Research Article

Efficacy of Stereotactic Body Radiotherapy for Recurrent or Residual Hepatocellular Carcinoma after Transcatheter Arterial Chemoembolization

Table 2

Dose constraints for critical structures (treatment in 3–5 fractions).

Critical structuresDose constraints

Spinal cord18 < 1 mL
 Gy
Lungs (right + left)5 < 40%
10 < 20%
Heart20 < 15 cm3
 Gy
Oesophagus25 < 1 mL
Remaining healthy liver15 < 30%
> 700 cm3
Stomach25 < 1 mL
Intestines27 < 1 mL
Kidneys15 < 30%