Line-Source Based X-Ray Tomography

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Date
2009-04-27
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Publisher
Hindawi
Abstract

Current computed tomography (CT) scanners, including micro-CT scanners, utilize a point x-ray source. As we target higher and higher spatial resolutions, the reduced x-ray focal spot size limits the temporal and contrast resolutions achievable. To overcome this limitation, in this paper we propose to use a line-shaped x-ray source so that many more photons can be generated, given a data acquisition interval. In reference to the simultaneous algebraic reconstruction technique (SART) algorithm for image reconstruction from projection data generated by an x-ray point source, here we develop a generalized SART algorithm for image reconstruction from projection data generated by an x-ray line source. Our numerical simulation results demonstrate the feasibility of our novel line-source based x-ray CT approach and the proposed generalized SART algorithm.

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Citation
Deepak Bharkhada, Hengyong Yu, Hong Liu, Robert Plemmons, and Ge Wang, “Line-Source Based X-Ray Tomography,” International Journal of Biomedical Imaging, vol. 2009, Article ID 534516, 8 pages, 2009. doi:10.1155/2009/534516