "top"
        },
        {
          "id": "RV2",
          "position": [
            350,
            449
          ],
          "extremum": "bottom"
        },
        {
          "id": "RV3",
          "position": [
            229,
            385
          ],
          "extremum": "image left"
        },
        {
          "id": "RV4",
          "position": [
            371,
            428
          ],
          "extremum": "image right"
        }
      ]
    },
    {
      "id": "aorta",
      "channel": 127,
      "name": "aorta",
      "color": "#d68891",
      "mask": "mask-aorta.png",
      "contour": [
        [
          264.5,
          511.0
        ],
        [
          264.5,
          506.0
        ],
        [
          263.5,
          505.0
        ],
        [
          263.5,
          499.0
        ],
        [
          264.5,
          498.0
        ],
        [
          264.5,
          494.0
        ],
        [
          265.5,
          493.0
        ],
        [
          265.5,
          487.0
        ],
        [
          266.5,
          486.0
        ],
        [
          266.5,
          468.0
        ],
        [
          267.5,
          467.0
        ],
        [
          267.5,
          445.0
        ],
        [
          268.5,
          444.0
        ],
        [
          268.5,
          440.0
        ],
        [
          269.5,
          439.0
        ],
        [
          269.5,
          436.0
        ],
        [
          270.5,
          435.0
        ],
        [
          270.5,
          431.0
        ],
        [
          271.5,
          430.0
        ],
        [
          271.5,
          424.0
        ],
        [
          272.5,
          423.0
        ],
        [
          272.5,
          400.0
        ],
        [
          273.5,
          399.0
        ],
        [
          273.5,
          397.0
        ],
        [
          272.5,
          396.0
        ],
        [
          272.5,
          375.0
        ],
        [
          271.5,
          374.0
        ],
        [
          272.5,
          372.0
        ],
        [
          272.5,
          339.0
        ],
        [
          271.5,
          338.0
        ],
        [
          271.5,
          333.0
        ],
        [
          270.5,
          332.0
        ],
        [
          270.5,
          330.0
        ],
        [
          269.5,
          328.0
        ],
        [
          265.0,
          322.5
        ],
        [
          262.0,
          322.5
        ],
        [
          260.0,
          320.5
        ],
        [
          259.0,
          320.5
        ],
        [
          254.5,
          316.0
        ],
        [
          254.5,
          315.0
        ],
        [
          248.5,
          307.0
        ],
        [
          247.5,
          305.0
        ],
        [
          247.5,
          303.0
        ],
        [
          242.5,
          294.0
        ],
        [
          242.5,
          292.0
        ],
        [
          237.5,
          282.0
        ],
        [
          234.5,
          279.0
        ],
        [
          231.5,
          273.0
        ],
        [
          231.5,
          271.0
        ],
        [
          230.5,
          270.0
        ],
        [
          230.5,
          266.0
        ],
        [
          227.5,
          260.0
        ],
        [
          227.5,
          254.0
        ],
        [
          226.5,
          253.0
        ],
        [
          226.5,
          249.0
        ],
        [
          225.5,
          248.0
        ],
        [
          225.5,
          245.0
        ],
        [
          224.5,
          244.0
        ],
        [
          224.5,
          226.0
        ],
        [
          225.5,
          225.0
        ],
        [
          225.5,
          220.0
        ],
        [
          227.5,
          216.0
        ],
        [
          227.5,
          213.0
        ],
        [
          228.5,
          212.0
        ],
        [
          228.5,
          207.0
        ],
        [
          229.5,
          206.0
        ],
        [
          229.5,
          203.0
        ],
        [
          230.5,
          202.0
        ],
        [
          230.5,
          200.0
        ],
        [
          231.5,
          199.0
        ],
        [
          232.5,
          194.0
        ],
        [
          235.5,
          190.0
        ],
        [
          235.5,
          189.0
        ],
        [
          237.5,
          187.0
        ],
        [
          240.5,
          181.0
        ],
        [
          240.5,
          178.0
        ],
        [
          241.5,
          177.0
        ],
        [
          241.5,
          169.0
        ],
        [
          242.5,
          168.0
        ],
        [
          242.5,
          166.0
        ],
        [
          243.5,
          165.0
        ],
        [
          243.5,
          161.0
        ],
        [
          244.5,
          160.0
        ],
        [
          244.5,
          158.0
        ],
        [
          246.5,
          154.0
        ],
        [
          252.5,
          147.0
        ],
        [
          252.5,
          146.0
        ],
        [
          256.5,
          142.0
        ],
        [
          256.5,
          141.0
        ],
        [
          261.0,
          136.5
        ],
        [
          268.0,
          133.5
        ],
        [
          270.0,
          131.5
        ],
        [
          273.0,
          130.5
        ],
        [
          275.0,
          128.5
        ],
        [
          279.0,
          126.5
        ],
        [
          281.0,
          126.5
        ],
        [
          284.0,
          123.5
        ],
        [
          286.0,
          123.5
        ],
        [
          289.0,
          121.5
        ],
        [
          293.0,
          121.5
        ],
        [
          300.0,
          128.5
        ],
        [
          305.0,
          130.5
        ],
        [
          307.0,
          132.5
        ],
        [
          311.0,
          134.5
        ],
        [
          313.5,
          137.0
        ],
        [
          318.5,
          147.0
        ],
        [
          318.5,
          150.0
        ],
        [
          319.5,
          151.0
        ],
        [
          319.5,
          154.0
        ],
        [
          320.5,
          155.0
        ],
        [
          320.5,
          160.0
        ],
        [
          321.5,
          161.0
        ],
        [
          321.5,
          165.0
        ],
        [
          322.5,
          166.0
        ],
        [
          322.5,
          180.0
        ],
        [
          321.5,
          181.0
        ],
        [
          321.5,
          186.0
        ],
        [
          320.5,
          187.0
        ],
        [
          320.5,
          192.0
        ],
        [
          319.5,
          193.0
        ],
        [
          319.5,
          199.0
        ],
        [
          318.5,
          200.0
        ],
        [
          318.5,
          205.0
        ],
        [
          317.5,
          206.0
        ],
        [
          317.5,
          210.0
        ],
        [
          316.5,
          211.0
        ],
        [
          316.5,
          216.0
        ],
        [
          315.5,
          217.0
        ],
        [
          315.5,
          221.0
        ],
        [
          314.5,
          222.0
        ],
        [
          314.5,
          228.0
        ],
        [
          313.5,
          229.0
        ],
        [
          313.5,
          244.0
        ],
        [
          312.5,
          245.0
        ],
        [
          312.5,
          271.0
        ],
        [
          313.5,
          272.0
        ],
        [
          313.5,
          299.0
        ],
        [
          314.5,
          300.0
        ],
        [
          314.5,
          320.0
        ],
        [
          315.5,
          321.0
        ],
        [
          315.5,
          334.0
        ],
        [
          316.5,
          335.0
        ],
        [
          316.5,
          341.0
        ],
        [
          317.5,
          342.0
        ],
        [
          317.5,
          358.0
        ],
        [
          316.5,
          359.0
        ],
        [
          316.5,
          365.0
        ],
        [
          317.5,
          366.0
        ],
        [
          317.5,
          379.0
        ],
        [
          318.5,
          380.0
        ],
