Systematic variations in polymer gel dosimeter calibration due to container influence and deviations from water equivalence
Taylor, M.L. , Franich, R.D. , Johnston, P.N. , Millar, R.M. , & Trapp, J.V. (2007) Systematic variations in polymer gel dosimeter calibration due to container influence and deviations from water equivalence. Physics in Medicine and Biology, 52(13), pp. 3991-4005.
There are a number of gel dosimeter calibration methods in contemporary usage. The present study is a detailed Monte Carlo investigation into the accuracy of several calibration techniques. Results show that for most arrangements the dose to gel accurately reflects the dose to water, with the most accurate method involving the use of a large diameter flask of gel into which multiple small fields of varying dose are directed. The least accurate method was found to be that of a long test tube in a water phantom, coaxial with the beam. The large flask method is also the most straightforward and least likely to introduce errors during setup, though, to its detriment, the volume of gel required is much more than other methods.
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|Item Type:||Journal Article|
|Keywords:||gel dosimeter calibration, water phantom|
|Subjects:||Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OTHER PHYSICAL SCIENCES (029900) > Medical Physics (029903)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
Past > Schools > Physics
|Copyright Owner:||Copyright 2007 Institute of Physics|
|Deposited On:||06 Oct 2010 08:13|
|Last Modified:||29 Feb 2012 23:52|
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