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Table 2 The volumes of the dose matrix receiving 50% (3.5 Gy), 100% (7 Gy), 150% (10.5 Gy), and 200% (14 Gy) of point-A doses obtained from the conventional plan and the 3D CT plan 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) Group 2 (cc) P
Conventional plan    
   3.5 Gy 346.0 ± 81.3 375.4 ± 90.7 0.14
   7 Gy 132.4 ± 31.5 137.4 ± 27.0 0.46
   10.5 Gy 70.8 ± 18.6 69.5 ± 13.5 0.72
   14 Gy 42.4 ± 12.8 41.7 ± 8.7 0.76
3D CT plan    
   3.5 Gy 521.2 ± 127.3 685.7 ± 146.0 < 0.001
   7 Gy 191.1 ± 46.5 266.8 ± 81.3 < 0.001
   10.5 Gy 98.7 ± 26.5 135.1 ± 39.0 < 0.001
   14 Gy 60.2 ± 18.4 78.9 ± 22.1 0.003
  1. *Abbreviations: Group 1 = CTV coverage > 95% isodose line prescribed to point A, Group 2 = CTV coverage < 95% isodose line prescribed to point A.