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Table 1 Mean values of GTV, CTV, and rectum, bladder, sigmoid colon, and small bowel volumes according to groups.

From: Comparison of conventional and CT-based planning for intracavitary brachytherapy for cervical cancer: target volume coverage and organs at risk doses

  Group 1
(cc ± SD)
Group 2
(cc ± SD)
P
GTV 8.1 ± 5.4 20.6 ± 12.3 < 0.001
CTV 24.7 ± 10.7 48.4 ± 20.8 < 0.001
Rectum 76.1 ± 37.7 82.3 ± 36.9 0.19
Bladder 57.8 ± 19.5 63.0 ± 19.9 0.24
Sigmoid colon 38.2 ± 15.2 40.5 ± 16.3 0.72
Small bowel 508.9 ± 193.6 488.9 ± 226.1 0.68
  1. *Abbreviations: GTV = gross tumor volume, CTV = clinical target volume, Group 1 = CTV coverage > 95% isodose line prescribed to point A, Group 2 = CTV coverage < 95% isodose line prescribed to point A.