Effects of number of views, cone angle, detector bit depth, and projection noise level on the SNR in cone-beam reconstruction

Roger H. Johnson; Xiaoyi Wu; Paul S. Cho

doi:10.1117/12.237796

11 April 1996 Effects of number of views, cone angle, detector bit depth, and projection noise level on the SNR in cone-beam reconstruction

Roger H. Johnson, Xiaoyi Wu, Paul S. Cho

Author Affiliations +

Proceedings Volume 2708, Medical Imaging 1996: Physics of Medical Imaging; (1996) https://doi.org/10.1117/12.237796
Event: Medical Imaging 1996, 1996, Newport Beach, CA, United States

Abstract

Three-dimensional, conebeam image reconstruction from planar, transmitted x-ray projections is the most dose-efficient method for computed tomography. A number of factors, including the number of projections acquired, the cone angle subtended by the detector, the detector bit- depth, and the amount of noise in the projections, influence the quality of the reconstruction. Using simulations, we investigate the effects of these parameters on the signal-to-noise level attainable using the Feldkamp algorithm for conebeam reconstruction.

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Roger H. Johnson, Xiaoyi Wu, and Paul S. Cho "Effects of number of views, cone angle, detector bit depth, and projection noise level on the SNR in cone-beam reconstruction", Proc. SPIE 2708, Medical Imaging 1996: Physics of Medical Imaging, (11 April 1996); https://doi.org/10.1117/12.237796

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