3D reconstruction of defined target volumes and the organs of risk. A: The left breast is shown in red, heart in pink, lungs in brown and yellow, thyroid in blue, spinal cord in white; B: Process of practical delineation of breast, lymph nodes and organs of risk; C: 3D reconstruction of defined target LN volumes (supra clavicular LN: fuschia, infra clavicular LN: ochre, axilla: dark blue, internal mammary chain: blue, Rotter LN, white) and thyroid (dark blue) as organ of risk.