All items in are protected by copyright with all rights reserved unless otherwise indicated. The BJR supplement 25 reports that the peak-scatter factor data submitted to the supplement were unable to resolve difference with respect to beam energies.: Number of pages 188 ID Numbers Open Library OL22446719M ISBN 10 0905749383 Community Reviews (0) Feedback No community reviews have been submitted for this work.
#Bjr supplement 25 pdf series#
Series British Journal of Radiology - 25, BJR supplement - 25. The measured PSFs are compared to tabulated PSF and Normalized Peak Scatter Factors (NPSF) published in the British Journal of Radiology (BJR), supplement 25. This supplement is a revised and extended version of BJR supplement 17. The method is applied to Co-60, 6 MV, 10 MV, and 18 MV photon beams using water, polytyrene, and solid water phantoms. A practical method for measuring the PSF for megavoltage photon beams is developed. In addition, concerns debated among physicists regarding the consistency of tabulated values of the PSF in dosimetric references with the definition of the PSF are presented. Model validation is based on in-field commissioning data collected at the University of Florida, published out-of-field data from the BJR Supplement 25. Also, the evolution of the definition of the PSF is discussed by presenting the PSF definitions quoted in several dosimetric references. A brief background of some of the basic physics employed in external beam radiotherapy is given, illustrating some of the applications of the PSF in dosimetry. BJR Supplement- 1989 Central Axis Depth Dose Data, for X Radiations of Half Value Layers from 0.01 Mm.
In radiation dosimetry calculations, many functions are employed to achieve this goal, and the Peak Scatter Factor (PSF) is one of the fundamental functions used in dosimetry. Supplement 17 of the British Journal of Radiology is a survey of central-axis depth doses for radiotherapy machines, patterned largely on BJR Supplement 11 published some 11 years earlier. The aim of external beam radiotherapy is to deliver a prescribed dose to a target volume accurately and uniformly while sparing the surrounding healthy tissue.