NDLI: PET system calibrations and corrections for quantitative and spatially accurate images

Content Provider	IEEE Xplore Digital Library
Author	Hoffman, E.J. Guerrero, T.M. Germano, G. Digby, W.M. Dahlbom, M.
Copyright Year	1963
Abstract	Detector efficiency normalization and spatial distortion corrections are considered for PET (positron emission tomography) systems. A technique is developed for correcting positioning errors. To correct for nonuniform detector efficiencies, it is necessary to normalize individual detector efficiencies with a PET equivalent of a flood field correction. The frequency distributions of the percent deviations of the processed low-count normalizations and cylinder normalizations indicate that the assumptions of the calculations entail errors that mimic 3-5% standard deviations in the final values of the normalization factors. In normal operation of the UCLA PET center, a full high-count normalization is performed, and the normalization sinogram uses the measured values in the central portion to and extends the FOV (field of view) by the method described.<>
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	1108
Ending Page	1112
Page Count	5
File Size	385947
File Format	PDF
ISSN	00189499
Volume Number	36
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Positron emission tomography Calibration Detectors Geometry Image edge detection Nuclear medicine Crystals Sampling methods Position measurement Biophysics
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Electrical and Electronic Engineering Nuclear Energy and Engineering

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