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Table 2 Average dosimetric data and plan evaluation parameters for rectum and bladder

From: Passive proton therapy vs. IMRT planning study with focal boost for prostate cancer

   V90 p* V75< 15 %b p* V70< 25 %b p* V65< 35 %b p* V60< 50 %b p* D mean a p* ID c p* ID c (w) p*
Rectum (w = wall) Proton 1.1 % 0.315 6.7 % 0.631 9.7 % 0.315 12.3 % 0.029 14.6 % 0.009 21.5 <0.001 50.1 <0.001 15.2 <0.001
IMRT 0.7 % 7.3 % 11.4 % 15.7 % 20.4 % 38.9 92.1 25.7
Bladder (w = wall)   V90 p* V80< 15 %b p* V75< 25 %b p* V70< 35 %b p* V65< 50 %b p* D mean a p* ID c p* ID c (w) p*
Proton 2.8 % 0.089 8.1 % 0.035 10.0 % 0.075 12.1 % 0.165 14.1 % 0.218 19.7 0.190 60.6 0.043 21.1 0.052
IMRT 1.7 % 5.0 % 6.7 % 8.6 % 10.5 % 24.5 82.9 25.7
  1. *p-value associated with the values to the left; significant values are bold
  2. ain Gy
  3. bRTOG0815 constraint
  4. cIntegral dose in Gy cm3