Particle Therapy 2017

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Small Bowel: Dose / Volume distribution in 31 patientsxx treated to mean target doses of 72.3 Gy(RBE) (range: 64-76) Volume mean (cc) range (cc) V 5 (24 pts.) 86.5 2.0 - 238 V20 (24 pts.) 45.1 0.2 - 151 V30 (22 pts.) 35.5 0.1 - 120 V40 (20 pts.) 27.5 0.2 - 89.0 V50 (19 pts.) 17.7 0.2 - 59.0 V60 (17 pts.) 7.6 0.4 - 29.0 V70 (12 pts.) 2.4 0.1 - 11.0 Volume mean (cc) range (cc) V75 (10 pts.) 1.9 <0.1 - 3.1 V80 (4 pts.) 0.2 <0.1 - 0.5

Results at PSI

(Schneider et al., 2010, ASTRO presentation)

XX = volume definition and analysis based on initial planning CT