Advanced TP

Beam angle optimization

current status of the clinical use of non-coplanar (nCP) beams and of beam angle optimization (BAO):  nCP beams used a lot in cranial SRT and SBRT (liver, lung), generally without IMRT  Gantry-based units: nCP beams requires couch rotations  time consuming, so preferentially avoided  (Commercial) TPS for BAO + IMRT are generally not available

 little is (and can be) known on the added value of BAO + IMRT and non-coplanar beams