Target Volume Determination 2015

CTV → PTV (Planning Target Volume) OAR → PRV (Planning Organs at Risk Volume)

5 mm

PTV Breast 5 mm, skin 3-5 mm PTV Boost 5 – 10 mm, skin 3-5 mm PTV Chest wall 5 mm, skin 0-5 mm PTV Nodes 5 mm PRV 5 mm Avoid the lungs