Basic Treatment Planning

2-D Whole Breast Irradiation

Field description: – 2 tangential photon beams: medial entering at midline and lateral entering at the mid-axillary line. – Exposure of >2-3 cm of the lung should be avoided – Maximum Heart distance <1cm

Dose schedules

– 50Gy / 25 fractions – 42Gy / 16 fractions (Canadian Trial) – 40Gy / 15 fractions (UK START Trial)