. 2015 Aug 20;10:177. doi: 10.1186/s13014-015-0480-y

Table 5.

Constraints for organs at risk in adjuvant radiotherapy of early breast cancer

Organ at risk	Normofractionation 2 Gy per fraction\5fr\week	Hypofractionated schedule 2,3 Gy per fraction\4 fr\week
LADCA	V_20Gy = 0 %	V_19Gy = 0 %
Heart	V_20Gy = 10 % V40Gy =5 %	V_19Gy = 0 %
Ipsilateral Lung	V_20Gy = 25 % (exclusive periclavicular LN)	V_19Gy = 25 % (exclusive periclavicular LN)
	V_20Gy = 35 % (inclusive periclavicular LN)	V_19Gy = 35 % (inclusive periclavicular LN)
Spinal cord	Max 45 Gy	Max 42 Gy

LADCA left anterior descending coronary artery, LN lymph nodes