        [
          318.5,
          410.0
        ],
        [
          317.5,
          411.0
        ],
        [
          317.5,
          419.0
        ],
        [
          316.5,
          420.0
        ],
        [
          316.5,
          429.0
        ],
        [
          315.5,
          430.0
        ],
        [
          315.5,
          437.0
        ],
        [
          314.5,
          438.0
        ],
        [
          314.5,
          444.0
        ],
        [
          313.5,
          445.0
        ],
        [
          313.5,
          453.0
        ],
        [
          312.5,
          454.0
        ],
        [
          312.5,
          459.0
        ],
        [
          311.5,
          460.0
        ],
        [
          311.5,
          466.0
        ],
        [
          310.5,
          467.0
        ],
        [
          310.5,
          470.0
        ],
        [
          309.5,
          471.0
        ],
        [
          309.5,
          473.0
        ],
        [
          308.5,
          474.0
        ],
        [
          308.5,
          477.0
        ],
        [
          307.5,
          478.0
        ],
        [
          307.5,
          484.0
        ],
        [
          306.5,
          485.0
        ],
        [
          306.5,
          492.0
        ],
        [
          305.5,
          493.0
        ],
        [
          305.5,
          503.0
        ],
        [
          304.5,
          504.0
        ],
        [
          304.5,
          508.0
        ],
        [
          303.5,
          509.0
        ],
        [
          303.5,
          511.0
        ]
      ],
      "centroid": [
        282.07068163387254,
        293.47061334243887
      ],
      "pixel_area": 23429
    },
    {
      "id": "ascending_aorta",
      "channel": 128,
      "name": "ascending aorta",
      "color": "#e6aaa5",
      "mask": "mask-ascending_aorta.png",
      "contour": [
        [
          277.0,
          326.5
        ],
        [
          271.0,
          326.5
        ],
        [
          270.0,
          325.5
        ],
        [
          268.0,
          325.5
        ],
        [
          260.0,
          321.5
        ],
        [
          256.5,
          318.0
        ],
        [
          256.5,
          317.0
        ],
        [
          252.5,
          312.0
        ],
        [
          251.5,
          309.0
        ],
        [
          249.5,
          307.0
        ],
        [
          242.5,
          293.0
        ],
        [
          238.5,
          288.0
        ],
        [
          233.5,
          278.0
        ],
        [
          233.5,
          276.0
        ],
        [
          232.5,
          275.0
        ],
        [
          232.5,
          272.0
        ],
        [
          231.5,
          271.0
        ],
        [
          231.5,
          266.0
        ],
        [
          230.5,
          265.0
        ],
        [
          230.5,
          263.0
        ],
        [
          229.5,
          262.0
        ],
        [
          229.5,
          260.0
        ],
        [
          227.5,
          256.0
        ],
        [
          227.5,
          253.0
        ],
        [
          226.5,
          252.0
        ],
        [
          226.5,
          248.0
        ],
        [
          225.5,
          247.0
        ],
        [
          225.5,
          241.0
        ],
        [
          224.5,
          240.0
        ],
        [
          224.5,
          229.0
        ],
        [
          225.5,
          228.0
        ],
        [
          225.5,
          224.0
        ],
        [
          226.5,
          223.0
        ],
        [
          226.5,
          221.0
        ],
        [
          228.5,
          217.0
        ],
        [
          228.5,
          213.0
        ],
        [
          229.5,
          212.0
        ],
        [
          229.5,
          205.0
        ],
        [
          230.5,
          204.0
        ],
        [
          230.5,
          200.0
        ],
        [
          231.5,
          199.0
        ],
        [
          231.5,
          196.0
        ],
        [
          232.5,
          194.0
        ],
        [
          239.0,
          187.5
        ],
        [
          240.0,
          187.5
        ],
        [
          243.0,
          184.5
        ],
        [
          245.0,
          183.5
        ],
        [
          261.0,
          183.5
        ],
        [
          262.0,
          182.5
        ],
        [
          266.0,
          182.5
        ],
        [
          267.0,
          183.5
        ],
        [
          279.0,
          183.5
        ],
        [
          283.5,
          187.0
        ],
        [
          285.5,
          192.0
        ],
        [
          287.0,
          192.5
        ],
        [
          290.5,
          197.0
        ],
        [
          290.5,
          199.0
        ],
        [
          286.5,
          207.0
        ],
        [
          286.5,
          209.0
        ],
        [
          284.5,
          213.0
        ],
        [
          284.5,
          217.0
        ],
        [
          283.5,
          218.0
        ],
        [
          283.5,
          220.0
        ],
        [
          281.5,
          224.0
        ],
        [
          281.5,
          228.0
        ],
        [
          280.5,
          229.0
        ],
        [
          280.5,
          235.0
        ],
        [
          279.5,
          236.0
        ],
        [
          279.5,
          245.0
        ],
        [
          280.5,
          246.0
        ],
        [
          280.5,
          249.0
        ],
        [
          281.5,
          250.0
        ],
        [
          282.5,
          255.0
        ],
        [
          284.5,
          258.0
        ],
        [
          285.5,
          263.0
        ],
        [
          287.5,
          266.0
        ],
        [
          288.5,
          271.0
        ],
        [
          290.5,
          275.0
        ],
        [
          294.5,
          280.0
        ],
        [
          296.5,
          287.0
        ],
        [
          300.5,
          291.0
        ],
        [
          301.5,
          293.0
        ],
        [
          301.5,
          295.0
        ],
        [
          302.5,
          296.0
        ],
        [
          302.5,
          299.0
        ],
        [
          303.5,
          300.0
        ],
        [
          303.5,
          304.0
        ],
        [
          302.5,
          306.0
        ],
        [
          301.0,
          306.5
        ],
        [
          289.0,
          319.5
        ],
        [
          286.0,
          320.5
        ],
        [
          283.0,
          323.5
        ]
      ],
      "centroid": [
        261.42726307406423,
        252.17202017520574
      ],
      "pixel_area": 7534
    },
    {
      "id": "descending_aorta",
      "channel": 129,
      "name": "descending aorta",
      "color": "#b7a3cd",
      "mask": "mask-descending_aorta.png",
      "contour": [
        [
          264.5,
          511.0
        ],
        [
          264.5,
          503.0
        ],
        [
          263.5,
          501.0
        ],
        [
          264.5,
          500.0
        ],
        [
          264.5,
          495.0
        ],
        [
          265.5,
          494.0
        ],
        [
          265.5,
          488.0
        ],
        [
          266.5,
          487.0
        ],
        [
          266.5,
          468.0
        ],
        [
          267.5,
          467.0
        ],
        [
          267.5,
          446.0
        ],
        [
          268.5,
          445.0
        ],
        [
          268.5,
          439.0
        ],
        [
          269.5,
          438.0
        ],
        [
          269.5,
          435.0
        ],
        [
          270.5,
          434.0
        ],
        [
          270.5,
          430.0
        ],
        [
          271.5,
          429.0
        ],
        [
          271.5,
          425.0
        ],
        [
          272.5,
          424.0
        ],
        [
          272.5,
          419.0
        ],
        [
          273.5,
          418.0
        ],
        [
          273.5,
          412.0
        ],
        [
          274.5,
          411.0
        ],
        [
          274.5,
          396.0
        ],
        [
          273.5,
          395.0
        ],
        [
          273.5,
          391.0
        ],
        [
          272.5,
