title: Verification of dose calculations with a clinical treatment planning system based on a point kernel dose engine.
abstract: Dose calculations with a collapsed cone algorithm implemented in a clinical treatment planning system have been studied. The algorithm has been evaluated in homogeneous as well as in heterogeneous media, and the results have been compared to measurements and Monte Carlo simulations. Commonly encountered clinical beam configurations as well as more complex geometries have been pursued to test the limitations of the model. The results show that the accuracy level reached allows for clinical use. Some situations, e.g., large wedge beams and dose calculations in the build up region, not specific to the collapsed cone model, show deviations (outside +/- 3%) compared to measurements.
authors.affiliation: MDS Nordion AB, Box 1704, SE-751 47 Uppsala, Sweden. lweber@mds.nordion.com
authors.forename: Lars
authors.initials: L
authors.lastname: Weber
authors.forename: Per
authors.initials: P
authors.lastname: Nilsson
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D006801:Humans; D009010:Monte Carlo Method; D019047:Phantoms, Imaging; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted / Q000379:methods* / Q000706:statistics & numerical data*; D020266:Radiotherapy, Conformal / Q000379:methods