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Table 3 Dosimetric parameters for small bowel, rectum, bladder and femoral heads

From: Optimal dose limitation strategy for bone marrow sparing in intensity-modulated radiotherapy of cervical cancer

Volume IMRT (N) IMRT (BM) IMRT (OC) IMRT (OC + LS)
Small Bowel
 V10 (%) 84.83 ± 11.28 79.19 ± 24.78 78.69 ± 24.67 78.75 ± 24.69
 V20 (%) 72.19 ± 11.65 66.44 ± 21.92 68.90 ± 22.21 65.29 ± 21.72
 V30 (%) 50.96 ± 12.88 49.13 ± 18.04 51.03 ± 17.64 47.93 ± 17.64
 V40 (%) 28.30 ± 10.79 26.44 ± 12.75 27.65 ± 12.41 26.38 ± 12.09
 V50 (%) 7.87 ± 4.13 7.80 ± 4.79 7.96 ± 5.01 8.53 ± 4.99
Rectum
 V10 (%) 96.80 ± 4.96 96.72 ± 5.23 96.69 ± 5.25 96.70 ± 5.22
 V20 (%) 90.29 ± 5.69 89.30 ± 5.94 90.06 ± 5.93 89.45 ± 6.14
 V30 (%) 74.09 ± 5.92 74.30 ± 4.90 74.36 ± 4.71 73.72 ± 3.84
 V40 (%) 53.89 ± 7.45 54.45 ± 6.40 54.57 ± 6.77 54.60 ± 4.36
 V50 (%) 25.27 ± 8.17 26.07 ± 8.26 26.01 ± 8.32 27.26 ± 7.70
Bladder
 V30 (%) 95.40 ± 4.14 92.25 ± 4.70 91.00 ± 5.59 88.57 ± 5.97
 V40 (%) 72.03 ± 5.43 66.47 ± 10.30 63.63 ± 11.58 61.53 ± 11.81
 V50 (%) 29.49 ± 13.27 29.39 ± 13.96 29.45 ± 13.48 30.05 ± 13.94
Femoral head (left)
 V30 (%) 15.63 ± 4.29 10.03 ± 3.94* 8.37 ± 3.69 7.71 ± 3.78
 V40 (%) 5.98 ± 3.35 2.86 ± 2.60* 2.51 ± 2.52 2.39 ± 2.48
 V50 (%) 0.46 ± 0.75 0.34 ± 0.70 0.38 ± 0.72 0.39 ± 0.69
Femoral head (right)
 V30 (%) 14.96 ± 4.15 9.19 ± 3.29* 7.39 ± 2.97 7.20 ± 3.37
 V40 (%) 5.20 ± 2.90 2.43 ± 2.08* 2.01 ± 2.00 1.98 ± 1.99
 V50 (%) 0.34 ± 0.62 0.20 ± 0.43 0.30 ± 0.59 0.32 ± 0.59
  1. Abbreviations: IMRT (N) without bone marrow as avoidance structures, IMRT (BM) whole bone marrow as avoidance structures, IMRT (OC) os coxae as avoidance structures, IMRT (OC + LS) Both os coxae and lumbosacral spine as avoidance structures, Vn percentage of volume receiving n Gy
  2. *p value < 0.05 while comparing IMRT (N) plan with other three plans
  3. p value < 0.05 while comparing IMRT (BM) plan with IMRT (OC) and IMRT (OC + LS) plans, respectively