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Table 5 Normal Structure Doses.

From: Dosimetric impact of target definitions on normal structures in head and neck cancer

  RTOG 3Dose P
Parotid    
   Mean (cGy) 2844.64 2631.30 0.01
   V30 (%) 33.37 29.79 0.001
Mandible    
   Mean 4430.08 4125.83 0.001
   V70 6.779 1.772 0.03
GSL Mean 6604.05 6223.56 <0.001
IPC Mean 6136.40 5645.61 0.001
Brainstem    
   Mean 1390.43 1300.14 0.001
   Max 4609.93 4398.13 0.01
Cord Max 4284.28 4272.41 0.75
Tissue NOS V70 0.12145 0.04679 0.2
  1. Abbreviations: RTOG= two dose level plan; 3Dose= three dose level plan; V30= volume receiving 30 Gy or more; V70= volume receiving 70 Gy or more; GSL= glottic and supraglottic larynx; IPC= inferior pharyngeal constrictor; Tissue NOS= tissue within body not contoured as target volume or organ at risk