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3D Conformal External Beam RT
Non-invasive technique feasible in every RT department
Usually 4-5 non-coplanar photon beams
Prone or supine position
Final pathology report is available
Less dependent on experience and operative skills
Treatment is very seldom interrupted
Optimal dose homogeneity
CTV lumpectomy bed is defined guided by pre-op imaging, details from
surgical/pathology report, clips, seromen, postoperative changes, and a
margin of 10-15 mm is added and limited within the CTV breast (5mm from
skin and chest wall)