Abstract

Optical computed tomography (CT) is one of the leading modalities for imaging gel dosimeters. In previous research, it was shown that a design could significantly reduce the volume of the refractive index baths that are commonly found in optical CT systems. The proposed scanner has been manufactured and is in process of being commissioned. The rays refract through the system and their paths are estimated using a ray-tracing simulator. Reconstruction is preformed through algebraic reconstruction technique and iterated using the FISTA-TV algorithm. A Sylgard®184 edge phantom was created to commission the scanner’s spatial resolution. The scanner is capable of a 0.929 mm−1 spatial resolution, although the spatial resolution is highly dependent on the number of iterations, and method of processing the edge spread function.

Details

Title
Preliminary commissioning of a prototype solid tank optical CT scanner for 3D radiation dosimetry
Author
Ogilvy, A 1 ; Collins, S 1 ; Guenter, M 2 ; Huang, D 2 ; Hare, W 2 ; Hilts, M 3 ; Jirasek, A 1 

 Department of Physics, University of British Columbia - Okanagan campus , Kelowna BC V1V 1V7 , Canada 
 Department of Mathematics, University of British Columbia - Okanagan campus , Kelowna BC V1V 1V7 , Canada 
 Medical Physics, BC Cancer - Kelowna , Kelowna BC V1Y 5L3 , Canada; Department of Physics, University of British Columbia - Okanagan campus , Kelowna BC V1V 1V7 , Canada 
First page
012036
Publication year
2023
Publication date
Nov 2023
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2890412729
Copyright
Published under licence by IOP Publishing Ltd. 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.