A hybrid pre-processing attenuation correction technique for SPECT imaging

A hybrid pre-processing attenuation correction technique for SPECT imaging

Factor acting against quantitation of radioactivity uptake in Single Photon Emission Computed Tomography (SPECT) is the attenuation (scattering and absorption) of gamma photons in the patient, and a number of approximate correction techniques exist. A hybrid technique dealing with the attenuation p...

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Main Authors: Sayed, Inayatullah Shah, Leeman, Sidney
Format: Article
Language:English
Published: Al Ain University of Science and Technology, UAE 2006
Subjects:
QC Physics
Online Access:http://irep.iium.edu.my/6059/
http://irep.iium.edu.my/6059/
http://irep.iium.edu.my/6059/1/Hybrid_preprocessing_ATC.pdf
id iium-6059
recordtype eprints
spelling iium-60592013-07-10T07:30:44Z http://irep.iium.edu.my/6059/ A hybrid pre-processing attenuation correction technique for SPECT imaging Sayed, Inayatullah Shah Leeman, Sidney QC Physics Factor acting against quantitation of radioactivity uptake in Single Photon Emission Computed Tomography (SPECT) is the attenuation (scattering and absorption) of gamma photons in the patient, and a number of approximate correction techniques exist. A hybrid technique dealing with the attenuation problem, which combines some pre-processing attenuation correction methods (arithmetic and geometric–mean approaches) is proposed and investigated. The technique is analyzed in terms of data obtained by 360 degree transaxial scanning of a water filled cylindrical phantom (with Tc-99m solution) containing an insert with hot regions of various sizes and at different interior locations. The reconstructed images are assessed in terms of two sets of measurements: (i) standard deviations of the local count rates in the images of a uniformly hot cylinder; (ii) relative count ratios in the images of hot regions positioned at different places in phantom. The results obtained with the hybrid technique reported here are positive, and the clinical context in which the technique may be expected to be useful is indicated. Al Ain University of Science and Technology, UAE 2006 Article PeerReviewed application/pdf en http://irep.iium.edu.my/6059/1/Hybrid_preprocessing_ATC.pdf Sayed, Inayatullah Shah and Leeman, Sidney (2006) A hybrid pre-processing attenuation correction technique for SPECT imaging. International Journal of Scientific Research, 16. pp. 51-55. ISSN 1021-0806 http://theglobaljournals.com/ijsr/
repository_type Digital Repository
institution_category Local University
institution International Islamic University Malaysia
building IIUM Repository
collection Online Access
language English
topic QC Physics
spellingShingle QC Physics
Sayed, Inayatullah Shah
Leeman, Sidney
A hybrid pre-processing attenuation correction technique for SPECT imaging
description Factor acting against quantitation of radioactivity uptake in Single Photon Emission Computed Tomography (SPECT) is the attenuation (scattering and absorption) of gamma photons in the patient, and a number of approximate correction techniques exist. A hybrid technique dealing with the attenuation problem, which combines some pre-processing attenuation correction methods (arithmetic and geometric–mean approaches) is proposed and investigated. The technique is analyzed in terms of data obtained by 360 degree transaxial scanning of a water filled cylindrical phantom (with Tc-99m solution) containing an insert with hot regions of various sizes and at different interior locations. The reconstructed images are assessed in terms of two sets of measurements: (i) standard deviations of the local count rates in the images of a uniformly hot cylinder; (ii) relative count ratios in the images of hot regions positioned at different places in phantom. The results obtained with the hybrid technique reported here are positive, and the clinical context in which the technique may be expected to be useful is indicated.
format Article
author Sayed, Inayatullah Shah
Leeman, Sidney
author_facet Sayed, Inayatullah Shah
Leeman, Sidney
author_sort Sayed, Inayatullah Shah
title A hybrid pre-processing attenuation correction technique for SPECT imaging
title_short A hybrid pre-processing attenuation correction technique for SPECT imaging
title_full A hybrid pre-processing attenuation correction technique for SPECT imaging
title_fullStr A hybrid pre-processing attenuation correction technique for SPECT imaging
title_full_unstemmed A hybrid pre-processing attenuation correction technique for SPECT imaging
title_sort hybrid pre-processing attenuation correction technique for spect imaging
publisher Al Ain University of Science and Technology, UAE
publishDate 2006
url http://irep.iium.edu.my/6059/
http://irep.iium.edu.my/6059/
http://irep.iium.edu.my/6059/1/Hybrid_preprocessing_ATC.pdf
first_indexed 2023-09-18T20:14:54Z
last_indexed 2023-09-18T20:14:54Z
_version_ 1777407721775038464

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