title: Improved radial dose function estimation using current version MCNP Monte-Carlo simulation: Model 6711 and ISC3500 125I brachytherapy sources.
abstract: Improved cross-sections in a new version of the Monte-Carlo N-particle (MCNP) code may eliminate discrepancies between radial dose functions (as defined by American Association of Physicists in Medicine Task Group 43) derived from Monte-Carlo simulations of low-energy photon-emitting brachytherapy sources and those from measurements on the same sources with thermoluminescent dosimeters. This is demonstrated for two 125I brachytherapy seed models, the Implant Sciences Model ISC3500 (I-Plant) and the Amersham Health Model 6711, by simulating their radial dose functions with two versions of MCNP, 4c2 and 5.
authors.affiliation: Vanderbilt Center for Radiation Oncology, Vanderbilt University, B-1003 TVC, Nashville, TN 5671, USA. dennis.duggan@vanderbilt.edu
authors.forename: Dennis M
authors.initials: DM
authors.lastname: Duggan
mesh_terms: D000465:Algorithms; D001918:Brachytherapy / Q000379:methods* / Q000592:standards; D003198:Computer Simulation; D006801:Humans; D007457:Iodine Radioisotopes / Q000032:analysis* / Q000627:therapeutic use*; D008297:Male; D008954:Models, Biological; D015233:Models, Statistical; D009010:Monte Carlo Method; D011471:Prostatic Neoplasms / Q000532:radiotherapy; D011874:Radiometry / Q000379:methods* / Q000592:standards; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted / Q000295:instrumentation / Q000379:methods* / Q000592:standards
chemical_list: D007457:Iodine Radioisotopes