title: A computer method to model the dose distribution of high energy photon grid therapy in three dimensions.
abstract: High energy photon grid therapy is the application of multiple circular divergent photon beams to the palliative care of patients. The photon beams are defined by cylindrical holes in a large attenuator placed in the path of an open radiation beam. We have developed a computer method to model the three-dimensional dose distribution of high energy photon grid therapy. The semiempirical method requires the measured data from a single cylindrical hole of the size to be modeled. For a given hole diameter, any arbitrary geometry can be calculated. This information is important when investigating the clinical implications of grid therapy for patient care.
authors.affiliation: Department of Radiation Therapy, Medical College of Ohio, Toledo, Ohio, 43699, USA.
authors.forename: K M
authors.initials: KM
authors.lastname: Ayyangar
authors.forename: T
authors.initials: T
authors.lastname: Pawlicki
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D006801:Humans; D010166:Palliative Care; D017785:Photons; D011878:Radiotherapy / Q000295:instrumentation; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted