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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.
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Details
1 Department of Physics, University of British Columbia - Okanagan campus , Kelowna BC V1V 1V7 , Canada
2 Department of Mathematics, University of British Columbia - Okanagan campus , Kelowna BC V1V 1V7 , Canada
3 Medical Physics, BC Cancer - Kelowna , Kelowna BC V1Y 5L3 , Canada; Department of Physics, University of British Columbia - Okanagan campus , Kelowna BC V1V 1V7 , Canada