          390.0
        ],
        [
          272.5,
          384.0
        ],
        [
          271.5,
          383.0
        ],
        [
          271.5,
          371.0
        ],
        [
          272.5,
          370.0
        ],
        [
          272.5,
          356.0
        ],
        [
          273.5,
          355.0
        ],
        [
          273.5,
          338.0
        ],
        [
          272.5,
          337.0
        ],
        [
          272.5,
          324.0
        ],
        [
          273.5,
          323.0
        ],
        [
          273.5,
          317.0
        ],
        [
          272.5,
          316.0
        ],
        [
          272.5,
          312.0
        ],
        [
          273.5,
          311.0
        ],
        [
          273.5,
          309.0
        ],
        [
          272.5,
          308.0
        ],
        [
          272.5,
          299.0
        ],
        [
          273.5,
          298.0
        ],
        [
          273.5,
          278.0
        ],
        [
          272.5,
          277.0
        ],
        [
          272.5,
          272.0
        ],
        [
          271.5,
          271.0
        ],
        [
          271.5,
          256.0
        ],
        [
          272.5,
          255.0
        ],
        [
          272.5,
          245.0
        ],
        [
          271.5,
          244.0
        ],
        [
          271.5,
          208.0
        ],
        [
          270.5,
          207.0
        ],
        [
          270.5,
          193.0
        ],
        [
          272.5,
          189.0
        ],
        [
          274.0,
          187.5
        ],
        [
          276.0,
          187.5
        ],
        [
          277.0,
          186.5
        ],
        [
          280.0,
          186.5
        ],
        [
          281.0,
          185.5
        ],
        [
          284.0,
          185.5
        ],
        [
          285.0,
          184.5
        ],
        [
          287.0,
          185.5
        ],
        [
          289.0,
          185.5
        ],
        [
          290.0,
          186.5
        ],
        [
          292.0,
          186.5
        ],
        [
          293.0,
          187.5
        ],
        [
          295.0,
          187.5
        ],
        [
          298.0,
          189.5
        ],
        [
          311.0,
          189.5
        ],
        [
          317.0,
          186.5
        ],
        [
          319.5,
          190.0
        ],
        [
          319.5,
          198.0
        ],
        [
          318.5,
          199.0
        ],
        [
          318.5,
          206.0
        ],
        [
          317.5,
          207.0
        ],
        [
          317.5,
          211.0
        ],
        [
          316.5,
          212.0
        ],
        [
          316.5,
          216.0
        ],
        [
          315.5,
          217.0
        ],
        [
          315.5,
          221.0
        ],
        [
          314.5,
          222.0
        ],
        [
          314.5,
          226.0
        ],
        [
          313.5,
          227.0
        ],
        [
          313.5,
          259.0
        ],
        [
          312.5,
          260.0
        ],
        [
          312.5,
          271.0
        ],
        [
          313.5,
          272.0
        ],
        [
          313.5,
          311.0
        ],
        [
          314.5,
          312.0
        ],
        [
          314.5,
          323.0
        ],
        [
          315.5,
          324.0
        ],
        [
          315.5,
          336.0
        ],
        [
          316.5,
          337.0
        ],
        [
          316.5,
          341.0
        ],
        [
          317.5,
          342.0
        ],
        [
          317.5,
          377.0
        ],
        [
          318.5,
          378.0
        ],
        [
          318.5,
          396.0
        ],
        [
          319.5,
          398.0
        ],
        [
          318.5,
          399.0
        ],
        [
          318.5,
          410.0
        ],
        [
          317.5,
          411.0
        ],
        [
          317.5,
          415.0
        ],
        [
          316.5,
          416.0
        ],
        [
          316.5,
          425.0
        ],
        [
          315.5,
          426.0
        ],
        [
          315.5,
          434.0
        ],
        [
          314.5,
          435.0
        ],
        [
          314.5,
          439.0
        ],
        [
          313.5,
          440.0
        ],
        [
          313.5,
          444.0
        ],
        [
          312.5,
          445.0
        ],
        [
          312.5,
          456.0
        ],
        [
          311.5,
          457.0
        ],
        [
          311.5,
          464.0
        ],
        [
          310.5,
          465.0
        ],
        [
          310.5,
          469.0
        ],
        [
          309.5,
          470.0
        ],
        [
          309.5,
          472.0
        ],
        [
          308.5,
          473.0
        ],
        [
          308.5,
          476.0
        ],
        [
          307.5,
          477.0
        ],
        [
          307.5,
          485.0
        ],
        [
          306.5,
          486.0
        ],
        [
          306.5,
          491.0
        ],
        [
          305.5,
          492.0
        ],
        [
          305.5,
          497.0
        ],
        [
          304.5,
          498.0
        ],
        [
          305.5,
          499.0
        ],
        [
          305.5,
          502.0
        ],
        [
          304.5,
          503.0
        ],
        [
          304.5,
          509.0
        ],
        [
          303.5,
          511.0
        ]
      ],
      "centroid": [
        292.6656421985562,
        349.03459366735757
      ],
      "pixel_area": 13991
    },
    {
      "id": "aortic_arch",
      "channel": 130,
      "name": "aortic arch",
      "color": "#e7b38b",
      "mask": "mask-aortic_arch.png",
      "contour": [
        [
          322.5,
          182.0
        ],
        [
          321.5,
          183.0
        ],
        [
          321.5,
          185.0
        ],
        [
          317.0,
          189.5
        ],
        [
          315.0,
          189.5
        ],
        [
          314.0,
          190.5
        ],
        [
          308.0,
          190.5
        ],
        [
          302.0,
          187.5
        ],
        [
          299.0,
          187.5
        ],
        [
          298.0,
          186.5
        ],
        [
          293.0,
          186.5
        ],
        [
          289.0,
          184.5
        ],
        [
          285.0,
          184.5
        ],
        [
          284.0,
          183.5
        ],
        [
          280.0,
          183.5
        ],
        [
          279.0,
          182.5
        ],
        [
          260.0,
          182.5
        ],
        [
          259.0,
          183.5
        ],
        [
          256.0,
          183.5
        ],
        [
          255.0,
          184.5
        ],
        [
          251.0,
          184.5
        ],
        [
          250.0,
          185.5
        ],
        [
          249.0,
          184.5
        ],
        [
          247.0,
          184.5
        ],
        [
          245.0,
          183.5
        ],
        [
          244.5,
          182.0
        ],
        [
          242.5,
          180.0
        ],
        [
          240.5,
          176.0
        ],
        [
          240.5,
          172.0
        ],
        [
          239.5,
          171.0
        ],
        [
          239.5,
          169.0
        ],
        [
          243.5,
          162.0
        ],
        [
          243.5,
          160.0
        ],
        [
          246.5,
          154.0
        ],
        [
          248.5,
          152.0
        ],
        [
          250.5,
          148.0
        ],
        [
          254.5,
          144.0
        ],
        [
          254.5,
          143.0
        ],
        [
          260.0,
          137.5
        ],
        [
          261.0,
          137.5
        ],
        [
          266.0,
          132.5
        ],
        [
          273.0,
          129.5
        ],
        [
          277.0,
          126.5
        ],
        [
          282.0,
          126.5
        ],
        [
          290.0,
          122.5
        ],
        [
          294.0,
          122.5
        ],
        [
          300.0,
