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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.
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Radiation Oncology

ISSN: 1748-717X

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