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Table 4 Bladder, Bladder Wall, Proximal Bladder, and Proximal Bladder Wall DVH Analysis and Univariate Associations with Grade ≥ 2 GU Toxicities

From: Acute gastrointestinal and genitourinary toxicity of image-guided intensity modulated radiation therapy for prostate cancer using a daily water-filled endorectal balloon

  Bladder In-field Bladder Bladder Wall In-field Bladder Wall
  Mean ± SD P value Mean ± SD P value Mean ± SD P value Mean ± SD P value
Volume (cm3) 246 ± 167 0.31 101.5 ± 42.9 0.34 55.2 ± 24.6 0.44 25.9 ± 8.1 0.65
Dmin (Gy) 3.6 ± 4.7 0.92 13.0 ± 5.9 0.55 3.6 ± 4.7 0.94 12.5 ± 6.6 0.21
Dmax (Gy) 82.5 ± 1.6 0.26 82.5 ± 1.6 0.26 82.4 ± 1.6 0.24 82.4 ± 1.6 0.24
Dmean (Gy) 31.0 ± 11.2 0.64 50.4 ± 5.8 0.16 33.2 ± 10.6 0.72 54.9 ± 5.7 0.23
Dmedian (Gy) 23.1 ± 15.2 0.62 48.6 ± 8.1 0.16 23.4 ± 16.2 0.60 56.0 ± 9.9 0.20
V10 (%) 66.6 ± 25.1 0.66 99.2 ± 3.2 0.11 64.6 ± 22.8 0.61 99.0 ± 2.9 0.14
V20 (%) 57.1 ± 24.1 0.55 94.6 ± 7.6 0.03 56.2 ± 20.9 0.66 94.5 ± 6.5 0.06
V30 (%) 46.4 ± 20.4 0.65 81.3 ± 11.1 0.20 47.1 ± 17.5 0.84 82.6 ± 9.5 0.37
V40 (%) 35.4 ± 15.0 0.65 64.6 ± 11.9 0.48 38.7 ± 13.6 0.86 69.7 ± 10.5 0.57
V50 (%) 25.4 ± 10.1 0.40 48.0 ± 11.4 0.27 30.5 ± 10.4 0.61 56.1 ± 10.9 0.30
V60 (%) 17.9 ± 7.3 0.46 34.6 ± 10.0 0.32 24.2 ± 8.5 0.63 45.4 ± 10.6 0.34
V65 (%) 15.1 ± 6.3 0.41 29.4 ± 9.2 0.26 21.9 ± 7.8 0.59 41.3 ± 10.1 0.30
V70 (%) 12.4 ± 5.4 0.38 24.6 ± 8.3 0.23 19.7 ± 7.1 0.56 37.5 ± 9.6 0.29
V75 (%) 9.5 ± 4.4 0.32 18.9 ± 7.4 0.22 16.9 ± 6.4 0.45 32.6 ± 9.3 0.24
V79.2 (%) 4.7 ± 3.0 0.45 9.9 ± 6.5 0.48 10.2 ± 5.3 0.52 20.6 ± 10.4 0.45
  1. Abbreviations: DVH = dose volume histogram; Dmin = minimum dose; Dmedian = median dose; Dmean = mean dose; Dmax = maximum dose; V10, V20, V30, V40, V50, V60, V65, V70, V75, V79.2 = volume receiving 10 Gy, 20 Gy, 30 Gy, 40 Gy, 50 Gy, 60 Gy, 65 Gy, 70 Gy, 75 Gy, 79.2 Gy, respectively.
  2. Note: The results are presented as mean ± standard deviation.