          128.5
        ],
        [
          308.0,
          132.5
        ],
        [
          314.5,
          139.0
        ],
        [
          318.5,
          147.0
        ],
        [
          318.5,
          150.0
        ],
        [
          320.5,
          154.0
        ],
        [
          320.5,
          157.0
        ],
        [
          321.5,
          158.0
        ],
        [
          321.5,
          162.0
        ],
        [
          322.5,
          163.0
        ]
      ],
      "centroid": [
        284.4476309226933,
        159.32668329177056
      ],
      "pixel_area": 4010
    },
    {
      "id": "pulmonary_artery",
      "channel": 131,
      "name": "pulmonary artery",
      "color": "#82c3ce",
      "mask": "mask-pulmonary_artery.png",
      "contour": [
        [
          84.5,
          356.0
        ],
        [
          84.5,
          353.0
        ],
        [
          83.5,
          352.0
        ],
        [
          83.5,
          345.0
        ],
        [
          88.5,
          337.0
        ],
        [
          88.5,
          333.0
        ],
        [
          87.5,
          332.0
        ],
        [
          87.5,
          330.0
        ],
        [
          100.0,
          318.5
        ],
        [
          101.0,
          318.5
        ],
        [
          104.0,
          315.5
        ],
        [
          105.0,
          315.5
        ],
        [
          118.5,
          302.0
        ],
        [
          118.5,
          301.0
        ],
        [
          126.5,
          293.0
        ],
        [
          128.5,
          288.0
        ],
        [
          137.0,
          279.5
        ],
        [
          140.0,
          278.5
        ],
        [
          142.5,
          276.0
        ],
        [
          142.5,
          275.0
        ],
        [
          145.5,
          272.0
        ],
        [
          145.5,
          270.0
        ],
        [
          147.0,
          268.5
        ],
        [
          151.0,
          266.5
        ],
        [
          153.0,
          266.5
        ],
        [
          164.5,
          257.0
        ],
        [
          164.5,
          255.0
        ],
        [
          165.5,
          254.0
        ],
        [
          165.5,
          251.0
        ],
        [
          166.5,
          249.0
        ],
        [
          173.5,
          242.0
        ],
        [
          175.0,
          238.5
        ],
        [
          177.0,
          238.5
        ],
        [
          180.5,
          236.0
        ],
        [
          180.5,
          232.0
        ],
        [
          177.0,
          228.5
        ],
        [
          171.5,
          226.0
        ],
        [
          170.5,
          224.0
        ],
        [
          170.5,
          221.0
        ],
        [
          169.0,
          219.5
        ],
        [
          166.0,
          219.5
        ],
        [
          164.5,
          218.0
        ],
        [
          163.5,
          216.0
        ],
        [
          163.5,
          214.0
        ],
        [
          160.5,
          210.0
        ],
        [
          156.5,
          202.0
        ],
        [
          157.0,
          200.5
        ],
        [
          159.0,
          200.5
        ],
        [
          161.0,
          199.5
        ],
        [
          166.0,
          204.5
        ],
        [
          168.0,
          204.5
        ],
        [
          170.5,
          207.0
        ],
        [
          170.5,
          211.0
        ],
        [
          173.0,
          213.5
        ],
        [
          176.0,
          213.5
        ],
        [
          177.5,
          212.0
        ],
        [
          177.5,
          210.0
        ],
        [
          178.5,
          209.0
        ],
        [
          178.5,
          205.0
        ],
        [
          177.0,
          203.5
        ],
        [
          174.0,
          203.5
        ],
        [
          171.5,
          201.0
        ],
        [
          171.5,
          192.0
        ],
        [
          173.5,
          190.0
        ],
        [
          174.5,
          185.0
        ],
        [
          171.0,
          184.5
        ],
        [
          170.0,
          185.5
        ],
        [
          168.5,
          184.0
        ],
        [
          168.5,
          180.0
        ],
        [
          167.5,
          179.0
        ],
        [
          167.5,
          177.0
        ],
        [
          166.0,
          174.5
        ],
        [
          165.0,
          174.5
        ],
        [
          162.5,
          177.0
        ],
        [
          162.0,
          178.5
        ],
        [
          160.0,
          178.5
        ],
        [
          157.0,
          182.5
        ],
        [
          156.5,
          182.0
        ],
        [
          156.5,
          179.0
        ],
        [
          157.5,
          178.0
        ],
        [
          157.5,
          176.0
        ],
        [
          158.5,
          175.0
        ],
        [
          159.5,
          170.0
        ],
        [
          163.0,
          167.5
        ],
        [
          165.0,
          167.5
        ],
        [
          166.5,
          165.0
        ],
        [
          166.5,
          160.0
        ],
        [
          165.5,
          159.0
        ],
        [
          165.5,
          149.0
        ],
        [
          164.5,
          148.0
        ],
        [
          165.0,
          144.5
        ],
        [
          166.5,
          145.0
        ],
        [
          166.5,
          152.0
        ],
        [
          168.0,
          153.5
        ],
        [
          169.0,
          153.5
        ],
        [
          170.5,
          155.0
        ],
        [
          170.5,
          156.0
        ],
        [
          174.5,
          160.0
        ],
        [
          175.5,
          162.0
        ],
        [
          175.5,
          164.0
        ],
        [
          176.5,
          165.0
        ],
        [
          176.5,
          167.0
        ],
        [
          180.0,
          169.5
        ],
        [
          181.5,
          169.0
        ],
        [
          181.5,
          163.0
        ],
        [
          180.5,
          162.0
        ],
        [
          180.5,
          160.0
        ],
        [
          178.5,
          156.0
        ],
        [
          178.5,
          149.0
        ],
        [
          174.5,
          145.0
        ],
        [
          171.5,
          139.0
        ],
        [
          171.5,
          137.0
        ],
        [
          169.5,
          133.0
        ],
        [
          169.5,
          130.0
        ],
        [
          165.5,
          122.0
        ],
        [
          166.0,
          120.5
        ],
        [
          171.0,
          120.5
        ],
        [
          172.5,
          119.0
        ],
        [
          172.5,
          113.0
        ],
        [
          174.0,
          112.5
        ],
        [
          175.5,
          116.0
        ],
        [
          177.5,
          117.0
        ],
        [
          177.5,
          119.0
        ],
        [
          178.5,
          120.0
        ],
        [
          178.5,
          122.0
        ],
        [
          180.5,
          126.0
        ],
        [
          180.5,
          129.0
        ],
        [
          179.5,
          130.0
        ],
        [
          179.5,
          136.0
        ],
        [
          180.5,
          138.0
        ],
        [
          182.0,
          139.5
        ],
        [
          183.0,
          139.5
        ],
        [
          187.5,
          144.0
        ],
        [
          187.5,
          151.0
        ],
        [
          190.5,
          155.0
        ],
        [
          190.5,
          159.0
        ],
        [
          189.5,
          160.0
        ],
        [
          189.5,
          167.0
        ],
        [
          190.5,
          168.0
        ],
        [
          190.5,
          171.0
        ],
        [
          191.5,
          172.0
        ],
        [
          191.5,
          175.0
        ],
        [
          192.5,
          176.0
        ],
        [
          192.5,
          179.0
        ],
        [
          193.5,
          180.0
        ],
        [
          193.5,
          186.0
        ],
        [
          200.5,
          193.0
