title: Fast algorithms for computing and displaying dose-distributions in tomogram-oriented brachy-radiotherapy.
abstract: This paper describes in detail a dose calculation algorithm tailored to the needs of tomogram-oriented brachy-radiotherapy and a general-purpose dose visualization for displaying the dose distribution as isolines (or rather interval planes). The verbal description of the algorithms is accompanied by structograms. However, the intention of the authors is to present very fast algorithms that are easy to implement and to give a ready-to-use example formulated in 68020 assembler code. Execution times are estimated theoretically by counting clock cycles and practically by measuring the execution time of sample calculations. It turns out that both the dose calculation as well as the visualization algorithm need less than 1 s when applied to a radioactive point source lying on an arbitrary 320 x 256 grid of three-dimensional space.
authors.affiliation: Universität Tübingen, Mathematisches Institut, Germany.
authors.forename: R A
authors.initials: RA
authors.lastname: Bödi
authors.forename: T W
authors.initials: TW
authors.lastname: Kaulich
mesh_terms: D000465:Algorithms; D001918:Brachytherapy / Q000379:methods*; D003626:Data Display; D006801:Humans; D008432:Mathematical Computing; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted; D011881:Radiotherapy, Computer-Assisted / Q000379:methods*; D012985:Software Design