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Table 2 Parameters of interobserver variability (misdelineations excluded from analysis)

From: MRI and CT imaging for preoperative target volume delineation in breast-conserving therapy

  CT MRI  
  Median Range Median Range p-value
Mean volume (cm 3 )      
  GTV 2.1 0.3 – 21.3 2.7 0.4 – 19.4 <0.001
  CTV 48.1 27.7 – 137.3 59.0 30.4 – 153.1 <0.001
Conformity index      
  GTV 0.56 0.11 – 0.83 0.61 0.37 – 0.78 <0.001
  CTV 0.82 0.39 – 0.93 0.84 0.47 – 0.93 0.123
Mean dCOM (mm)      
  GTV 1.1 0.3 – 12.8 1.2 0.3 – 3.6 0.245
  CTV 1.4 0.3 – 13.6 1.8 0.1 – 4.8 0.836
  1. CI Conformity Index, GTV gross tumor volume, CTV clinical target volume, dCOM center of mass distance.