Abstract
The beam quality correction factor and the perturbation factor pQ, commonly considered in dosimetry with ionization chambers, were calculated for the
NE2571 and the Standard Imaging A19 and A12S chambers, using the Monte Carlo simulation
code PENELOPE. For the NE2571 chamber, the values of obtained are in very good agreement with those found in previous works by Wulff et al.
and Muir and Rogers with the code EGSnrc and also with the experimental results summarized
in the NCS code of practice. For pQ, a difference of ∼0.4% has been found between our results and those obtained with
EGSnrc for 60Co and this difference increases slightly with values. These factors have been calculated also for the A19 and A12S chambers of
Standard Imaging. The values of show reasonable agreement with those recently calculated by Muir and Rogers and the
measurements of McEwen.
Keywords
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Article info
Publication history
Published online: January 25, 2012
Accepted:
January 5,
2012
Received in revised form:
December 31,
2011
Received:
February 17,
2011
Identification
Copyright
© 2012 Associazione Italiana di Fisica Medica. Published by Elsevier Inc. All rights reserved.
