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Energy response of agar‐alanine free radical dosimetry to therapeutic electron beams
Author(s) -
Ciesielski B.,
Reinstein L. E.,
Meek A. G.,
Wielopolski L.
Publication year - 1993
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 - 10.1118/1.597130
Subject(s) - dosimetry , alanine , electron , materials science , medical physics , nuclear medicine , physics , medicine , chemistry , nuclear physics , biochemistry , amino acid
Calculations of the energy response of an agar‐alanine phantom dosimeter (AAPD) to electrons in the energy range of 0.15–20 MeV together with experimental results at 16 MeV are presented. It is shown that the sensitivity of the EPR dosimeter (EPR signal/Gray) is independent of alanine crystal size and varies less than 2%, in the electron energy range indicated. Thus, the measured free radical density distribution may be used directly as an indication of the absorbed dose distribution in an irradiated phantom.