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Table 3 Normal tissue constraints

From: Significance of an increase in the Child-Pugh score after radiotherapy in patients with unresectable hepatocellular carcinoma

 

1.8-2.0 Gy per fraction

2.5-3.0 Gy per fraction

4.0-5.0 Gy per fraction

Liver

TL-V30Gy < 60%

 

TL-V20Gy < 60%

Mean dose < 31 Gy

Mean dose < 30 Gy

Mean dose < 22 Gy

Kidney

V18Gy < 33%

Mean dose < 16 Gy

Mean dose < 13 Gy

Spinal cord

D2cc < 45 Gy

D2cc < 42 Gy

D2cc < 33 Gy

Intestine

D2cc < 50 Gy

D2cc < 45 Gy

D2cc < 35 Gy

  1. Abbreviations: TL total liver, V 30Gy  volume of normal tissue that receives more than 30 Gy, D 2cc  maximal dose to 2 cc of normal tissue.