GPU Acceleration of Compton Backscatter Image Reconstruction Algorithm
Abstract
In Compton backscatter imaging,the ray source and detectors are placed at the same side of object;we can reconstruct the object without rotation process.But Compton backscatter image reconstruction algorithm suffers high computation cost and long reconstruction time.According to the characteristics of OSEM reconstruction algorithm,we design proper parallel strategies for projection process and backprojection process to accelerate the algorithm.The results show that using these parallel strategies we can obtain a high accelerating ratio as well as a high quality image.
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