ESTRO Multidisciplinary Management of Breast Cancer 2017

How to reduce boost volume ?

• V95: • PTV_CT plan- isotrop margins = 1.6 times larger than PTV_conv sim • PTV_CT plan – anisotrop margins ~ PTV_con sim

• Most important factor for boost volume:

• Size of excisional volume  related to time between surgery and RT

Hanbeukers et al 2009