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Table 2 The actual exposure doses of targets and parts of organs at risk

From: Analysis of late toxicity in nasopharyngeal carcinoma patients treated with intensity modulated radiation therapy

Target volume   Minimal dose mean Maximum dose mean Average dose mean Average fractional dose mean V95 mean Volume D33/D5 mean
(Gy) (Gy) (Gy) (Gy) (%) (Gy)
GTVnx   63.42 78.34 71.99 2.40 99.38   
GTVndL   59.07 71.53 71.53 2.38 99.73   
GTVndR   59.16 73.42 66.47 2.22 99.93   
CTV1   54.16 77.38 67.59 2.25 99.60   
CTV2   37.54 76.68 60.83 2.03 98.22   
OAR         
Brainstem   5.47 50.47 21.99 1.54   5% 46.13
Spinal cord   7.59 37.23 24.74 1.32   1 cc 39.45
Temporal lobes L 1.73 61.79 12.49 0.49   33% 14.76
  R 2.00 61.95 12.42 0.51    15.27
Parotids L 14.68 58.30 31.62 1.18   33% 35.38
  R 15.00 59.09 32.26 1.22    36.60
Temporomandibular joints L 19.34 47.54 29.22 1.15   33% 34.51
  R 19.75 46.51 29.38 1.16    34.84
Optical nerves L 6.66 34.00 16.15 1.09   5% 32.58
  R 6.88 33.52 16.27 1.10    32.99
Optic chiasma   9.79 27.50 16.75 0.90   5% 26.93