Speedup OS-EM Image Reconstruction by PC Graphics Card Technologies for Quantitative SPECT with Varying Focal-Length Fan-Beam Collimation

In the paper, we present a new hardware acceleration method to speedup the ordered-subsets expectation-maximization (OS-EM) algorithm for quantitative SPECT (single photon emission computed tomography) image reconstruction with varying focal-length fan-beam (VFF) collimation. By utilizing the geomet...

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Bibliographische Detailangaben
Veröffentlicht in:	IEEE transactions on nuclear science. - 1988. - 52(2005), 5 Pt 1 vom: 12. Okt., Seite 1274-1280
1. Verfasser:	Wang, Zigang (VerfasserIn)
Weitere Verfasser:	Han, Guoping, Li, Tianfang, Liang, Zhengrong
Format:	Aufsatz
Sprache:	English
Veröffentlicht:	2005
Zugriff auf das übergeordnete Werk:	IEEE transactions on nuclear science
Schlagworte:	Journal Article


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520			\|a In the paper, we present a new hardware acceleration method to speedup the ordered-subsets expectation-maximization (OS-EM) algorithm for quantitative SPECT (single photon emission computed tomography) image reconstruction with varying focal-length fan-beam (VFF) collimation. By utilizing the geometrical symmetry of VFF point-spread function (PSF), compensation for object-specific attenuation and system-specific PSF are accelerated using currently available PC video/graphics card technologies. A ten-fold acceleration of quantitative SPECT reconstruction is achieved
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