Abstract

Normoxic Polyacrylamide Gels, or nPAGs, are 3D gel dosimeters that measure dose through the process of radiation-induced polymerization. Two nPAG formulae are DEFGEL and PAGAT, which are very similar, but differ mainly due to different weight fractions of monomers. The dosimetric resolutions of the two formulae when paired with a Spin-Echo (SE) MRI sequence and a monoexponential fit were compared over a range of 0-15 Gy. It was found that in the dose range 0-6 Gy the PAGAT formula generally showed a much finer dose resolution, while the DEFGEL formula showed a finer resolution from 8-15 Gy.

Details

Title
Dosimetric comparison of DEFGEL and PAGAT formulae paired with an MRI acquisition
Author
Matrosic, C 1 ; McMillan, A 2 ; Holmes, J 2 ; Bednarz, B 1 ; Culberson, W 1 

1  The University of Wisconsin School of Medicine and Public Health, University of Wisconsin -Madison, Department of Medical Physics, Madison, WI 
2  The University of Wisconsin School of Medicine and Public Health, University of Wisconsin -Madison, Department of Radiology, Madison, WI 
Publication year
2017
Publication date
May 2017
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1088/1742-6596/847/1/012012
ProQuest document ID
2574771518
Copyright
© 2017. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.