PMID: 11339761May 8, 2001Paper

Monte Carlo calculations of AAPM Task Group Report No. 43 dosimetry parameters for the MED3631-A/M125I source

Medical Physics
Mark J Rivard

Abstract

Brachytherapy dosimetry parameters for MED3631-A/M 125I sources have been determined in accordance with the AAPM Task Group No. 43 (TG-43) dosimetry protocol. These data were calculated using the *F8 tally from the MCNP4B2 Monte Carlo radiation transport code with the DLC-189 cross-section libraries. Due to motion of the 125I resin beads and gold-copper markers within the capsule, parameters such as the geometry function, radial dose function, dose rate constant, and anisotropy function were examined with the beads and markers having either "realistic" or "ideal" positions; the realistic position was a weighted combination of "vertical" and "diagonal" capsule orientations. The dose rate constants for the realistic and ideal geometries, lambda99std(realistic) and lambda99std(ideal) were 1.066 and 1.067 cGy h(-1) U(-1), respectively, which were within uncertainties of measured values by Wallace and Fan [Med. Phys. 26, 1925-1931 (1999)] and Li et al. [Med. Phys. 27, 1275-1280 (2000)], 1.06 and 1.067 cGy h(-1) U(-1), respectively. The calculated reference dose rate at r0= 1 and theta0= 90 degrees for the realistic source geometry was 0.7% less than for the ideal source geometry. The anisotropy constants, phian(realistic), for the r...Continue Reading

References

Nov 26, 1998·Medical Physics·R E Wallace, J J Fan
Nov 26, 1998·Medical Physics·J G WierzbickiV E Arterbery
Oct 3, 1999·Medical Physics·R E Wallace, J J Fan

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Citations

Jan 15, 2013·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·S Hamed HosseiniMahdi Sadeghi
Jan 5, 2002·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·M J Rivard
Aug 31, 2002·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Mark J Rivard
Aug 31, 2002·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Keith T Sowards, Ali S Meigooni
Mar 19, 2004·Australasian Radiology·Peter MetcalfeChris Fox
Oct 10, 2008·Medical Physics·R E P Taylor, D W O Rogers
Jul 17, 2010·Medical Physics·Pooneh SaidiClaudio Tenreiro
Jul 27, 2012·Medical Physics·Sami HissoinyLuc Beaulieu
Feb 16, 2006·Medical Physics·Omar Chibani, Jeffrey F Williamson
Aug 24, 2011·Medical Physics·Sami HissoinyJean-François Carrier
May 8, 2001·Medical Physics·B H HeintzJ M Hevezi
Aug 14, 2008·Medical Physics·Christopher S Melhus, Mark J Rivard
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
Sep 5, 2014·Medical Physics·Prakash AryalMark J Rivard
Nov 4, 2008·Medical Physics·Bruce R ThomadsenAli S Meigooni
May 23, 2006·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Ali S MeigooniRafiq A Koona
Feb 28, 2002·Medical Physics·Gordon H Chan, William V Prestwich
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Jul 1, 2008·Medical Physics·Christopher S Melhus, Mark J Rivard

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