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Table 1 Optimal thresholds (in HU) identified by the software for airway segmentation of human cases

From: Optimizing parameters of an open-source airway segmentation algorithm using different CT images

 

Trachea

Right lung

Left lung

CUH 1

−800

−800

−824

CUH 2

−930

−1,000

−1,024

CUH 3

−800

−1,096

−1,000

CUH 4

−800

−995

−976

Case 21

−800

−840

−820

Case 22a

−800

−1,008

−1000

Case 23

−820

−1,003

−996

Case 24

−820

−980

−974

Case 25a

−800

−955

−972

Case 26

−860

−925

−846

Case 27a

−800

−800

−800

Case 28

−800

−866

−835

Case 29a

−800

−912

−930

Case 30

−800

−825

−820

Case 31

−800

−958

−1,000

Case 32

−800

−997

−1,000

Case 33

−800

−953

−940

Case 34

−800

−1,000

−980

Case 35

−800

−918

−907

Case 36

−800

−851

−825

Case 37

−800

−889

−894

Case 38a

−800

−800

−800

Case 39

−800

−950

−959

Case 40

−800

−1,009

−1,005

  1. Thresholds are chosen independently for trachea, right and left lungs.
  2. aScan was acquired from the same subject as the previous ones.