title: An algorithm for detection of couch-beam intersection.
abstract: A graphical method of avoiding beam blocking by couch supports is described. The technique uses a simplification of the couch cross-section and matrix operations to project the beam into the plane normal to the longitudinal axis of the couch. The algorithm is described, along with a software implementation testing. The application of the software to 3D treatment planning is discussed.
authors.affiliation: Regional Medical Physics Department, Northern Centre for Cancer Treatment, Newcastle General Hospital, Newcastle-upon-Tyne, United Kingdom. andrew.buckle@nuth.nhs.uk
authors.forename: Andrew H
authors.initials: AH
authors.lastname: Buckle
mesh_terms: D000465:Algorithms; D006801:Humans; D008962:Models, Theoretical; D011880:Radiotherapy Planning, Computer-Assisted; D020266:Radiotherapy, Conformal; D012399:Rotation; D014584:User-Computer Interface