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Table 4 Median Dose-Volume Histogram and Dose-Wall Histogram data for the patients treated with 3DCRT.

From: Comparison of rectal volume definition techniques and their influence on rectal toxicity in patients with prostate cancer treated with 3D conformal radiotherapy: a dose-volume analysis

  Method 1 Method 2 Method 3 Method 4 p
Min dose (Gy) 8.2 3.2 1.5 1.9 0.01
Mean dose (Gy) 57.5 54.0 49.6 51.1 <0.001
Max dose (Gy) 75.1 75.1 75.1 75.1 NS
V30 Gy (%) 86.7 84.5 80.6 82.1 <0.001
V40 Gy (%) 78.1 73.3 68.6 70.7 <0.001
V50 Gy (%) 70.9 64.2 55.3 59.8 <0.001
V60 Gy (%) 55.6 48.4 41.7 45.1 <0.001
V70 Gy (%) 32.9 27.9 24.3 26.5 <0.001