NDLI: A New Flexible Reconstruction Framework for Motion Correction in SPECT Imaging

Content Provider	IEEE Xplore Digital Library
Author	Schumacher, H. Fischer, B.
Copyright Year	1963
Abstract	Due to the long imaging times in SPECT, patient motion is inevitable and constitutes a serious problem for any reconstruction algorithm. The measured inconsistent projection data lead to reconstruction artifacts which can significantly affect the diagnostic accuracy of SPECT if not corrected. Among the most promising attempts for addressing this cause of artifacts is the so-called data-driven motion correction methodology, implemented, for example, in the OSEM scheme. At present, this algorithm is restricted to the exclusive use of a dual-head SPECT system with perpendicular heads and incorporating in a subset only projection data obtained between a patient movement. The utilization within other SPECT systems may lead to unsatisfactory results. In this note we present a new reconstruction framework which overcomes these two shortcomings. Within the new framework, the user may choose any set of projection for the reconstruction and the scheme works for any SPECT system. As a byproduct, the well-known EM and OSEM reconstruction schemes may be written in terms of the new framework and therefore are included in the theoretical considerations. The paper is supplemented by a large set of test examples, underscoring the potential power of the proposed novel approach. Using both an academic example and images from a double-head detector we studied the extent of defects induced by simulated motion and validated the new schemes.
Sponsorship	IEEE Nuclear and Plasma Sciences Society Computer Applications in Nuclear and Plasma Sciences (CANPS) Lawrence Berkeley Lab. Lawrence Livermore Nat. Lab. APS College of William and Mary Continuous Electron Beam Accelerator Facility NASA Defence Nuclear Agency Sandia National Laboratories Jet Propulsion Laboratory Brookhaven Nat. Lab. Lawrence Livermore Nat. Lab IEEE/NPPS Radiat. Effects Committee Defence Nuclear Agency/DoD Sandia National Laboratories/DOE Jet Propulsion Laboratory/NASA Phillips Lab./DoD
Starting Page	480
Ending Page	485
Page Count	6
File Size	920033
File Format	PDF
ISSN	00189499
Volume Number	54
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image reconstruction Reconstruction algorithms Motion detection Magnetic heads Testing Detectors Computational modeling Single photon emission computed tomography Optical computing Degradation SPECT Data-driven motion correction reconstruction algorithm
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Electrical and Electronic Engineering Nuclear Energy and Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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