title: A micro-computer based CT and digital fluorography system for radiotherapy simulators.
abstract: A low cost system designed to produce low resolution CT images from a radiotherapy treatment simulator is described. The system is based upon a standard micro-computer and operates using the simulator's image intensifier as the CT detector. The resulting images are intended to supply cross-sectional anatomical information appropriate for the application of inhomogeneity corrections to treatment plans for megavoltage radiotherapy of the thorax. Options for digital fluorography and hold-last-frame fluoroscopy are also described. Examples of clinical images are presented.
authors.affiliation: Regional Medical Physics Department, Newcastle General Hospital, Newcastle-upon-Tyne, UK.
authors.forename: C J
authors.initials: CJ
authors.lastname: Kotre
authors.forename: R M
authors.initials: RM
authors.lastname: Harrison
mesh_terms: D003198:Computer Simulation; D003199:Computer Systems; D003626:Data Display; D005471:Fluoroscopy / Q000379:methods; D006801:Humans; D008838:Microcomputers; D011856:Radiographic Image Enhancement / Q000379:methods; D011880:Radiotherapy Planning, Computer-Assisted; D012984:Software; D013690:Television; D014057:Tomography, X-Ray Computed; D014963:X-Ray Intensifying Screens