X-ray inspection systems play a critical role in many non-destructive testing and security applications, with systems typically measuring attenuation during transmission along straight-line paths connecting sources and detectors. Computed tomography (CT) systems can provide higher-quality images than single- or dual-view systems, but the need to measure many projections through the scene increases ... read moresystem complexity and cost. We seek to maximize the image quality of sparse-view (few-view) systems by combining attenuation data with measurements of Compton-scattered photons, that deflect after scattering and arrive at detectors via broken ray paths that provide additional sampling of the scene. The work below presents experimental validation of a singlescatter forward model for Compton-scatter data measured with energy-resolving detectors, and demonstrates a reconstruction algorithm that combines both attenuation and scatter measurements. The results suggest that including Compton-scattered data in the reconstruction process can improve image quality for few-view systems. Copyright 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)read less
Abdulla Desmal, Brian H. Tracey, Hamideh Rezaee, Eric L. Miller, Jeffrey R. Schubert, Jeff Denker, Aaron Couture, "Sparse view Compton scatter tomography with energy resolved data: experimental and simulation results", Proc. SPIE 10187, Anomaly Detection and Imaging with X-Rays (ADIX) II, 1018707 (1 May 2017); doi: 10.1117/12.2266688; http://dx.doi.org/10.1117/12.2266688