Table 1.

Dose constraints of normal tissue

Organ at risk	Dose constraints
Heart	Dmean < 3 Gy, Dmax < 30 Gy (minor violation < 40 Gy)
Ipsilateral Lung	Dmean < 8 Gy, V20Gy < 10% (minor violation < 15%)
Contralateral Breast	Dmean < 3 Gy, Dmax < 20 Gy
Spinal cord	Dmax < 45 Gy