Imaging for early stage breast cancer

RT technique

External beam, forward planned IMRT Planning CT prior to randomization CTV partial breast is tumour bed + 15 mm PTV is CTV + 5-8 mm depending on institution and fixation 40 Gy / 15 fr, 2.67 Gy per fr, 5 per week Dose distribution 95-105% V17Gy heart < 10% LADCA max point dose 17 Gy V17Gy ipsilat lung < 25% V40Gy whole breast max 50% if partial breast RT