Investigations into the effects of material filters (Cu 0.125mm and Al 0.2mm) on image linearity in Tc-99m SPECT

Investigations into the effects of material filters (Cu 0.125mm and Al 0.2mm) on image linearity in Tc-99m SPECT

Performance parameters, e.g., spatial linearity and uniformity of single photon emission computed tomography (SPECT) imaging systems are affected by scattered gamma events. Hence, the quality of the reconstructed image is degraded. In this study, material filter method was employed for reducing the...

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Main Authors: Shah, Syed Inayatullah, Yee, Fong Shu
Format: Article
Language:English
Published: Research Publish Journals 2016
Subjects:
QC Physics
Online Access:http://irep.iium.edu.my/51320/
http://irep.iium.edu.my/51320/
http://irep.iium.edu.my/51320/1/Investigations_into_the_Effects1-3407.pdf
id iium-51320
recordtype eprints
spelling iium-513202018-05-23T03:02:05Z http://irep.iium.edu.my/51320/ Investigations into the effects of material filters (Cu 0.125mm and Al 0.2mm) on image linearity in Tc-99m SPECT Shah, Syed Inayatullah Yee, Fong Shu QC Physics Performance parameters, e.g., spatial linearity and uniformity of single photon emission computed tomography (SPECT) imaging systems are affected by scattered gamma events. Hence, the quality of the reconstructed image is degraded. In this study, material filter method was employed for reducing the adverse effects of scatter events from the Tc-99m spatial linearity images. Material filters work by absorbing the scattered gamma photons before they can reach the surface of the detector of the gamma camera. The filters used were copper (Cu) 0.125mm and aluminum (Al) 0.2mm thick flat sheets. SPECT data were collected by scanning Carlson’s phantom with the linearity insert. The radionuclide, Tc-99m was injected into the phantom. Symmetrical energy window (+/-10% centered at 140keV) was selected. Filters were separately mounted on the outer surface of the gamma camera (GCA-901A/HG) with either low energy general purpose or low energy high resolution collimator. Results of material filtered data images show improvement in the image linearity. It is concluded that material filters have the potential to improve overall image quality in Tc-99m SPECT. Research Publish Journals 2016-04 Article PeerReviewed application/pdf en http://irep.iium.edu.my/51320/1/Investigations_into_the_Effects1-3407.pdf Shah, Syed Inayatullah and Yee, Fong Shu (2016) Investigations into the effects of material filters (Cu 0.125mm and Al 0.2mm) on image linearity in Tc-99m SPECT. International Journal of Healthcare Sciences, 4 (1). pp. 215-219. E-ISSN 2348-5728 http://www.researchpublish.com/journal/IJHS/Issue-1-April-2016-September-2016/0
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
Shah, Syed Inayatullah
Yee, Fong Shu
Investigations into the effects of material filters (Cu 0.125mm and Al 0.2mm) on image linearity in Tc-99m SPECT
description Performance parameters, e.g., spatial linearity and uniformity of single photon emission computed tomography (SPECT) imaging systems are affected by scattered gamma events. Hence, the quality of the reconstructed image is degraded. In this study, material filter method was employed for reducing the adverse effects of scatter events from the Tc-99m spatial linearity images. Material filters work by absorbing the scattered gamma photons before they can reach the surface of the detector of the gamma camera. The filters used were copper (Cu) 0.125mm and aluminum (Al) 0.2mm thick flat sheets. SPECT data were collected by scanning Carlson’s phantom with the linearity insert. The radionuclide, Tc-99m was injected into the phantom. Symmetrical energy window (+/-10% centered at 140keV) was selected. Filters were separately mounted on the outer surface of the gamma camera (GCA-901A/HG) with either low energy general purpose or low energy high resolution collimator. Results of material filtered data images show improvement in the image linearity. It is concluded that material filters have the potential to improve overall image quality in Tc-99m SPECT.
format Article
author Shah, Syed Inayatullah
Yee, Fong Shu
author_facet Shah, Syed Inayatullah
Yee, Fong Shu
author_sort Shah, Syed Inayatullah
title Investigations into the effects of material filters (Cu 0.125mm and Al 0.2mm) on image linearity in Tc-99m SPECT
title_short Investigations into the effects of material filters (Cu 0.125mm and Al 0.2mm) on image linearity in Tc-99m SPECT
title_full Investigations into the effects of material filters (Cu 0.125mm and Al 0.2mm) on image linearity in Tc-99m SPECT
title_fullStr Investigations into the effects of material filters (Cu 0.125mm and Al 0.2mm) on image linearity in Tc-99m SPECT
title_full_unstemmed Investigations into the effects of material filters (Cu 0.125mm and Al 0.2mm) on image linearity in Tc-99m SPECT
title_sort investigations into the effects of material filters (cu 0.125mm and al 0.2mm) on image linearity in tc-99m spect
publisher Research Publish Journals
publishDate 2016
url http://irep.iium.edu.my/51320/
http://irep.iium.edu.my/51320/
http://irep.iium.edu.my/51320/1/Investigations_into_the_Effects1-3407.pdf
first_indexed 2023-09-18T21:12:38Z
last_indexed 2023-09-18T21:12:38Z
_version_ 1777411354955612160

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