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Proceedings Paper

Analytical SPECT reconstruction algorithm for helical cone-beam geometry using ray-driven technology
Author(s): Kangping Zhang; Junhai Wen; Cuifen Li; Rui Yang; Haixiang Dong; Zhengrong Liang
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Paper Abstract

Single photon emission computed tomography (SPECT) provides functional information of the interested organs. Such information is very helpful in the early detection of diseases. However, the resolution of SPECT is low. The cone-beam SPECT reconstruction can improve the photon density and spatial resolution of the reconstructed image. In practice, because of the data sufficiency and scanning efficiency, helical cone-beam geometry is preferred. The iterative helical cone-beam reconstruction is time-consuming; the analytical methods are considerably faster and more efficient in clinic. Due to the attenuation of gamma photons, the analytical SPECT reconstruction problem is more complicated. Attenuation should be compensated for to obtain quantitative results. In this paper, based on the Novikov's reconstruction formula and our Ray-driven Technology, we present an analytical SPECT reconstruction algorithm for helical cone-beam geometry using Ray-driven Technology. The simulation results demonstrate the accuracy and robustness of our method.

Paper Details

Date Published: 3 March 2012
PDF: 9 pages
Proc. SPIE 8313, Medical Imaging 2012: Physics of Medical Imaging, 83133V (3 March 2012); doi: 10.1117/12.910892
Show Author Affiliations
Kangping Zhang, Beijing Institute of Technology (China)
Junhai Wen, Beijing Institute of Technology (China)
Cuifen Li, Beijing Institute of Technology (China)
Rui Yang, Beijing Institute of Technology (China)
Haixiang Dong, Beijing Institute of Technology (China)
Zhengrong Liang, Stony Brook Univ. (United States)

Published in SPIE Proceedings Vol. 8313:
Medical Imaging 2012: Physics of Medical Imaging
Norbert J. Pelc; Robert M. Nishikawa; Bruce R. Whiting, Editor(s)

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