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Polymer gel dosimetry using x-ray computed tomography: Investigation of the effect of reconstruction technique

Citation

Hindmarsh, J and Fulton, R and Oliver, L and Baldock, C, Polymer gel dosimetry using x-ray computed tomography: Investigation of the effect of reconstruction technique, 6th International Conference on 3D Radiation Dosimetry (IC3DDose 2010), South Carolina, USA, 22-26 August 2010, Journal of Physics: Conference Series, 250 (1), pp. 365-369. ISSN 1742-6588 (2010) [Refereed Conference Paper]


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Copyright 2010 IOP Publishing Ltd.

DOI: doi:10.1088/1742-6596/250/1/012073

Abstract

X-ray computed tomography (XCT) imaging of gel dosimeters is a promising technique that may make gel dosimetry more practical for medical physicists to use clinically. One of the issues limiting its use is the dose resolution of the system, which is determined by the system's noise and ability to resolve low contrast objects. Alternative reconstruction of CT data is shown to approximately halve the minimum detectable change in signal and increase, by up to double, the signal to noise ratio for small low contrast objects when compared with the vendor reconstruction. This has the potential to reduce the number of averages required in XCT gel dosimetry imaging protocols as well as improving dose resolution.

Item Details

Item Type:Refereed Conference Paper
Keywords:CT data, gel dosimeter, polymer gel dosimetry, X-ray computed tomography
Research Division:Physical Sciences
Research Group:Other Physical Sciences
Research Field:Medical Physics
Objective Division:Health
Objective Group:Other Health
Objective Field:Health not elsewhere classified
Author:Baldock, C (Professor Clive Baldock)
ID Code:116161
Year Published:2010
Deposited By:Research Operations
Deposited On:2017-05-03
Last Modified:2017-06-21
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