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Proceedings Paper

Attenuation compensation in mesh-domain OSEM SPECT reconstruction
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Paper Abstract

A new method for attenuation compensation (AC) in mesh-domain SPECT OSEM reconstruction using strip-area approximation (SAAC) is introduced and compared to single-ray AC (SRAC). SAAC uses the polygonal area of the intersection of a mesh element (ME) and a tube-of-response (TOR) for defining an effective length of photon transit and an effective attenuation coefficient. This approach to AC is compared to SRAC, which defines the effective length of photon transit as the intersection of a single ray and a ME and the effective attenuation coefficient as the mean along the ray path. Comparative quantitative and qualitative analysis demonstrated that SAAC outperformed SRAC in terms of reconstruction image accuracy and quality.

Paper Details

Date Published: 13 March 2009
PDF: 7 pages
Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 72583G (13 March 2009); doi: 10.1117/12.813750
Show Author Affiliations
Levon Vogelsang, Syracuse Univ. (United States)
Yao Lu, Syracuse Univ. (United States)
Bo Yu, China Three Gorges Univ. (China)
Andrzej Krol, Upstate Medical Univ., SUNY (United States)
Syracuse Univ. (United States)
Yuesheng Xu, Syracuse Univ. (United States)
Xiaofei Hu, Syracuse Univ. (United States)
David Feiglin, Upstate Medical Univ., SUNY (United States)
Syracuse Univ. (United States)
Edward Lipson, Syracuse Univ. (United States)
Upstate Medical Univ., SUNY (United States)


Published in SPIE Proceedings Vol. 7258:
Medical Imaging 2009: Physics of Medical Imaging
Ehsan Samei; Jiang Hsieh, Editor(s)

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