        ],
        [
          200.5,
          196.0
        ],
        [
          199.5,
          198.0
        ],
        [
          197.0,
          200.5
        ],
        [
          195.0,
          200.5
        ],
        [
          194.0,
          201.5
        ],
        [
          192.5,
          200.0
        ],
        [
          192.5,
          198.0
        ],
        [
          190.5,
          196.0
        ],
        [
          190.5,
          195.0
        ],
        [
          189.0,
          194.5
        ],
        [
          187.5,
          196.0
        ],
        [
          187.5,
          202.0
        ],
        [
          191.0,
          206.5
        ],
        [
          194.0,
          206.5
        ],
        [
          195.0,
          207.5
        ],
        [
          197.0,
          207.5
        ],
        [
          199.0,
          209.5
        ],
        [
          209.0,
          209.5
        ],
        [
          213.0,
          212.5
        ],
        [
          219.0,
          212.5
        ],
        [
          220.0,
          211.5
        ],
        [
          222.0,
          211.5
        ],
        [
          223.0,
          210.5
        ],
        [
          227.0,
          210.5
        ],
        [
          228.0,
          209.5
        ],
        [
          234.0,
          209.5
        ],
        [
          235.0,
          210.5
        ],
        [
          239.0,
          210.5
        ],
        [
          240.0,
          211.5
        ],
        [
          243.0,
          211.5
        ],
        [
          244.0,
          212.5
        ],
        [
          248.0,
          212.5
        ],
        [
          249.0,
          211.5
        ],
        [
          260.0,
          211.5
        ],
        [
          263.0,
          209.5
        ],
        [
          265.0,
          209.5
        ],
        [
          266.0,
          208.5
        ],
        [
          270.0,
          208.5
        ],
        [
          271.0,
          207.5
        ],
        [
          283.0,
          207.5
        ],
        [
          284.0,
          206.5
        ],
        [
          289.0,
          206.5
        ],
        [
          293.0,
          202.5
        ],
        [
          297.0,
          200.5
        ],
        [
          301.5,
          196.0
        ],
        [
          301.5,
          195.0
        ],
        [
          303.0,
          193.5
        ],
        [
          304.0,
          193.5
        ],
        [
          309.0,
          189.5
        ],
        [
          313.0,
          191.5
        ],
        [
          315.0,
          190.5
        ],
        [
          319.0,
          190.5
        ],
        [
          322.0,
          192.5
        ],
        [
          326.0,
          192.5
        ],
        [
          326.5,
          191.0
        ],
        [
          329.0,
          188.5
        ],
        [
          333.0,
          188.5
        ],
        [
          334.5,
          187.0
        ],
        [
          336.5,
          183.0
        ],
        [
          336.5,
          181.0
        ],
        [
          338.5,
          177.0
        ],
        [
          337.5,
          176.0
        ],
        [
          337.5,
          173.0
        ],
        [
          330.5,
          167.0
        ],
        [
          330.5,
          159.0
        ],
        [
          331.5,
          158.0
        ],
        [
          331.5,
          151.0
        ],
        [
          334.0,
          148.5
        ],
        [
          335.5,
          148.0
        ],
        [
          336.5,
          146.0
        ],
        [
          336.5,
          140.0
        ],
        [
          340.5,
          137.0
        ],
        [
          340.5,
          131.0
        ],
        [
          341.5,
          130.0
        ],
        [
          340.5,
          129.0
        ],
        [
          340.5,
          124.0
        ],
        [
          341.5,
          123.0
        ],
        [
          341.5,
          121.0
        ],
        [
          339.5,
          117.0
        ],
        [
          341.0,
          114.5
        ],
        [
          342.5,
          115.0
        ],
        [
          343.5,
          117.0
        ],
        [
          343.5,
          120.0
        ],
        [
          342.5,
          121.0
        ],
        [
          345.5,
          123.0
        ],
        [
          345.5,
          126.0
        ],
        [
          346.5,
          127.0
        ],
        [
          346.5,
          131.0
        ],
        [
          347.5,
          132.0
        ],
        [
          347.5,
          140.0
        ],
        [
          346.0,
          141.5
        ],
        [
          344.0,
          141.5
        ],
        [
          341.5,
          143.0
        ],
        [
          341.5,
          148.0
        ],
        [
          342.5,
          149.0
        ],
        [
          340.5,
          152.0
        ],
        [
          340.5,
          158.0
        ],
        [
          342.0,
          159.5
        ],
        [
          348.5,
          153.0
        ],
        [
          350.0,
          149.5
        ],
        [
          353.0,
          149.5
        ],
        [
          354.5,
          148.0
        ],
        [
          356.5,
          143.0
        ],
        [
          359.5,
          139.0
        ],
        [
          359.5,
          137.0
        ],
        [
          360.5,
          136.0
        ],
        [
          360.5,
          123.0
        ],
        [
          359.5,
          122.0
        ],
        [
          359.5,
          117.0
        ],
        [
          360.5,
          116.0
        ],
        [
          360.5,
          114.0
        ],
        [
          361.0,
          113.5
        ],
        [
          362.5,
          116.0
        ],
        [
          362.5,
          123.0
        ],
        [
          363.5,
          124.0
        ],
        [
          363.5,
          127.0
        ],
        [
          365.5,
          129.0
        ],
        [
          365.5,
          132.0
        ],
        [
          364.5,
          133.0
        ],
        [
          364.5,
          135.0
        ],
        [
          365.5,
          137.0
        ],
        [
          364.5,
          138.0
        ],
        [
          364.5,
          143.0
        ],
        [
          363.5,
          144.0
        ],
        [
          363.5,
          152.0
        ],
        [
          362.5,
          153.0
        ],
        [
          362.5,
          156.0
        ],
        [
          361.5,
          157.0
        ],
        [
          361.5,
          167.0
        ],
        [
          359.5,
          170.0
        ],
        [
          359.5,
          182.0
        ],
        [
          361.0,
          183.5
        ],
        [
          363.0,
          183.5
        ],
        [
          364.5,
          185.0
        ],
        [
          363.5,
          187.0
        ],
        [
          363.5,
          190.0
        ],
        [
          361.0,
          192.5
        ],
        [
          359.5,
          193.0
        ],
        [
          359.5,
          195.0
        ],
        [
          362.5,
          200.0
        ],
        [
          361.5,
          207.0
        ],
        [
          364.5,
          213.0
        ],
        [
          369.5,
          218.0
        ],
        [
          370.5,
          220.0
        ],
        [
          370.5,
          226.0
        ],
        [
          372.5,
          228.0
        ],
        [
          375.5,
          234.0
        ],
        [
          374.5,
          236.0
        ],
        [
          374.5,
          241.0
        ],
        [
          375.5,
          242.0
        ],
        [
          375.5,
          246.0
        ],
        [
          376.5,
          247.0
        ],
        [
          376.5,
          251.0
        ],
        [
          377.5,
          253.0
        ],
        [
          382.0,
          256.5
        ],
        [
          384.0,
          256.5
        ],
        [
          386.5,
          259.0
        ],
        [
          387.5,
          262.0
        ],
        [
          389.0,
          263.5
        ],
        [
          394.0,
          263.5
        ],
        [
          396.0,
          261.5
        ],
        [
          398.0,
