Utilisation of Backscattered Gamma Photons in Tc-99m SPECT Imaging

A number of report have suggested that some Comptom-scattered gamma-photons do carry true spatial information even after multiple deflections in the imaged object, and scattered data have been used for the enhancement of image quality. This study attempts to examine that conclusion via the use of si...

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Main Authors:	Sayed, Inayatullah Shah, Leeman, Sidney, Tonge, Christine M
Format:	Article
Language:	English
Published:	Pakistan Atomic Energy Commission, Islamabad 1998
Subjects:	QC Physics
Online Access:	http://irep.iium.edu.my/6060/ http://irep.iium.edu.my/6060/1/Utilisation_of_Backscattered_Gamma_Photons.pdf

id	iium-6060
recordtype	eprints
spelling	iium-60602013-07-10T06:34:37Z http://irep.iium.edu.my/6060/ Utilisation of Backscattered Gamma Photons in Tc-99m SPECT Imaging Sayed, Inayatullah Shah Leeman, Sidney Tonge, Christine M QC Physics A number of report have suggested that some Comptom-scattered gamma-photons do carry true spatial information even after multiple deflections in the imaged object, and scattered data have been used for the enhancement of image quality. This study attempts to examine that conclusion via the use of simple energy windowing technique. In the work reported here, data straddling the 81-154 keV range were segmented into three disjoints energy windows: photopeak, backscaterring, and angle-scattered regions. It is shown how image quality may be manipulated by appropriate combination of the sub-images derived from this data sets. Image were compared with those reconstructed from the data acquired within the conventional energy window (126-154 keV). It is found that the conventional view is the more correct one: scattered gamma-photons do, in general, reduce image quality . This conclusion is reinforced by the demonstration that some of the image enhancements claimed when scattered data is incorporated, may in fact be mimicked by processing the photopeak image alone. Pakistan Atomic Energy Commission, Islamabad 1998 Article PeerReviewed application/pdf en http://irep.iium.edu.my/6060/1/Utilisation_of_Backscattered_Gamma_Photons.pdf Sayed, Inayatullah Shah and Leeman, Sidney and Tonge, Christine M (1998) Utilisation of Backscattered Gamma Photons in Tc-99m SPECT Imaging. The Nucleus, 35 (1-2). pp. 15-19. ISSN 0029-5695
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 Tonge, Christine M Utilisation of Backscattered Gamma Photons in Tc-99m SPECT Imaging
description	A number of report have suggested that some Comptom-scattered gamma-photons do carry true spatial information even after multiple deflections in the imaged object, and scattered data have been used for the enhancement of image quality. This study attempts to examine that conclusion via the use of simple energy windowing technique. In the work reported here, data straddling the 81-154 keV range were segmented into three disjoints energy windows: photopeak, backscaterring, and angle-scattered regions. It is shown how image quality may be manipulated by appropriate combination of the sub-images derived from this data sets. Image were compared with those reconstructed from the data acquired within the conventional energy window (126-154 keV). It is found that the conventional view is the more correct one: scattered gamma-photons do, in general, reduce image quality . This conclusion is reinforced by the demonstration that some of the image enhancements claimed when scattered data is incorporated, may in fact be mimicked by processing the photopeak image alone.
format	Article
author	Sayed, Inayatullah Shah Leeman, Sidney Tonge, Christine M
author_facet	Sayed, Inayatullah Shah Leeman, Sidney Tonge, Christine M
author_sort	Sayed, Inayatullah Shah
title	Utilisation of Backscattered Gamma Photons in Tc-99m SPECT Imaging
title_short	Utilisation of Backscattered Gamma Photons in Tc-99m SPECT Imaging
title_full	Utilisation of Backscattered Gamma Photons in Tc-99m SPECT Imaging
title_fullStr	Utilisation of Backscattered Gamma Photons in Tc-99m SPECT Imaging
title_full_unstemmed	Utilisation of Backscattered Gamma Photons in Tc-99m SPECT Imaging
title_sort	utilisation of backscattered gamma photons in tc-99m spect imaging
publisher	Pakistan Atomic Energy Commission, Islamabad
publishDate	1998
url	http://irep.iium.edu.my/6060/ http://irep.iium.edu.my/6060/1/Utilisation_of_Backscattered_Gamma_Photons.pdf
first_indexed	2023-09-18T20:14:54Z
last_indexed	2023-09-18T20:14:54Z
_version_	1777407721921839104

Utilisation of Backscattered Gamma Photons in Tc-99m SPECT Imaging

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