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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.