          261.5
        ],
        [
          400.0,
          263.5
        ],
        [
          404.0,
          265.5
        ],
        [
          405.5,
          268.0
        ],
        [
          406.5,
          273.0
        ],
        [
          407.5,
          274.0
        ],
        [
          407.5,
          279.0
        ],
        [
          406.5,
          280.0
        ],
        [
          406.5,
          283.0
        ],
        [
          406.0,
          283.5
        ],
        [
          401.0,
          283.5
        ],
        [
          397.5,
          290.0
        ],
        [
          397.5,
          292.0
        ],
        [
          396.5,
          293.0
        ],
        [
          396.5,
          296.0
        ],
        [
          399.5,
          301.0
        ],
        [
          399.5,
          304.0
        ],
        [
          400.5,
          305.0
        ],
        [
          400.5,
          309.0
        ],
        [
          403.5,
          314.0
        ],
        [
          403.5,
          319.0
        ],
        [
          402.5,
          320.0
        ],
        [
          402.5,
          323.0
        ],
        [
          400.0,
          323.5
        ],
        [
          398.0,
          321.5
        ],
        [
          397.0,
          321.5
        ],
        [
          395.0,
          323.5
        ],
        [
          394.0,
          323.5
        ],
        [
          392.5,
          326.0
        ],
        [
          392.5,
          338.0
        ],
        [
          393.5,
          339.0
        ],
        [
          393.5,
          341.0
        ],
        [
          394.5,
          342.0
        ],
        [
          394.5,
          346.0
        ],
        [
          395.5,
          347.0
        ],
        [
          395.5,
          355.0
        ],
        [
          397.5,
          357.0
        ],
        [
          397.5,
          360.0
        ],
        [
          398.5,
          361.0
        ],
        [
          398.5,
          362.0
        ],
        [
          397.0,
          363.5
        ],
        [
          395.5,
          359.0
        ],
        [
          394.0,
          358.5
        ],
        [
          392.5,
          356.0
        ],
        [
          392.5,
          352.0
        ],
        [
          389.5,
          349.0
        ],
        [
          388.5,
          347.0
        ],
        [
          388.5,
          345.0
        ],
        [
          387.5,
          344.0
        ],
        [
          387.5,
          342.0
        ],
        [
          385.5,
          338.0
        ],
        [
          378.5,
          331.0
        ],
        [
          378.5,
          324.0
        ],
        [
          377.5,
          323.0
        ],
        [
          377.5,
          321.0
        ],
        [
          375.5,
          319.0
        ],
        [
          372.5,
          313.0
        ],
        [
          369.0,
          309.5
        ],
        [
          367.5,
          312.0
        ],
        [
          367.5,
          322.0
        ],
        [
          366.5,
          323.0
        ],
        [
          366.5,
          325.0
        ],
        [
          365.5,
          327.0
        ],
        [
          364.0,
          327.5
        ],
        [
          361.5,
          331.0
        ],
        [
          361.5,
          339.0
        ],
        [
          362.5,
          340.0
        ],
        [
          362.5,
          343.0
        ],
        [
          364.5,
          347.0
        ],
        [
          364.5,
          351.0
        ],
        [
          361.0,
          355.5
        ],
        [
          360.5,
          352.0
        ],
        [
          359.5,
          351.0
        ],
        [
          359.5,
          346.0
        ],
        [
          357.0,
          343.5
        ],
        [
          355.5,
          346.0
        ],
        [
          355.5,
          351.0
        ],
        [
          354.5,
          353.0
        ],
        [
          353.0,
          354.5
        ],
        [
          351.5,
          353.0
        ],
        [
          351.5,
          349.0
        ],
        [
          352.5,
          348.0
        ],
        [
          352.5,
          344.0
        ],
        [
          353.5,
          343.0
        ],
        [
          353.5,
          340.0
        ],
        [
          354.5,
          339.0
        ],
        [
          354.5,
          335.0
        ],
        [
          357.0,
          332.5
        ],
        [
          360.5,
          332.0
        ],
        [
          360.5,
          324.0
        ],
        [
          359.5,
          323.0
        ],
        [
          359.5,
          296.0
        ],
        [
          362.5,
          294.0
        ],
        [
          362.5,
          286.0
        ],
        [
          358.5,
          278.0
        ],
        [
          358.5,
          273.0
        ],
        [
          361.5,
          270.0
        ],
        [
          361.5,
          265.0
        ],
        [
          358.0,
          260.5
        ],
        [
          355.0,
          260.5
        ],
        [
          354.0,
          261.5
        ],
        [
          351.5,
          259.0
        ],
        [
          350.5,
          257.0
        ],
        [
          350.5,
          253.0
        ],
        [
          349.5,
          252.0
        ],
        [
          349.5,
          250.0
        ],
        [
          346.5,
          244.0
        ],
        [
          346.5,
          241.0
        ],
        [
          345.5,
          239.0
        ],
        [
          340.5,
          235.0
        ],
        [
          340.5,
          234.0
        ],
        [
          338.5,
          232.0
        ],
        [
          338.0,
          230.5
        ],
        [
          336.0,
          231.5
        ],
        [
          334.0,
          231.5
        ],
        [
          331.5,
          234.0
        ],
        [
          331.5,
          236.0
        ],
        [
          330.5,
          237.0
        ],
        [
          330.5,
          241.0
        ],
        [
          331.5,
          242.0
        ],
        [
          331.5,
          244.0
        ],
        [
          335.5,
          250.0
        ],
        [
          335.5,
          255.0
        ],
        [
          336.5,
          256.0
        ],
        [
          336.5,
          261.0
        ],
        [
          337.5,
          262.0
        ],
        [
          337.5,
          273.0
        ],
        [
          333.5,
          281.0
        ],
        [
          333.5,
          288.0
        ],
        [
          332.5,
          289.0
        ],
        [
          332.5,
          291.0
        ],
        [
          330.0,
          295.5
        ],
        [
          327.0,
          295.5
        ],
        [
          326.0,
          294.5
        ],
        [
          316.0,
          294.5
        ],
        [
          312.0,
          297.5
        ],
        [
          309.0,
          297.5
        ],
        [
          306.5,
          295.0
        ],
        [
          306.5,
          294.0
        ],
        [
          304.0,
          292.5
        ],
        [
          299.0,
          292.5
        ],
        [
          297.0,
          293.5
        ],
        [
          291.0,
          287.5
        ],
        [
          289.0,
          286.5
        ],
        [
          287.0,
          286.5
        ],
        [
          284.5,
          284.0
        ],
        [
          283.5,
          281.0
        ],
        [
          281.5,
          279.0
        ],
        [
          280.5,
          276.0
        ],
        [
          278.5,
          274.0
        ],
        [
          276.5,
          270.0
        ],
        [
          276.5,
          267.0
        ],
        [
          275.5,
          266.0
        ],
        [
          275.5,
          264.0
        ],
        [
          274.5,
          262.0
        ],
        [
          273.0,
          260.5
        ],
        [
          271.0,
          259.5
        ],
        [
          269.0,
          259.5
        ],
        [
          266.0,
          257.5
        ],
        [
          258.0,
          257.5
        ],
        [
          257.0,
          258.5
        ],
        [
          254.0,
          258.5
        ],
