NDLI: A New Architecture for Pixellated solid state gamma camera used in nuclear medicine

Content Provider	IEEE Xplore Digital Library
Author	Guerin, L. Verger, L. Rebuffel, V. Monnet, O.
Copyright Year	2006
Description	Author affiliation: MINATEC Recherches Technologiques, LETI-CEA, Grenoble (Guerin, L.; Verger, L.; Rebuffel, V.; Monnet, O.)
Abstract	The general object of the present publication is to provide a novel technique for acquisition and reconstruction of planar or tomographic images obtained by gamma camera. The objective is to overcome sensitivity - spatial resolution tradeoff of conventional Anger gamma camera. In this framework, the future generation of solid state gamma camera will take benefit of recent CdZnTe (CZT) detector performances. Previous works show that pixellated CZT detectors have high energy resolution, good detection efficiency and high intrinsic spatial resolution. Moreover, these detectors provide important additional information: the depth of interaction (DOI). In this paper, we present HiSenstrade (High Sensitivity) architecture: an original architecture of collimator associated to CZT pixellated detector that takes advantages of such performances and particularly DOI information. First, we detail the experimental results of DOI accuracy on a 5 mm thick CZT detector. Second, we present the validation of the simulation tool (SINDBAD), in order to estimate performances combining new architecture and new solid state detectors. Third, we describe an adapted iterative reconstruction using the DOI information to improve image quality. At last, preliminary results of HiSens architecture performances are presented.
Starting Page	3670
Ending Page	3674
File Size	337670
Page Count	5
File Format	PDF
ISBN	1424405602
ISSN	10957863
DOI	10.1109/NSSMIC.2006.353789
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-10-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Solid state circuits Cameras Nuclear medicine Image reconstruction Spatial resolution Tomography Nuclear power generation Gamma ray detection Gamma ray detectors Energy resolution image reconstruction Single photon emission imaging SPECT CZT pixellated detectors collimation HiSens architecture DOI measurement
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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