PMID: 15357189Sep 11, 2004Paper

An evaluation of the AAPM-TG43 dosimetry protocol for I-125 brachytherapy seed

Physics in Medicine and Biology
Paul Mobit, Iulian Badragan

Abstract

The EGSnrc Monte Carlo system has been used to calculate the dose distributions from 125I radioactive seeds (model 6711). The results showed that the agreement between EGSnrc and the American Association of Physicists in Medicine Task Group Report 43 (AAPM-TG43) dosimetry protocol is generally within +/-15% for radial distances less than 1.0 cm in both the transverse axis and longitudinal axis of the source. For radial distances between 1.0 and 2.5 cm the agreement between Monte Carlo simulations and the AAPM-TG43 dosimetry protocol is within +/-20%. In the longitudinal axis of the source the difference between Monte Carlo simulations and the AAPM-TG43 dosimetry is up to 40% for radial distances greater than 2.5 cm. The agreement between the EGSnrc/Monte Carlo simulation and the AAPM-TG43 dosimetry protocol improved significantly when recently published data of the anisotropic function were implemented (Weaver 1998 Med. Phys. 25 2271-8). The difference between Monte Carlo simulations and the AAPM-TG43 dosimetry protocol is not more than +/-10% in the transverse axis of the source up to a radius of 2.5 cm. The EGSnrc Monte Carlo simulation and the AAPM-TG43 with the Weaver anisotropic data were also used to investigate the diffe...Continue Reading

Citations

Mar 8, 2012·Radiation Oncology·Silke B SchwarzFriedrich-Wilhelm Kreth
Jan 28, 2014·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Tomoyuki HasegawaKazushige Hayakawa
Sep 4, 2014·Reports of Practical Oncology and Radiotherapy : Journal of Greatpoland Cancer Center in Poznań and Polish Society of Radiation Oncology·Berkay Camgöz, Mehmet N Kumru
Jan 10, 2012·Brachytherapy·Imad JaradatIbrahim Nawaiseh
May 9, 2013·Journal of Applied Clinical Medical Physics·Mehdi ZehtabianAli Meigooni
Sep 11, 2004·Physics in Medicine and Biology·Paul Mobit, Iulian Badragan

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