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Table 6 Patient treated with primary RT; recurrence volume size, recurrence site, overlap volume size, epicenter dose and distance between epicenter in GTVr and GTVp

From: Patterns of local-regional recurrence after conformal and intensity-modulated radiotherapy for head and neck cancer

Case No.

Recurrence volume (ccm)

In-field

Marginal

Out-of- field

Overlap size (ccm)

Epicenter dose (Gy) in GTVr/GTVp and distance (cm)

1

6.5

X

  

4.0

71.4/70.2, 0.9

2

17.4

  

X

0.0

34.4/60.0, 5.2

3

73.7

X

  

17.1

69.2/71.2, 3.7

4

44.3

X

  

23.8

72.8/71.6, 1.7

5

76.0

X

  

18.3

56.2/61.5, 1.8

6

74.7

X

  

15.8

71.5/71.6, 0.4

7

41.1

 

X

 

0.0

54.7/72.4, 4.5

8

15.6

X

  

15.0

67.8/66.7, 3.0

9

46.4

X

  

7.3

70.5/71.2, 4.2

10

14.2

X

  

7.3

70.2/68.8, 2.8