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Table 1 Prescription dose to target volumes and dose-volume statistics

From: Local failure patterns for patients with nasopharyngeal carcinoma after intensity-modulated radiotherapy

Target

Goal (Gy)

Median below goal (%)

Median minimal dose (Gy)

Median maximal dose (Gy)

Median mean dose (Gy)

Median volume (cm3)

GTVnx

68

0.18

65.57

81.24

74.82

33.62

CTV1

60

0.33

55.67

79.88

70.35

68.25

CTV2

54

2.07

39.25

78.21

63.52

322.97

GTVnd(L)

60-64

0.00

62.01

72.20

68.46

4.98

GTVnd(R)

60-64

0.00

61.95

72.15

68.02

5.96

  1. Abbreviations: GTVnx primary nasopharyngeal gross tumor volume, CTV clinical target volume, GTVnd(L) GTV for the involved left cervical lymph nodes, GTVnd(R) GTV for the involved right cervical lymph nodes.