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- W3029806543 abstract "ObjectiveTo simulate and calculate the dosimetric parameters of the GZP 60Co source that has been clinically used in high-dose-rate brachytherapy.MethodsThe EGSnrc Monte Carlo software was used to simulate and calculate the dosimetric parameters of a well known BEBIG 60Co source (Co0.A86). The results were compared with the actual parameters to verify the feasibility of this method. A Monte Carlo model of the GZP 60Co source for high-dose-rate brachytherapy was established to simulate and calculate its dosimetric parameters in the same way.ResultsFor the BEBIG 60Co source, the results were well accorded with the standard. The air-kerma strength per unit activity (SK/A) and dose rate constant (Λ) deviated from the standard by 0.2% and 1.0%, respectively. The curves of the radial dose function gL (r) and the anisotropy function F (r, θ) fit well. For the GZP 60Co source, the SK/A and Λvalues were calculated as 3.011×10-7 cGycm2h-1Bq-1 and 1.118 cGyh-1U-1 in channel 1&2 and 3.002×10-7 cGycm2h-1Bq-1 and 1.110 cGyh-1U-1 in channel 3. The gL (r), F (r, θ), and dose rate per unit air-kerma strength in a liquid water phantom were listed as the American Association of Physicists in Medicine recommended.ConclusionsThe results can be used in planning system and quality control for the GZP 60Co source.Key words: Brachytherapy; 60Co source; Dosimetric parameters; Monte Carlo simulation" @default.
- W3029806543 created "2020-06-05" @default.
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- W3029806543 date "2016-05-15" @default.
- W3029806543 modified "2023-09-23" @default.
- W3029806543 title "A Monte Carlo-based dosimetric study of the GZP 60Co source" @default.
- W3029806543 doi "https://doi.org/10.3760/cma.j.issn.1004-4221.2016.05.015" @default.
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