NDLI: Investigation of a compact DOI-PET system for small animal imaging

Content Provider	IEEE Xplore Digital Library
Author	Chien-Min Kao Schmand, M. Gives, G. Xiaochuan Pan Nutt, R. Chin-Tu Chen
Copyright Year	2003
Description	Author affiliation: Dept. of Radiol., Chicago Univ., IL, USA (Chien-Min Kao)
Abstract	In this work, we experimentally investigate the resolution performance characteristics of a compact small-animal DOI-PET system. Conceptual design of this system employs sixteen 8/spl times/8 LSO/LYSO dual-layer DOI block detectors, with individual 2.1/spl times/2.1/spl times/10 mm/sup 3/ crystals. These detectors are arranged to form a 5 cm-radius detector ring to yield an intended 4.8 cm-radius field-of-view (FOV). As expected, our measurements reveal significant resolution degradation outside the center of the FOV due to a significant level of parallax errors arising from the proposed compact geometry. This resolution degradation, however, can be substantially reduced by use of an analytical sinogram restoration technique to yield uniform spatial resolution inside the FOV. This technique is computationally efficient; it can be incorporated as an integral part of a PET imager to achieve high-performance in a cost-effective manner.
Starting Page	1292
Ending Page	1297
File Size	2447785
Page Count	6
File Format	PDF
ISBN	0780376366
DOI	10.1109/NSSMIC.2002.1239556
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-11-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Animals Detectors Spatial resolution Positron emission tomography Degradation Technological innovation Geometry Redundancy Radiology Image resolution
Content Type	Text
Resource Type	Article

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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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