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Table 2 Differences in plan parameter (mean (SD)) for all three RT modalities

From: In silico comparison of the dosimetric impacts of a greater omentum spacer for abdominal and pelvic tumors in carbon-ion, proton and photon radiotherapy

 MeasureC-ion RTProton RTPhoton RT
Pre-spacerPost-spacerPre-spacerPost-spacerPre-spacerPost-spacer
PTVD98% (Gy)68.2 (0.44)67.7 (0.75)68.4 (0.24)68.2 (0.36)64.9 (1.52)67.6 (0.51)
Dmean (Gy)72.5 (0.97)72.4 (0.79)74.3 (0.44)74.2 (0.33)72.7 (0.32)72.1 (0.17)
D50% (Gy)72.7 (1.07)72.6 (0.86)74.9 (0.51)74.7 (0.39)73.3 (0.43)72.4 (0.19)
D2% (Gy)75.4 (1.92)74.7 (1.42)76.8 (1.01)76.7 (0.69)74.9 (0.45)74.0 (0.38)
HI0.096 (0.03)0.093 (0.03)0.111 (0.01)0.113 (0.01)0.135 (0.01)0.089 (0.01)
Spinal cordDmax (Gy)4.3 (2.82)3.5 (2.10)5.4 (3.77)4.1 (2.74)14.8 (6.09)13.3 (5.31)
  1. Abbreviations: Dmean Mean dose, D2% Minimum dose to ‘hottest’ 2% of the volume;
  2. D98% Minimum dose to ‘hottest’ 98% of the volume, Dmax Maximum dose