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Absorbed dose perturbation caused by diodes for small field photon dosimetry
Author(s) -
Beddar A. S.,
Mason D. J.,
O'Brien P. F.
Publication year - 1994
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.597350
Subject(s) - dosimetry , diode , physics , optics , radiation , detector , radiation therapy , radiosurgery , photon , medical physics , nuclear medicine , optoelectronics , medicine , radiology
Uncertainties in dose measurements which may be considered acceptable for standard radiotherapy techniques may not be acceptable for radiosurgery or other precision radiotherapy techniques. One example of this type of uncertainty are the small perturbations to measured dose distributions which are caused by the use of diode detectors. In this article the effect of using diodes to measure small field penumbra is assessed and comments are made about diode orientation and diode construction.