NDLI: Study on analytical system matrix constructions for a stationary multipinhole SPECT system

Content Provider	IEEE Xplore Digital Library
Author	Shih-Ying Chang Yu-Jung Tsai Ing-Tsung Hsiao
Copyright Year	2011
Description	Author affiliation: Dept Medical Imaging and Radiological Sciences, Chang Gung University, Tao-yuan, Taiwan (Shih-Ying Chang; Yu-Jung Tsai; Ing-Tsung Hsiao)
Abstract	A stationary multi-pinhole SPECT system without rotating the detectors is useful in molecular imaging of pre-clinical and dynamic study. In previous study, a voxel-driven method (RVM) for system matrix construction was used to calculate the system model for a static three-head multi-pinhole system. For reducing the artifacts caused by limited sampling angle, both sub-ray and sub-mask models in constructing the multipinhole system matrix were applied in the cost of computation time. In order to improve the computational efficiency, we applied a new projection model method (NPM) proposed previously to simplify the system matrix calculation while retaining the accuracy. Digital simulation data from GATE was used to evaluate the performance of the NPM in comparison with two other methods (RVM and conventional ray-driven method). The preliminary results show that NPM can generate more accurate projection data and reconstruction while with much less computation time as compared to RVM.
Starting Page	3680
Ending Page	3683
File Size	729590
Page Count	4
File Format	PDF
ISBN	9781467301183
ISSN	10823654
e-ISBN	9781467301206
DOI	10.1109/NSSMIC.2011.6153694
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-10-23
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Logic gates Image resolution Computational modeling Sensitivity Analytical models Image reconstruction
Content Type	Text
Resource Type	Article

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