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Table 2 Summary of DVH analysis for organs at risk

From: Whole abdomen radiation therapy in ovarian cancers: a comparison between fixed beam and volumetric arc based intensity modulation

  IMRT6 IMRT15 RA15 RA6 P
    Bone Marrow (1095 ± 235 cm3)  
Mean [Gy] 24.7 ± 1.4 22.8 ± 1.5 22.6 ± 1.5 23.4 ± 1.3 b,c
D 1% [Gy] 44.9 ± 0.9 44.8 ± 0.4 45.5 ± 0.7 45.6 ± 0.9 a,b
V 30 Gy [%] 35.0 ± 4.0 31.8 ± 4.1 29.6 ± 5.1 31.5 ± 5.1 b,c
V 45 Gy [%] 1.3 ± 1.2 0.9 ± 0.7 2.2 ± 1.3 2.2 ± 1.4 a,b
    Bladder (208 ± 219 cm3)  
Mean [Gy] 39.6 ± 1.9 38.7 ± 2.6 39.5 ± 1.5 40.4 ± 1.2 NS
D 1% [Gy] 46.9 ± 0.8 48.5 ± 15.2 46.5 ± 0.5 46.9 ± 0.7 NS
V 40 Gy [%] 57.8 ± 11.3 58.4 ± 25.8 56.7 ± 9.6 61.4 ± 9.1 NS
    Bladder - PTV (131 ± 140 cm3)  
Mean [Gy] 36.5 ± 1.8 35.2 ± 0.8 36.9 ± 0.9 38.3 ± 0.8 a,b,d
D 1% [Gy] 45.1 ± 1.3 44.7 ± 1.0 45.3 ± 1.0 46.0 ± 1.6 b
V 40 Gy [%] 32.7 ± 12.5 26.1 ± 7.1 31.9 ± 8.6 39.6 ± 8.3 NS
    Heart (438 ± 166 cm3)  
Mean [Gy] 9.1 ± 1.6 7.8 ± 1.0 7.7 ± 1.0 8.6 ± 1.1 c,d
D 1% [Gy] 23.8 ± 0.5 23.4 ± 0.2 24.2 ± 0.4 24.5 ± 0.4 a,b
    Kidneys (242 ± 21 cm3)  
Mean [Gy] 20.0 ± 3.3 14.7 ± 1.8 16.0 ± 1.8 17.0 ± 2.0 a,b,c
D 1% [Gy] 31.5 ± 1.5 27.3 ± 1.5 29.7 ± 1.3 29.6 ± 1.5 a,b,c
V 20 Gy [%] 51.7 ± 14.7 32.1 ± 8.0 41.1 ± 9.5 42.0 ± 11.0 c
    Kidneys - PTV (141 ± 18 cm3)  
Mean [Gy] 16.1 ± 3.0 9.8 ± 1.9 10.3 ± 0.9 11.7 ± 0.7 b,c
D 1% [Gy] 25.7 ± 1.9 20.9 ± 1.2 23.2 ± 1.0 23.9 ± 1.5 a,b,c
V 20 Gy [%] 22.9 ± 11.9 2.7 ± 28 5.7 ± 2.2 6.9 ± 2.5 a,b,c,d
    Liver (1144 ± 231 cm3)  
Mean [Gy] 23.2 ± 0.5 21.8 ± 0.9 22.4 ± 0.7 22.9 ± 0.3 NS
D 1% [Gy] 30.9 ± 1.0 29.4 ± 1.4 28.7 ± 0.9 29.6 ± 0.9 NS
V 20 Gy [%] 80.7 ± 2.6 77.1 ± 3.5 79.5 ± 3.2 80.5 ± 2.3 c
    Normal Liver (273 ± 84 cm3)  
Mean [Gy] 16.4 ± 0.4 14.0 ± 0.9 14.8 ± 0.5 15.9 ± 0.4 b,c
D 1% [Gy] 26.5 ± 0.7 25.2 ± 1.3 25.7 ± 0.8 26.6 ± 0.4 c,d
V 20 Gy [%] 26.1 ± 3.9 17.2 ± 3.8 23.2 ± 3.1 27.9 ± 2.7 a,c,d
    Rectum (129 ± 84 cm3)  
Mean [Gy] 40.7 ± 2.6 40.8 ± 2.4 41.1 ± 2.5 41.3 ± 2.5 NS
D 1% [Gy] 46.1 ± 0.9 45.9 ± 0.7 46.4 ± 0.7 46.6 ± 0.5 NS
V 45 Gy [%] 9.7 ± 10.9 8.2 ± 4.5 14.9 ± 11.7 17.1 ± 6.1 a,b
    Spine (23 ± 6 cm3)  
D 1% [Gy] 22.8 ± 1.9 19.0 ± 1.8 19.4 ± 1.1 19.6 ± 1.5 b,c
  1. Dx% = dose received by the x% of the volume; Vx% = volume receiving at least xGy of the prescribed dose.