Monte Carlo derivation of AAPM TG-43 dosimetric parameters for GZP6 Co-60 HDR sources |
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| Authors: | Sanaz Hariri Tabrizi Alireza Kamali Asl Zohreh Azma |
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| Institution: | 1. Faculty of Health Sciences and Brain and Mind Research Institute, The University of Sydney, Sydney, NSW 2006, Australia;2. Division of Nuclear Medicine and Molecular Imaging, Geneva University Hospital, University of Geneva, Geneva, Switzerland;3. Wolfson Molecular Imaging Centre, MAHSC, The University of Manchester, Manchester M20 3LJ, UK;4. School of Mathematics, The University of Manchester, Alan Turing Building, Manchester, UK;5. King''s College London, Lambeth Wing, St Thomas'', SE1 7EH, UK;6. Montreal Neurological Institute, McGill University, Canada;1. Instituto de Física, Universidade Federal de Goiás, UFG 74001-970 Goiânia, GO, Brazil;2. Departamento de Física, FFCLRP, Universidade de São Paulo, 14040-901 Ribeirão Preto, SP, Brazil;3. Instituto de Física, Universidade Federal de Uberlândia, 38400-902 Uberlândia, MG, Brazil;1. Radiation Application Research School, Nuclear Science and Technology Research Institute, Tehran, Iran;2. Research Center for Molecular and Cellular Imaging, Tehran University of Medical Science, Tehran, Iran;3. Radiation Medicine Department, Shahid Beheshti University, Tehran, Iran;4. Department of Medical Physics and Biomedical Engineering, Tehran University of Medical Science, Tehran, Iran;2. Department of Radiology, Harvard Medical School, Boston, MA;3. The Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University, School of Medicine, Baltimore, MD;4. Department of Radiology, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand;5. J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL;1. Division of Internal Medicine, University of Arkansas for Medical Sciences, Little Rock, AR;2. Cochin Medical College, Kochi, India;3. Division of Hematology/Oncology, University of Arkansas for Medical Sciences and Central Arkansas Veterans Health System, Little Rock, AR;1. Department of Radiotherapy and Radiation Oncology, University Medical Center Goettingen, Goettingen, Germany;2. Department of Medical Statistics, University Medical Center Goettingen, Goettingen, Germany;3. Department of Gynecology and Obstetrics, University Medical Center Goettingen, Goettingen, Germany |
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| 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 60Co 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 60Co 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. |
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