Table 1 Summary of the quantitative evaluation. Dice similarity coefficient (DSC), 95th percentile of the Hausdorff distance (HD₉₅), and mean surface distance (MSD) were computed as the mean value over the test dataset (\({\text{n}} = 15\))

Structure

DSC \(\left( {\overline{x} \pm sd} \right)\)

HD₉₅ [mm]\(\left( {\overline{x} \pm sd} \right)\)

MSD [mm] \(\left( {\overline{x} \pm sd} \right)\)

TBM

0.97 ± 0.00

2.16 ± 0.76

0.18 ± 0.03

LPBM

0.96 ± 0.01

3.77 ± 1.51

0.36 ± 0.11

IBM

0.95 ± 0.01

3.64 ± 1.90

0.30 ± 0.10

LBM

0.95 ± 0.01

2.90 ± 0.29

0.37 ± 0.07

Bowel cavity

0.95 ± 0.01

4.44 ± 1.18

1.01 ± 0.24

All bowel

0.91 ± 0.01

3.22 ± 0.86

0.65 ± 0.19

Small bowel

0.87 ± 0.08

7.64 ± 7.10

1.48 ± 1.33

Large bowel

0.81 ± 0.17

11.51 ± 15.92

2.63 ± 4.16

Rectum

0.87 ± 0.06

6.34 ± 5.20

1.23 ± 1.04

Bladder

0.94 ± 0.03

3.11 ± 1.08

0.63 ± 0.24