Case 5

Patient History

The patient is a 27 month old boy. The scan was performed initially to evaluate the patient for vascular rings. The scan revealed a stenotic trachea and left main bronchus.

Orientation Slices

MPEG Movies

Original CT

This is an electron beam computed tomography with 48 slices taken at 3mm intervals with 1.5mm overlap.

Surface Render Images

This movie shows the aorta and its branching arteries (red), the pulmonary artery (purple), the superior caval vein (blue), the esophagus (green) and the trachea and the bronchial tree (yellow). The movie rotates around the y axis in ten degree increments.

This movie shows the aorta and its branching arteries (red), the esophagus (green) and the trachea and the bronchial tree (yellow). The movie rotates around the y axis in ten degree increments.

This movie shows the trachea and the bronchial tree (yellow). The movie rotates around the y axis in ten degree increments.

Measurements of the Tracheobronchial Tree

The trachea

The trachea measures 5.384 mm x 4.102mm at the constriction.

Tube Geometry Analysis Summary
Date            : Tue Jun  8 16:14:08 1999
Oblique slices  : 31
Segmented image : 2dairseg_int
Note            : Trachea only
 
Slice Area [mm^2] AP [mm] Lat [mm]               Position   Major   Minor  Orthogonal
    1      22.711   5.742    5.332  (280.54,233.74,  4.66)   5.757   3.869       5.348 
    2      24.057   6.152    4.922  (279.08,234.52,  8.75)   6.367   4.183       5.073 
    3      27.926   6.152    6.152  (277.32,234.90, 13.02)   6.207   4.939       5.800 
    4      27.926   5.742    6.973  (278.00,233.22, 17.29)   6.985   4.586       4.939 
    5      27.421   5.742    6.152  (279.39,231.30, 21.36)   6.274   4.939       5.472 
    6      26.244   5.742    5.742  (279.64,230.02, 25.90)   5.873   4.676       4.956 
    7      21.701   5.332    4.922  (277.11,229.87, 29.81)   5.348   4.102       4.102 
    8      26.916   5.742    5.742  (274.33,229.65, 33.56)   6.097   4.676       4.939 
    9      27.253   6.973    4.922  (271.03,229.72, 36.68)   6.677   4.122       4.183 
   10      35.496   7.383    6.152  (268.54,230.31, 40.43)   7.485   5.579       6.207 
   11      50.637   7.793    8.613  (266.31,231.97, 44.11)   8.564   6.973       7.394 
   12      64.095   8.613    9.434  (263.80,234.98, 46.52)   9.575   7.563       8.295 
   13      65.609   8.613    9.434  (262.69,237.08, 50.25)   9.861   7.836       8.172 
   14      56.525   7.793    8.203  (262.36,238.61, 54.39)   8.701   7.529       8.121 
   15      56.020   8.203    8.203  (262.03,240.30, 58.45)   8.652   7.541       7.739 
   16      55.683   8.203    8.203  (261.30,241.35, 62.67)   8.835   7.337       7.541 
   17      53.665   8.203    7.793  (260.93,241.99, 66.90)   8.366   7.563       7.890 
   18      47.609   6.973    7.793  (260.18,243.09, 70.99)   7.964   6.764       7.394 
   19      43.571   7.383    7.383  (260.94,244.36, 75.10)   7.563   6.614       6.985 
   20      40.879   6.973    6.973  (261.43,243.95, 79.43)   7.268   6.097       7.268 
   21      36.842   6.562    6.562  (261.92,244.07, 83.81)   6.826   6.056       6.614 
   22      33.646   6.562    6.152  (262.20,245.64, 87.91)   6.985   5.395       5.829 
   23      27.758   5.742    5.332  (262.97,244.58, 92.06)   6.247   4.783       5.503 
   24      26.916   5.332    5.332  (264.05,243.72, 96.18)   6.056   4.676       5.698 
   25      25.234   5.332    5.332  (263.44,245.28,100.22)   6.056   4.676       5.139 
   26      28.599   5.332    6.152  (262.12,245.94,104.34)   6.274   5.007       5.579 
   27      31.795   5.742    6.973  (261.03,244.86,108.52)   7.163   4.586       5.073 
   28      22.711   4.102    6.973  (260.42,245.74,112.84)   7.163   2.900       3.307 
   29      19.178   4.102    6.973  (258.87,247.63,116.52)   7.009   2.051       2.751 
   30      24.057   3.281    9.023  (257.59,248.15,120.72)   8.854   2.091       2.091 
   31      15.141   3.691    5.742  (247.65,247.31,121.72)   5.873   2.958       3.781

The Left Main Bronchus

The left main bronchus is 0.917mm x 0.580mm at the constriction.

Tube Geometry Analysis Summary
Date            : Tue Jun  8 16:27:43 1999
Oblique slices  : 15
Segmented image : 2dairseg_int
Note            : Left main bronchus
 
Slice Area [mm^2] AP [mm] Lat [mm]               Position   Major   Minor  Orthogonal
    5       0.841   0.410    0.820  (274.25,258.94,144.36)   0.917   0.410       0.580 
    6       2.860   1.641    2.461  (272.65,262.16,149.52)   0.000   0.000       0.000 
    7       5.888   2.871    2.871  (276.46,263.29,153.53)   4.060   0.580       0.917 
    8       9.925   3.281    4.512  (279.82,265.72,157.36)   4.676   1.691       1.691 
    9      10.094   3.281    4.102  (283.22,268.96,160.18)   4.060   2.495       2.626 
   10      12.112   3.281    4.102  (287.32,271.66,162.61)   4.183   2.900       2.986 
   11      10.767   3.281    3.691  (291.54,273.67,165.57)   4.102   2.209       3.307 
   12       9.589   3.691    3.281  (296.62,274.58,167.53)   4.223   2.626       2.751 
   13      10.935   3.281    4.102  (301.14,276.04,170.63)   4.437   2.209       2.626 
   14       9.589   2.871    4.102  (306.64,275.93,172.03)   4.586   2.320       2.392 
   15       6.224   2.051    3.691  (313.29,276.46,172.66)   3.382   1.297       1.297

Last modified: Thu Jun 10 11:38:28 CDT