Ultrasound evaluation of polymer gel dosimeters

Mather, Melissa L., Whittaker, Andrew K. and Baldock, Clive (2002) Ultrasound evaluation of polymer gel dosimeters. Physics In Medicine And Biology, 47 9: 1449-1458. doi:10.1088/0031-9155/47/9/302

Author Mather, Melissa L.
Whittaker, Andrew K.
Baldock, Clive
Title Ultrasound evaluation of polymer gel dosimeters
Journal name Physics In Medicine And Biology   Check publisher's open access policy
ISSN 0031-9155
Publication date 2002-05-07
Year available 2002
Sub-type Article (original research)
DOI 10.1088/0031-9155/47/9/302
Open Access Status Not yet assessed
Volume 47
Issue 9
Start page 1449
End page 1458
Total pages 10
Place of publication Bristol
Publisher Institute of Physics Publishing Ltd
Language eng
Abstract A new method for the evaluation of radiotherapy 3D polymer gel dosimeters has been developed using ultrasound to assess the significant structural changes that occur following irradiation of the dosimeters. The ultrasonic parameters of acoustic speed of propagation, attenuation and transmitted signal intensity were measured as a function of absorbed radiation dose. The dose sensitivities for each parameter were determined as 1.8 x 10(-4) s m(-1) Gy(-1), 3.9 dB m(-1) Gy(-1) and 3.2 V-1 Gy(-1) respectively. All parameters displayed a strong variation with absorbed dose that continued beyond absorbed doses of 15 Gy. The ultrasonic measurements demonstrated a significantly larger dynamic range in dose response curves than that achieved with previously published magnetic resonance imaging (MRI) dose response data. It is concluded that ultrasound shows great potential as a technique for the evaluation of polymer gel dosimeters.
Keyword Engineering, Biomedical
Radiology, Nuclear Medicine & Medical Imaging
Radiation-dose Distributions
Poly(2-hydroxyethyl Methacrylate) Hydrogels
Ray Computed-tomography
Water Sorption
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Australian Institute for Bioengineering and Nanotechnology Publications
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Citation counts: TR Web of Science Citation Count  Cited 64 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 72 times in Scopus Article | Citations
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Created: Mon, 13 Aug 2007, 22:58:27 EST