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Table 4 Summary of quantitative measures derived across the 20 sample trial patient datasets

From: Automatic segmentation of male pelvic anatomy on computed tomography images: a comparison with multiple observers in the context of a multicentre clinical trial

 

CTV

BLADDER

RECTUM

N

20

14

20

ViPlan (cm3)

42.9 (14.0)

132.9 (79.7)

83.3 (24.7)

VObs (cm3)

77.6 (35.3)

121.2 (51.1)

120.1 (71.8)

Δ V iPlan Obs (%)a

91.4 (87.4)b

2.4 (26.5)

48.8 (86.3)c

VObsiPlan (cm3)

31.6 (12.52)

97.9 (48.9)

60.0 (19.6)

DSC Obs iPlan

0.53 (0.16)

0.77 (0.06)

0.62 (0.14)

I Obs ObsiPlan

0.46 (0.22)

0.77 (0.10)

0.74 (0.17)

zSup,Obs − zSup,iPlan (cm)

0.3 (1.2)

0.75 (0.89)

0.19 (1.87)

zInf,Obs − zInf,iPlan (cm)

−1.2 (1.0)

0.32 (1.13)

1.99 (1.02)

  1. a Relative to user-defined volume.
  2. b Viplan and VObs values significantly different on a 2-tailed paired t-test at p=0.002.
  3. c Viplan and VObs values significantly different on a 2-tailed paired t-test at p=0.03.