High pitch helical CT reconstruction
Published in IEEE Transactions on Medical Imaging, 2021
Abstract
To avoid severe limited-view artifacts in reconstructed CT images, current multi-row detector CT (MDCT) scanners with a single x-ray source-detector assembly need to limit table translation speeds such that the pitch p (viz., normalized table translation distance per gantry rotation) is lower than 1.5. When p>1.5 , it remains an open question whether one can reconstruct clinically useful helical CT images without severe artifacts. In this work, we show that a synergistic use of advanced techniques in conventional helical filtered backprojection, compressed sensing, and more recent deep learning methods can be properly integrated to enable accurate reconstruction up to p=4 without significant artifacts for single source MDCT scans.
Recommended citation: Hayes, John W., et al. "High pitch helical CT reconstruction." IEEE Transactions on Medical Imaging 40.11 (2021): 3077-3088.
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