NDLI: Randoms Mean Value Estimation with Exact Method for Ring PET Scanner

Content Provider	IEEE Xplore Digital Library
Author	Chen, M. Panin, V.Y. Casey, M.E.
Copyright Year	2006
Description	Author affiliation: Siemens Molecular Imaging, Knoxville, TN (Chen, M.; Panin, V.Y.; Casey, M.E.)
Abstract	Techniques for randoms mean value estimation from noisy random data were examined for the case of radioactivity concentration unevenly distributed in the trans-axial field of view (FOV) for ring PET scanners. The randoms mean values are required data in order to apply ordinary Poisson reconstruction algorithm. Then noise contribution from random data must be eliminated. Current randoms mean value estimation technique we used is based on fan-sum approximation approach. This methods produces biased random mean value estimation toward the edge of the trans-axial FOV in the case of non-uniformly distributed radioactivity concentration. An exact Defrise's method was examined in this paper. This method accurately estimated singles count rate per detector group. Random sinogram was constructed from these estimations. It was found that application of exact method reduced trans-axial bias in random mean value estimation. Parameter selection was investigated.
Starting Page	2203
Ending Page	2205
File Size	293361
Page Count	3
File Format	PDF
ISBN	1424405602
ISSN	10957863
DOI	10.1109/NSSMIC.2006.354351
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	Positron emission tomography Detectors Delay estimation Molecular imaging Delay effects Timing Image reconstruction Torso Imaging phantoms Crystals
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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