title: Monte Carlo derivation of AAPM TG-43 dosimetric parameters for GZP6 Co-60 HDR sources.
abstract: Cobalt 60 source is generally available on high dose rate (HDR) afterloading equipment especially for treatment of gynecological lesions. The GZP6 remote afterloader (Nuclear Power Institute of China) utilizes (60)Co sources for treatment of intracavitary and intraluminal malignancies. In this study, the AAPM TG-43 dosimetric parameters of three sources in GZP6 system have been studied using MCNP4C Monte Carlo (MC) code; and the results are compared with other available (60)Co HDR sources. The presented parameters consist of air kerma strength, dose rate constant, radial dose function and anisotropy function. They show less than 1% uncertainty. The TG-43 based dosimetry data can be used not only to validate the dedicated treatment planning software (TPS), but also to introduce new complementary software to enhance the system performance in gynecological treatments.
authors.affiliation: Radiation Medicine Engineering Department, Shahid Beheshti University, Tehran, Iran. S.Hariri@mail.sbu.ac.ir
authors.forename: Sanaz Hariri
authors.initials: SH
authors.lastname: Tabrizi
authors.forename: Alireza Kamali
authors.initials: AK
authors.lastname: Asl
authors.forename: Zohreh
authors.initials: Z
authors.lastname: Azma
mesh_terms: D016880:Anisotropy; D003037:Cobalt Radioisotopes / Q000627:therapeutic use; D009010:Monte Carlo Method; D011829:Radiation Dosage; D011874:Radiometry; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted / Q000379:methods*; D012984:Software; D035501:Uncertainty
chemical_list: D003037:Cobalt Radioisotopes