NDLI: Compensation of acquisition variations in respiratory-gated SPECT with joint statistical reconstruction

Content Provider	IEEE Xplore Digital Library
Author	Wenyuan Qi Yongyi Yang Wernick, M.N. Pretorius, P.H. King, M.A.
Copyright Year	2015
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Illinois Inst. of Technol., Chicago, IL, USA (Wenyuan Qi; Yongyi Yang; Wernick, M.N.) \|\| Med. Sch., Dept. of Radiol., Univ. of Massachusetts, Worcester, MA, USA (Pretorius, P.H.; King, M.A.)
Abstract	In respiratory-gated cardiac SPECT with amplitude binning, the acquired data counts can vary greatly both between respiratory gates and among acquisition angles within each gate, which would lead to artifacts in reconstruction if not properly accounted for. In this work, we investigate a joint statistical reconstruction approach in which the different respiratory gates are described with respect to a common reference gate and the variation in the acquired data is compensated according to the acquisition time at each acquisition angle and respiratory gate. In the experiment, we demonstrated this approach with both simulated NCAT imaging (for quantitative evaluation) and a set of clinical acquisition. The results show that the proposed approach can further improve the reconstruction accuracy of the myocardium when compared to a post-reconstruction motion-compensation scheme developed previously.
Starting Page	1192
Ending Page	1195
File Size	551296
Page Count	4
File Format	PDF
ISBN	9781479923748
DOI	10.1109/ISBI.2015.7164086
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-04-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image reconstruction Logic gates Single photon emission computed tomography Myocardium Joints Data models join statistical reconstruction Respiratory-gated SPECT limited-angle artifact
Content Type	Text
Resource Type	Article

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