by Janice Cook-Granroth1, Dr. Ferguson2, and Dr. McLennan2 .

1Department of Radiology, University of Iowa, Iowa City, IA 52242
2Department of Internal, Medicine University of Iowa, Iowa City, IA 52242

Please note: this information is derived from research protocols and is not FDA approved.





Table of Contents:

Patient History
Original CT Scan
Surface Rendered Movies
Bronchoscopic Movies
Measurements

Patient History

This is a female patient.



MPEG Movies of the Tracheal Stenosis


Select here for gray scale images.

Original CT scan

The original trans axial section data set has 442 slices. .

Surface rendered Movies

This movie displays the segmented airway from the 2004 scan.

This movie displays the segmented airway and trachea tube from the 2004 scan.

Bronchoscopy

Measurements

Please note that the pixel value is equal to 0.604, so when calculating the distance first subtract the Z values from the position column and then multiple by 0.604 for the distance.

Right Main Bronchus and Right Intermediate Bronchus Measurements 

  Tube Geometry Analysis Summary
Date            : Mon Nov  8 18:11:51 2004
Oblique slices  : 7
Segmented image : rmb_int
Original image  : rmb_int

Slice Area [mm^2] AP [mm] Lat [mm]               Position   Major   Minor  Orthogonal
    1      37.880   6.639    9.053  (233.64,298.12,149.02)   8.052   4.828       4.866 
    2      36.787   4.225   10.863  (226.76,297.67,153.21)  10.880   3.621       3.817 
    3      33.145   5.432    9.053  (220.59,298.31,157.82)   9.212   3.250       3.864 
    4      24.768   4.828    8.449  (215.18,299.35,163.24)   8.787   3.077       3.250 
    5      17.847   4.225    7.242  (208.90,301.48,167.80)   8.097   2.176       2.176 
    6       8.013   3.621    4.225  (206.04,303.03,175.16)   5.192   0.853       0.853 
    7       5.828   1.811    4.225  (201.02,304.48,181.16)   4.394   1.350       1.350


The distance from the right main bronchus through the right intermediate bronchus is 50.257 mm.

Left Main Bronchus and Left Inferior Bronchus Measurements
top half

 Tube Geometry Analysis Summary
Date            : Mon Nov  8 19:44:55 2004
Oblique slices  : 15
Segmented image : lmb_int
Original image  : lmb_int
Note            : top section 

Slice Area [mm^2] AP [mm] Lat [mm]               Position   Major   Minor  Orthogonal
    1       7.285   4.225    3.018  (242.62,295.23,145.34)   0.000   0.000       0.000 
    2      57.549   7.242    9.656  (249.22,299.69,148.13)   9.825   6.881       7.342 
    3      57.549   7.846    9.656  (253.83,301.39,153.12)  10.796   5.564       6.500 
    4      36.787   6.639    7.846  (257.39,303.11,158.92)   8.704   3.817       4.049 
    5      27.317   6.035    7.242  (262.11,305.50,163.47)   8.704   3.018       3.018 
    6       9.834   4.225    3.018  (265.90,308.71,168.36)   4.596   1.908       2.176 
    7       2.185   1.207    0.604  (269.28,312.71,173.05)   1.350   0.604       0.853 
    8       4.007   1.811    2.414  (273.50,314.71,178.31)   3.018   1.207       1.350 
    9       2.914   1.811    1.811  (276.18,316.02,184.94)   0.000   0.000       0.000 
   10       1.093   0.604    0.604  (278.86,317.08,191.62)   0.000   0.000       0.000 
   11      11.291   4.225    3.621  (284.45,320.50,195.29)   4.352   2.176       2.176 
   12      13.477   3.018    3.621  (288.21,321.92,201.64)   4.352   3.077       3.519 
   13      17.483   4.225    4.828  (293.90,325.86,204.42)   5.398   3.018       3.018 
   14      21.490   4.828    4.828  (297.60,329.00,210.08)   5.564   3.817       4.714 
   15      32.052   6.035    7.242  (302.66,333.35,213.65)   8.119   4.394       3.864
Please note that the pixel value is equal to 0.604, so when calculating the distance first subtract the Z values from the position column and then multiple by 0.604 for the distance.
Example
213.65-145.34 = 68.31 (distance before the correction)
68.31 * .604 = 41.26 (the true distance)

Select here for a complete picture of each slice (1-15) listed in the above measurements.

Left Main Bronchus and Left Inferior Bronchus Measurements
Lower half

 
Tube Geometry Analysis Summary
Date            : Mon Nov  8 19:49:03 2004
Oblique slices  : 7
Segmented image : lmb_int
Original image  : lmb_int
Note            : lower section

Slice Area [mm^2] AP [mm] Lat [mm]               Position   Major   Minor  Orthogonal
    1       9.470   2.414    3.018  (311.76,346.68,244.36)   3.519   2.488       2.560 
    2      19.304   4.225    4.828  (312.61,349.98,252.19)   5.156   3.864       4.394 
    3      24.403   4.225    5.432  (313.54,354.06,260.19)   6.035   4.049       4.714 
    4      19.304   4.225    4.225  (309.82,353.98,268.41)   4.866   4.049       4.049 
    5      25.496   6.035    4.225  (309.55,356.46,276.67)   6.214   4.049       4.049 
    6      24.403   5.432    4.225  (309.72,356.31,285.29)   5.725   4.225       4.596 
    7      29.503   6.035    5.432  (311.01,356.16,294.30)   6.748   4.596       4.866





©1994-2004 Division of Physiologic Imaging, Dept. of Radiology, Univ. of Iowa


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Last modified: Thurs Feb 19 12:30:25 CDT 2003