Diarrhea<G2 Median SB V Diarrhea ≥G2 Median SB V V5V5 24276 V 10 16274 V 15 4194 V 20 094 V 30 070 V 35 064 V 40 054 >V 42.75 023 Dose-Volume Relationship of Acute SB Toxicity