        [
          250.0,
          261.5
        ],
        [
          248.0,
          261.5
        ],
        [
          247.0,
          260.5
        ],
        [
          243.0,
          260.5
        ],
        [
          242.0,
          261.5
        ],
        [
          236.0,
          261.5
        ],
        [
          235.0,
          262.5
        ],
        [
          230.0,
          262.5
        ],
        [
          229.0,
          261.5
        ],
        [
          223.0,
          261.5
        ],
        [
          221.0,
          260.5
        ],
        [
          217.0,
          262.5
        ],
        [
          216.0,
          261.5
        ],
        [
          213.0,
          261.5
        ],
        [
          208.0,
          264.5
        ],
        [
          202.0,
          264.5
        ],
        [
          201.0,
          263.5
        ],
        [
          200.0,
          264.5
        ],
        [
          193.0,
          264.5
        ],
        [
          191.0,
          265.5
        ],
        [
          185.0,
          271.5
        ],
        [
          182.0,
          272.5
        ],
        [
          179.5,
          275.0
        ],
        [
          177.5,
          279.0
        ],
        [
          177.5,
          292.0
        ],
        [
          178.5,
          293.0
        ],
        [
          177.5,
          295.0
        ],
        [
          177.5,
          300.0
        ],
        [
          179.5,
          304.0
        ],
        [
          181.5,
          305.0
        ],
        [
          181.5,
          307.0
        ],
        [
          180.5,
          309.0
        ],
        [
          176.5,
          312.0
        ],
        [
          175.5,
          315.0
        ],
        [
          173.5,
          317.0
        ],
        [
          173.0,
          318.5
        ],
        [
          165.5,
          321.0
        ],
        [
          164.5,
          323.0
        ],
        [
          164.5,
          326.0
        ],
        [
          163.5,
          327.0
        ],
        [
          163.5,
          336.0
        ],
        [
          162.5,
          337.0
        ],
        [
          163.5,
          338.0
        ],
        [
          163.5,
          344.0
        ],
        [
          164.5,
          345.0
        ],
        [
          164.5,
          349.0
        ],
        [
          163.5,
          350.0
        ],
        [
          163.5,
          356.0
        ],
        [
          164.5,
          357.0
        ],
        [
          164.5,
          361.0
        ],
        [
          165.5,
          362.0
        ],
        [
          165.5,
          366.0
        ],
        [
          166.5,
          367.0
        ],
        [
          166.5,
          369.0
        ],
        [
          162.5,
          376.0
        ],
        [
          162.5,
          382.0
        ],
        [
          161.5,
          383.0
        ],
        [
          161.5,
          390.0
        ],
        [
          162.5,
          391.0
        ],
        [
          162.5,
          394.0
        ],
        [
          163.5,
          395.0
        ],
        [
          163.5,
          399.0
        ],
        [
          164.5,
          400.0
        ],
        [
          164.5,
          402.0
        ],
        [
          163.5,
          403.0
        ],
        [
          163.5,
          409.0
        ],
        [
          162.5,
          410.0
        ],
        [
          162.0,
          412.5
        ],
        [
          160.5,
          411.0
        ],
        [
          160.5,
          399.0
        ],
        [
          159.5,
          398.0
        ],
        [
          159.5,
          395.0
        ],
        [
          158.0,
          394.5
        ],
        [
          154.5,
          390.0
        ],
        [
          154.5,
          374.0
        ],
        [
          153.5,
          373.0
        ],
        [
          153.5,
          371.0
        ],
        [
          152.0,
          369.5
        ],
        [
          149.5,
          369.0
        ],
        [
          149.5,
          364.0
        ],
        [
          150.5,
          363.0
        ],
        [
          150.5,
          358.0
        ],
        [
          151.5,
          357.0
        ],
        [
          151.5,
          350.0
        ],
        [
          150.5,
          349.0
        ],
        [
          150.5,
          347.0
        ],
        [
          149.0,
          345.5
        ],
        [
          146.5,
          348.0
        ],
        [
          146.5,
          350.0
        ],
        [
          145.0,
          351.5
        ],
        [
          144.0,
          351.5
        ],
        [
          135.5,
          360.0
        ],
        [
          134.5,
          362.0
        ],
        [
          134.5,
          366.0
        ],
        [
          133.5,
          367.0
        ],
        [
          133.0,
          369.5
        ],
        [
          130.5,
          366.0
        ],
        [
          131.5,
          364.0
        ],
        [
          131.5,
          359.0
        ],
        [
          132.5,
          358.0
        ],
        [
          132.5,
          355.0
        ],
        [
          135.5,
          352.0
        ],
        [
          136.5,
          349.0
        ],
        [
          142.0,
          343.5
        ],
        [
          143.0,
          344.5
        ],
        [
          148.0,
          344.5
        ],
        [
          148.5,
          342.0
        ],
        [
          149.5,
          341.0
        ],
        [
          149.5,
          338.0
        ],
        [
          150.5,
          337.0
        ],
        [
          150.5,
          331.0
        ],
        [
          149.5,
          329.0
        ],
        [
          147.0,
          327.5
        ],
        [
          145.0,
          327.5
        ],
        [
          143.0,
          328.5
        ],
        [
          138.5,
          333.0
        ],
        [
          138.5,
          335.0
        ],
        [
          137.0,
          336.5
        ],
        [
          134.0,
          337.5
        ],
        [
          132.5,
          336.0
        ],
        [
          132.5,
          329.0
        ],
        [
          139.5,
          321.0
        ],
        [
          142.5,
          315.0
        ],
        [
          142.5,
          307.0
        ],
        [
          143.5,
          305.0
        ],
        [
          142.5,
          304.0
        ],
        [
          142.0,
          301.5
        ],
        [
          136.0,
          306.5
        ],
        [
          130.0,
          309.5
        ],
        [
          125.0,
          314.5
        ],
        [
          124.0,
          314.5
        ],
        [
          119.0,
          319.5
        ],
        [
          117.5,
          320.0
        ],
        [
          114.5,
          326.0
        ],
        [
          114.5,
          328.0
        ],
        [
          112.0,
          330.5
        ],
        [
          108.0,
          330.5
        ],
        [
          106.5,
          334.0
        ],
        [
          102.5,
          339.0
        ],
        [
          98.5,
          347.0
        ],
        [
          97.0,
          348.5
        ],
        [
          95.0,
          348.5
        ],
        [
          92.5,
          350.0
        ],
        [
          91.5,
          352.0
        ],
        [
          91.5,
          354.0
        ],
        [
          90.5,
          355.0
        ],
        [
          90.5,
          358.0
        ],
        [
          89.0,
          359.5
        ]
      ],
      "centroid": [
        262.57624485683095,
        251.14232933075826
      ],
      "pixel_area": 23818
    },
    {
      "id": "inferior_vena_cava",
      "channel": 132,
      "name": "inferior vena cava",
      "color": "#8faacb",
      "mask": "mask-inferior_vena_cava.png",
      "contour": [
        [
          196.5,
          511.0
        ],
        [
          196.5,
          495.0
        ],
        [
          197.5,
          494.0
        ],
        [
          197.5,
          491.0
        ],
        [
          198.5,
          490.0
        ],
        [
          198.5,
          488.0
        ],
        [
          200.5,
          484.0
        ],
        [
          200.5,
          480.0
        ],
