PMID: 9420834Nov 1, 1995Paper

Attenuation compensation for cardiac single-photon emission computed tomographic imaging: Part 1. Impact of attenuation and methods of estimating attenuation maps

Journal of Nuclear Cardiology : Official Publication of the American Society of Nuclear Cardiology
M A KingT S Pan

Abstract

Attenuation is believed to be one of the major causes of false-positive cardiac single-photon emission computed tomographic (SPECT) perfusion images. This article reviews the physics of attenuation, the artifacts produced by attenuation, and the need for scatter correction in combination with attenuation correction. The review continues with a comparison of the various configurations for transmission imaging that could be used to estimate patient specific attenuation maps, and an overview of how these are being developed for use on multiheaded SPECT systems, including discussions of truncation, noise, and spatial resolution of the estimated attenuation maps. Ways of estimating patient specific attenuation maps besides transmission imaging are also discussed.

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Citations

Sep 14, 2004·Annals of Nuclear Medicine·Akihiro KojimaTakashi Ichihara
Apr 10, 2004·Annals of Nuclear Medicine·Akihiro KojimaNobutoku Motomura
Jan 26, 2008·European Journal of Nuclear Medicine and Molecular Imaging·Sarah J McQuaid, Brian F Hutton
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Jan 31, 2004·Journal of Nuclear Cardiology : Official Publication of the American Society of Nuclear Cardiology·Edward P Ficaro, James R Corbett
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