Low frequency recovery  in 16cm coverage axial multi-detector computed tomography

Stanislav Žabić; Zhicong Yu; Wenjing Cao; Lu Wang

doi:10.1117/12.2534681

28 May 2019 Low frequency recovery in 16cm coverage axial multi-detector computed tomography

Stanislav Žabić, Zhicong Yu, Wenjing Cao, Lu Wang

Proceedings Volume 11072, 15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine; 110720V (2019) https://doi.org/10.1117/12.2534681
Event: Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, 2019, Philadelphia, United States

Abstract

Multiple CT vendors have released clinical multi-detector (MD) computed tomography (CT) systems with 16cm coverage. Axial CT for voxels outside the acquisition plane does not satisfy a fundamental completeness condition, which leads to so called cone-beam artifacts. This paper revisits the iterative filtered back-projection (FBP) algorithm from 2008 and analyzes it in the context of Brerman iterations. Also, we propose a one application of this algorithm along with a recently published filtering orthogonal to the acquisition plane as a pragmatic way to considerably reduce the cone-beam artifacts in axial CT scans with high coverage.

Citation Download Citation

Stanislav Žabić, Zhicong Yu, Wenjing Cao, and Lu Wang "Low frequency recovery in 16cm coverage axial multi-detector computed tomography", Proc. SPIE 11072, 15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, 110720V (28 May 2019); https://doi.org/10.1117/12.2534681

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