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Table 3 Summary of quantitative measures for structures for the IR case benchmarking study patient

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      
Observer ViPlan (cm3) Δ V Obs iPan (%) VObsiPlan (cm3) DSC Obs iPlan I Obs ObsiPlan
iPlan 28.5 - - - -
A 64.8 127.2 25.4 0.54 0.39
B 62.3 118.6 28.0 0.62 0.45
C 61.1 114.3 27.8 0.62 0.46
D 64.1 124.9 27.9 0.60 0.43
E 64.5 126.2 27.7 0.60 0.43
F 73.9 159.1 27.1 0.53 0.37
G 45.2 58.3 28.2 0.77 0.62
Mean A-G (SD) 62.3 (8.6) 118.4 (30.2) 27.4 (1.0) 0.61 (0.08) 0.45 (0.08)
BLADDER      
Observer ViPlan (cm3) Δ V Obs iPan (%) VObsiPlan (cm3) DSC Obs iPlan I Obs ObsiPlan
iPlan 185.8 - - - -
A 186.2 0.2 168.1 0.90 0.90
B 181.7 −2.2 169.9 0.92 0.94
C 171.5 −7.7 160.9 0.90 0.94
D -a -a -a -a -a
E 175.1 −5.8 162.5 0.90 0.93
F -b -b -b -b -b
G 185.1 −0.4 172.1 0.93 0.93
Mean A-G (SD) 179.9 (6.4) −3.2 (3.4) 166.7 (4.8) 0.91 (0.01) 0.93 (0.01)
RECTUM      
Observer ViPlan (cm3) Δ V Obs iPan (%) VObsiPlan (cm3) DSC Obs iPlan I Obs ObsiPlan
iPlan 123.5 - - - -
A 152.6 23.5 106.3 0.77 0.70
B 112.1 −9.2 82.3 0.70 0.73
C 98.2 −20.5 86.9 0.78 0.88
D 100.6 −18.6 86.4 0.77 0.86
E 73.8 −40.3 64.3 0.65 0.87
F 118.7 −3.9 83.1 0.69 0.70
G 103.3 −16.4 84.7 0.75 0.82
Mean A-G (SD) 108.5 (24.1) −12.2 (19.4) 84.9 (12.2) 0.73 (0.05) 0.80 (0.08)
  1. a Outline missing.
  2. b Structure not completely outlined.