3 August 1984 An Iterative Spatial Algorithm For Three-Dimensional Reconstruction In Single Photon Emission Computed Tomography
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Abstract
Two major problems in the reconstruction of spatial distribution of radioisotope in single photon emission computed tomography (SPECT) are tissue attenuation and resolution degradation with distance. In order to describe the projection process in SPECT more accurately, a three-dimensional linear model which takes into consideration the medium attenuation effect and the point spread function (PSF) of the imaging system is presented. Based on this model, an iterative spatial reconstruction algorithms, i.e., the Spatially Modified Algebraic Reconstruction Technique (SMART) is proposed and tested by computer simulation and phantom study. Comparison of the result with other conventional SPECT algorithms indicates that SMART has better performance in attenuation effect compensation and discrimination of spatial features in phantom. Key Words: (1) Single photon emission computed tomography (2) Spatial iterative algorithm (3) linear model (4) evaluation of computer algorithms
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Yu-Shan Fong, Yu-Shan Fong, William G. Wee, William G. Wee, Stephen R. Thomas, Stephen R. Thomas, Wingfat R. Ip, Wingfat R. Ip, "An Iterative Spatial Algorithm For Three-Dimensional Reconstruction In Single Photon Emission Computed Tomography", Proc. SPIE 0515, Medical Images and Icons, (3 August 1984); doi: 10.1117/12.964794; https://doi.org/10.1117/12.964794
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