        [
          201.5,
          479.0
        ],
        [
          201.5,
          464.0
        ],
        [
          200.5,
          463.0
        ],
        [
          200.5,
          460.0
        ],
        [
          199.5,
          459.0
        ],
        [
          199.5,
          457.0
        ],
        [
          197.5,
          453.0
        ],
        [
          197.5,
          435.0
        ],
        [
          198.5,
          434.0
        ],
        [
          198.5,
          425.0
        ],
        [
          199.5,
          424.0
        ],
        [
          199.5,
          400.0
        ],
        [
          198.5,
          399.0
        ],
        [
          198.5,
          397.0
        ],
        [
          199.5,
          396.0
        ],
        [
          199.5,
          393.0
        ],
        [
          200.5,
          392.0
        ],
        [
          200.5,
          381.0
        ],
        [
          201.5,
          380.0
        ],
        [
          201.5,
          366.0
        ],
        [
          203.5,
          362.0
        ],
        [
          206.0,
          359.5
        ],
        [
          214.0,
          355.5
        ],
        [
          216.0,
          353.5
        ],
        [
          224.0,
          349.5
        ],
        [
          232.0,
          349.5
        ],
        [
          236.0,
          351.5
        ],
        [
          245.5,
          361.0
        ],
        [
          247.5,
          365.0
        ],
        [
          247.5,
          369.0
        ],
        [
          248.5,
          370.0
        ],
        [
          248.5,
          373.0
        ],
        [
          249.5,
          374.0
        ],
        [
          249.5,
          377.0
        ],
        [
          250.5,
          378.0
        ],
        [
          250.5,
          395.0
        ],
        [
          249.5,
          396.0
        ],
        [
          249.5,
          404.0
        ],
        [
          248.5,
          405.0
        ],
        [
          248.5,
          410.0
        ],
        [
          249.5,
          411.0
        ],
        [
          249.5,
          414.0
        ],
        [
          250.5,
          415.0
        ],
        [
          250.5,
          428.0
        ],
        [
          249.5,
          429.0
        ],
        [
          249.5,
          431.0
        ],
        [
          243.5,
          438.0
        ],
        [
          239.5,
          446.0
        ],
        [
          239.5,
          448.0
        ],
        [
          238.5,
          449.0
        ],
        [
          238.5,
          451.0
        ],
        [
          236.5,
          455.0
        ],
        [
          236.5,
          460.0
        ],
        [
          235.5,
          461.0
        ],
        [
          235.5,
          481.0
        ],
        [
          234.5,
          482.0
        ],
        [
          234.5,
          486.0
        ],
        [
          233.5,
          487.0
        ],
        [
          233.5,
          490.0
        ],
        [
          232.5,
          491.0
        ],
        [
          232.5,
          497.0
        ],
        [
          231.5,
          498.0
        ],
        [
          231.5,
          511.0
        ]
      ],
      "centroid": [
        221.71919728493432,
        427.27770399881956
      ],
      "pixel_area": 6777
    }
  ],
  "features": [
    {
      "id": "anterior",
      "landmarks": [
        "RA1",
        "RA2",
        "LV2",
        "LA1"
      ],
      "polygon": [
        [
          224,
          274
        ],
        [
          239,
          406
        ],
        [
          389,
          435
        ],
        [
          265,
          253
        ]
      ],
      "area": 14715.5,
      "perimeter": 551.9194793701172
    },
    {
      "id": "inferior",
      "landmarks": [
        "RV3",
        "RA2",
        "LV2",
        "LV4"
      ],
      "polygon": [
        [
          229,
          385
        ],
        [
          239,
          406
        ],
        [
          389,
          435
        ],
        [
          418,
          400
        ]
      ],
      "area": 4955.0,
      "perimeter": 411.08459854125977
    },
    {
      "id": "left",
      "landmarks": [
        "LV1",
        "LV2",
        "LV4",
        "RV1"
      ],
      "polygon": [
        [
          312,
          303
        ],
        [
          389,
          435
        ],
        [
          418,
          400
        ],
        [
          299,
          276
        ]
      ],
      "area": 4062.0,
      "perimeter": 400.10011291503906
    },
    {
      "id": "right",
      "landmarks": [
        "RA1",
        "RA3",
        "RA2"
      ],
      "polygon": [
        [
          224,
          274
        ],
        [
          185,
          329
        ],
        [
          239,
          406
        ]
      ],
      "area": 2986.5,
      "perimeter": 294.32142639160156
    },
    {
      "id": "upper",
      "landmarks": [
        "RA1",
        "LV1",
        "RV1",
        "LA1"
      ],
      "polygon": [
        [
          224,
          274
        ],
        [
          312,
          303
        ],
        [
          299,
          276
        ],
        [
          265,
          253
        ]
      ],
      "area": 1828.0,
      "perimeter": 209.73584365844727
    }
  ],
  "vessel_features": [
    {
      "id": "aorta",
      "overlap_pixels": 11003,
      "outside_pixels": 12426,
      "overlap_to_heart": 0.2847788389367705
    },
    {
      "id": "ascending_aorta",
      "overlap_pixels": 4247,
      "outside_pixels": 3287,
      "overlap_to_heart": 0.1099205424851826
    },
    {
      "id": "descending_aorta",
      "overlap_pixels": 8226,
      "outside_pixels": 5765,
      "overlap_to_heart": 0.21290472862799906
    },
    {
      "id": "aortic_arch",
      "overlap_pixels": 0,
      "outside_pixels": 4010,
      "overlap_to_heart": 0.0
    },
    {
      "id": "pulmonary_artery",
      "overlap_pixels": 4467,
      "outside_pixels": 19351,
      "overlap_to_heart": 0.11561456634831897
    },
    {
      "id": "inferior_vena_cava",
      "overlap_pixels": 2978,
      "outside_pixels": 3799,
      "overlap_to_heart": 0.07707637756554597
    },
    {
      "id": "ascending_aorta_above_heart",
      "pixels": 3286
    },
    {
      "id": "descending_aorta_above_heart",
      "pixels": 2608
    },
    {
      "id": "aortic_arch_above_heart",
      "pixels": 3959
    }
  ],
  "landmark_chamber": {
    "LA1": "LA",
    "LA2": "LA",
    "LA3": "LA",
    "LA4": "LA",
    "RA1": "RA",
    "RA2": "RA",
    "RA3": "RA",
    "RA4": "RA",
    "LV1": "LV",
    "LV2": "LV",
    "LV3": "LV",
    "LV4": "LV",
    "RV1": "RV",
    "RV2": "RV",
    "RV3": "RV",
    "RV4": "RV"
  },
  "provenance": {
    "image_sha256": "8805952bbed3a6be6e3dae3a275b29344c8141922c9a5c0ffea07c775cac0e31",
    "source_mask_sha256": "2713ec14256b6744c25713b6b72865c2dc5c8e2fa893b7dbdd7a998f8021611f",
    "source_mask_shape": [
      159,
      512,
      512
    ],
    "method_sha256": {
      "401_heart_graph_clean.ipynb": "966040f5acaad892c597dfebf079465525c7c464cb5af10084b50eafecb91801",
      "501_heartVesselFeatures_clean.ipynb": "b79d927675334881b8efd6aea8e46fe5feb616f738310cd976b24b72d58f68a1",
      "601_orientation_finder copy.ipynb": "791b8afbf99166f5c5a040c98cc2433179e779ac2ef74b006a07eea48debb31b",
      "601_orientation_finder.ipynb": "57fff1e705baf762608c58df50b5b2fa1917fd8dd084c13b9813be8adce60584",
      "cardiac_phenotype.py": "235c530e83050164e8f0b65f841bd4967f59cab2a3ba98abd4e4aee77a1e9dc8",
      "border.py": "09acce8c80fe8c61d4639061a825c65f6f45684953c98574280a3f36ed6f4243",
      "shape.py": "99d5d6504471a0adab88a3626de80220f85b27ec4d202d8a01abc1dc8e313ea5"
    },
    "contour_simplification_max_error_pixels": 0.45,
    "notes": [
      "Largest connected component retained per channel, matching the archived graph workflow.",
      "Landmark extrema and feature area/perimeter use extracted original function definitions, including numpy tie-breaking.",
      "No automatic rotation is applied: image and all masks already share a 512x512 frame.",
      "Channel 132 uses the CXAS class-map name inferior vena cava; the vessel notebook calls that channel pulmonary vein.",
      "This single figure sample uses saved native-frame segmentations; group analyses in the archive use registered outputs.",
      "All 3D depth or layer separation in the viewer is assumed; features remain 2D pixel measurements."
    ]
  }
}