PMID: 11930914Apr 5, 2002Paper

Monte Carlo calculation of nine megavoltage photon beam spectra using the BEAM code

Medical Physics
Daryoush Sheikh-Bagheri, D W O Rogers

Abstract

A recent paper analyzed the sensitivity to various simulation parameters of the Monte Carlo simulations of nine beams from three major manufacturers of commercial medical linear accelerators, ranging in energy from 4-25 MV. In this work the nine models are used: to calculate photon energy spectra and average energy distributions and compare them to those published by Mohan et al. [Med. Phys. 12, 592-597 (1985)]; to separate the spectra into primary and scatter components from the primary collimator, the flattening filter and the adjustable collimators; and to calculate the contaminant-electron fluence spectra and the electron contribution to the depth-dose curves. Notwithstanding the better precision of the calculated spectra, they are similar to those calculated by Mohan et al. The three photon spectra at 6 MV from the machines of three different manufacturers show differences in their shapes as well as in the efficiency of bremsstrahlung production in the corresponding target and filter combinations. The contribution of direct photons to the photon energy fluence in a 10 x 10 field varies between 92% and 97%, where the primary collimator contributes between 0.6% and 3.4% and the flattening filter contributes between 0.6% and ...Continue Reading

References

May 1, 1976·Medical Physics·R Nath, R J Schulz
Jan 1, 1990·Medical Physics·J R PaltaN Suntharalingam
May 1, 1986·Medical Physics·S D AhujaE D Slessinger
Nov 1, 1983·Medical Physics·P H HuangB E Bjärngard
Nov 1, 1984·Medical Physics·J BrownridgeN Yeh
May 1, 1981·Medical Physics·P H HuangB E Bjärngard
Apr 1, 1995·Physics in Medicine and Biology·C R BakerN M Spyrou
May 1, 1995·Medical Physics·D W RogersT R Mackie
Mar 17, 1999·Medical Physics·B A FaddegonD L Mason
Dec 10, 1999·Medical Physics·G M MoraD W Rogers
Dec 1, 2000·Medical Physics·D Sheikh-BagheriJ P Seuntjens
Apr 5, 2002·Medical Physics·Daryoush Sheikh-Bagheri, D W O Rogers

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Citations

Oct 31, 2009·Australasian Physical & Engineering Sciences in Medicine·T KairnA L Fielding
Sep 10, 2008·Medical & Biological Engineering & Computing·H M Garnica-Garza
Dec 19, 2012·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·M AtarodA Azarnoosh
Jun 5, 2012·Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)·K AsnaashariMostafa Heydarian
Nov 5, 2003·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Christian ScholzThomas Bortfeld
Mar 31, 2009·Radiation Protection Dosimetry·A Martín-MartínJ M Martí-Climent
Mar 30, 2013·Radiation Protection Dosimetry·Mostafa KhosraviBehnam Amiri
Sep 12, 2008·Health Physics·Peter J Biggs, John R Styczynski
Jun 9, 2007·Medical Physics·Amit SawantYoucef El-Mohri
Oct 1, 2009·Biomedical Imaging and Intervention Journal·S-T Chiu-Tsao, Mf Chan
Apr 19, 2011·Journal of Neurosurgery·Maria Mamalui-HunterRobert E Drzymala
Jul 1, 2010·Journal of Medical Physics·Tomohiro ShimozatoYasunori Obata
Nov 10, 2010·Nihon Hoshasen Gijutsu Gakkai zasshi·Satoshi Kitou
Mar 3, 2011·Medical Physics·Stephen F KryMichael T Gillin
May 16, 2006·Medical Physics·Khaled AljarrahSteve B Jiang
Dec 13, 2006·Medical Physics·Stephen F KryMohammad Salehpour
Oct 12, 2007·Medical Physics·Stephen F KryMohammad Salehpour
May 22, 2008·Medical Physics·Philip VialClive Baldock
Jun 30, 2005·Medical Physics·Antonio Lopez MedinaMaria C Carrion
Sep 13, 2006·Medical Physics·I Kawrakow, B R B Walters
Apr 19, 2007·Medical Physics·Liang LiangIndrin J Chetty

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