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Table 2 Geometric details of failed rGTVs

From: Methodology for analysis and reporting patterns of failure in the Era of IMRT: head and neck cancer applications

 

n.

Percent

N. of recurrences

26

 

Recurrence volume

  

 Mean (SD)

12.5

(23)

Location of centroid using RIR

  

 GTV

12

(46)

 CTV1

7

(27)

 CTV2

1

(4)

 CTV3

1

(4)

 PTV1

4

(15)

 Supraclavicular field

1

(4)

Location of centroid using DIR

  

 GTV

22

(84)

 CTV1

1

(4)

 CTV2

1

(4)

 CTV3

1

(4)

 Supraclavicular field

1

(4)

  1. Abbreviations:  DIR Deformable image registration, RR Rigid Registration, GTV gross tumor volume, CTV clinical target volume, PTV planning target volume