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Table 1 Constraints given by the SHARE and NSABP/RTOG protocols used to optimize all treatment plans

From: Accelerated partial breast irradiation using robotic radiotherapy: a dosimetric comparison with tomotherapy and three-dimensional conformal radiotherapy

PTV Dmax < 44 Gy
D99% ≥ 38Gy
D95% ou D90% ≥ 40 Gy
Homolateral lung V20Gy < 1.3 %
V12Gy < 15 %
V10Gy < 5.7 %
V5Gy < 8 %
Contralateral lung V20Gy < 1 %
V10Gy < 2 %
V5Gy < 3 %
V2Gy < 15 %
Heart V20Gy < 0.5 %
V10Gy < 1 %
V5Gy < 4.1 %
V2Gy < 5 % for left lesions
V2Gy < 40 % for right lesions
Contralateral breast Dmax < 3 % of prescribed dose (Dmax < 1.3 Gy)
NTBV V20Gy < 50 %
V18Gy <60 %