PMID: 9533137Apr 9, 1998Paper

An alternative beam quality index for medium-energy x-ray dosimetry

Physics in Medicine and Biology
K E Rosser

Abstract

To determine absorbed dose to water it is essential that the radiation quality of the x-ray beam is known accurately. The unique method of defining the beam quality is to acquire a detailed knowledge of the photon spectrum at the point of measurement in water, but this is impractical. The aim of this work was to investigate a quality index that uniquely defines the ratio of mass-energy absorption coefficients of water to air at 2 cm deep in water ([(mu en/rho)w/a]z = 2,phi). Three parameters, HVL, mean energy at 2 cm deep in water and the ratio of the doses at 2 and 5 cm deep in water (D2/D5) were investigated as functions of [(mu en/rho)w/a]z = 2,phi. The quality index that best defines [(mu en/rho)w/a]z = 2,phi is the ratio of doses at 2 and 5 cm depth in water.

Citations

Sep 5, 2008·The British Journal of Radiology·H-M Kramer, H-J Selbach
May 23, 2008·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)·U ChicaA M Lallena
Aug 1, 2015·The British Journal of Radiology·Maria M Aspradakis, Paolo Zucchetti
Jul 7, 2001·Medical Physics·C M MaUNKNOWN American Association of Physicists in Medicine
Mar 15, 2014·Cadernos de saúde pública·Armando Henrique NormanJane Macnaughton
Jun 17, 2008·Physics in Medicine and Biology·L A de Prez, J A de Pooter
Mar 4, 2014·Physics in Medicine and Biology·Robin HillClive Baldock
Aug 12, 1999·Physics in Medicine and Biology·F VerhaegenY Namito
Nov 13, 2008·Physics in Medicine and Biology·U ChicaA M Lallena
Jan 4, 2021·Radiation and Environmental Biophysics·Reza ShamsabadiBehnam Azadegan

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