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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
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Head & Neck Oncology

ISSN: 1758-3284