Application of the 'Spiking' method to the measurement of low dose radiation (≤ 1 Gy) using alanine dosimeters

Geso, M, Ackerly, T, Lim, S, Best, S, Gagliardi, F and Smith, C 2018, 'Application of the 'Spiking' method to the measurement of low dose radiation (≤ 1 Gy) using alanine dosimeters', Applied Radiation and Isotopes, vol. 133, pp. 111-116.


Document type: Journal Article
Collection: Journal Articles

Title Application of the 'Spiking' method to the measurement of low dose radiation (≤ 1 Gy) using alanine dosimeters
Author(s) Geso, M
Ackerly, T
Lim, S
Best, S
Gagliardi, F
Smith, C
Year 2018
Journal name Applied Radiation and Isotopes
Volume number 133
Start page 111
End page 116
Total pages 6
Publisher Pergamon Press
Abstract Alanine dosimeters are limited in radiotherapy by poor sensitivity at low doses ( < 5 Gy). A set of alanine dosimeters were 'spiked' with a large dose of radiation, (~30 Gy, 6 MV X-rays) and additional doses ranging between 0.5 and 10 Gy. The radical yield was measured by Electron Paramagnetic Resonance (EPR) spectroscopy, and after subtraction of the contribution from the "spike" dose, a linear correlation between the radiation dose and the area of the central EPR signal was obtained for doses between 0.5 and 10 Gy (regression value of 0.9890), and for the central peak's amplitude (regression value of 0.9895). Overall, this method is easy to perform, requires no complex EPR signal analysis, and offers much potential to extend the current usage of alanine dosimeters in radiotherapy.
Subject Atomic, Molecular, Nuclear, Particle and Plasma Physics not elsewhere classified
DOI - identifier 10.1016/j.apradiso.2018.01.003
Copyright notice © 2018 Elsevier Ltd
ISSN 0969-8043
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