title: Cone-beam CT for radiotherapy applications.
abstract: Clinical implementation of cone-beam tomography has been hampered by the lack of two-dimensional electronic x-ray detectors that can encompass the full width of the body. We encountered the undersized detector problem in our development of a cone-beam CT system for radiotherapy applications. In order to mitigate the problem, we developed an algorithm which permits an increased reconstruction volume to be imaged using a detector of a given size. We describe the algorithm and report on its implementation using a radiotherapy simulator configured with a digital fluorography unit.
authors.affiliation: Department of Radiation Oncology, University of Washington School of Medicine, Seattle 98195-6043, USA.
authors.forename: P S
authors.initials: PS
authors.lastname: Cho
authors.forename: R H
authors.initials: RH
authors.lastname: Johnson
authors.forename: T W
authors.initials: TW
authors.lastname: Griffin
mesh_terms: D000465:Algorithms; D055592:Biophysical Phenomena; D001703:Biophysics; D003198:Computer Simulation; D006801:Humans; D019047:Phantoms, Imaging; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000295:instrumentation / Q000379:methods; D011878:Radiotherapy / Q000295:instrumentation / Q000379:methods* / Q000706:statistics & numerical data; D013679:Technology, Radiologic; D014057:Tomography, X-Ray Computed / Q000295:instrumentation / Q000379:methods* / Q000706:statistics & numerical data