title: Monte Carlo simulation of intrinsic count rate performance of a scintillation camera for diagnostic images.
abstract: This paper describes Monte Carlo simulation of intrinsic count rate performance of a scintillation gamma camera. MCNP Monte Carlo code was employed to calculate pulse height spectrum and detector efficiency. A custom code written in Fortran language was then developed to simulate, by Monte Carlo method, the distortion in pulse height spectrum due to the pile-up effect for paralyzable and nonparalyzable systems. The results of the simulations, compared with the experimental measurement of count rate performance, showed a good agreement between the two different approaches.
authors.affiliation: Physics Department, School of Sciences, Tarbiat Moallem University of Sabzevar, P.O. Box 397, Sabzevar, Iran. amowlavi@sttu.ac.ir
authors.forename: Ali Asghar
authors.initials: AA
authors.lastname: Mowlavi
authors.forename: Mario
authors.initials: M
authors.lastname: de Denaro
authors.forename: Maria Rosa
authors.initials: MR
authors.lastname: Fornasier
authors.forename: Alireza
authors.initials: A
authors.lastname: Binesh
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D019544:Equipment Failure Analysis / Q000379:methods*; D015902:Gamma Cameras; D008962:Models, Theoretical; D009010:Monte Carlo Method; D011785:Quality Assurance, Health Care / Q000379:methods*; D011829:Radiation Dosage; D011877:Radionuclide Imaging / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity