Flat sheet of zinc material as a filter for gamma photons in Tc-99m SPECT imaging

Purpose of the Study: Scattered gamma photons in single photon emission computed tomography (SPECT) is one of the main issues that degrade the image quality. There are several types of scatter correction methods. However, none of the technique is applied in routine clinical Tc-99m SPECT imaging. The...

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Main Authors:	Abdullah, Nazifah, Sayed, Inayatullah Shah, Zakaria, Ahmad
Format:	Article
Language:	English
Published:	Science Publishing Corporation Publisher of International Academic Journals 2018
Subjects:	QC Physics
Online Access:	http://irep.iium.edu.my/68967/ http://irep.iium.edu.my/68967/ http://irep.iium.edu.my/68967/1/Zinc%200.2mm%20_IJET%202018.pdf

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recordtype	eprints
spelling	iium-689672019-01-07T07:25:49Z http://irep.iium.edu.my/68967/ Flat sheet of zinc material as a filter for gamma photons in Tc-99m SPECT imaging Abdullah, Nazifah Sayed, Inayatullah Shah Zakaria, Ahmad QC Physics Purpose of the Study: Scattered gamma photons in single photon emission computed tomography (SPECT) is one of the main issues that degrade the image quality. There are several types of scatter correction methods. However, none of the technique is applied in routine clinical Tc-99m SPECT imaging. Therefore, Zinc (Zn) material filter was constructed for pre-filtration of scattered gamma photons in Tc-99m single photon emission computed tomography (SPECT). Materials and Methods: Tc-99m radioactivity was administered into the Carlson’s phantom. Planar and tomographic data were acquired with and without hot regions insert, respectively, with and without material filter. Scatter to non-scatter ratio was measured from the photopeak region of Tc-99m spectra. Tomographic images were generated using filtered back projection method. Contours on images were drawn with ImageJ software. Images obtained with and without material filter were analysed in terms of detectability of hot regions. Results: Remarkable decrease (≈ 21%) in the ratio of scattered to non-scattered gamma photons with material filter was achieved. Detectability of smaller hot regions with material filter was enhanced. In terms of sizes of all hot regions, material filter results appear closer to the original sizes. Conclusion: Material filter technique could be applied in Tc-99m clinical SPECT, while organ phantom studies are needed. Science Publishing Corporation Publisher of International Academic Journals 2018 Article PeerReviewed application/pdf en http://irep.iium.edu.my/68967/1/Zinc%200.2mm%20_IJET%202018.pdf Abdullah, Nazifah and Sayed, Inayatullah Shah and Zakaria, Ahmad (2018) Flat sheet of zinc material as a filter for gamma photons in Tc-99m SPECT imaging. International Journal of Engineering & Technology, 7 (4.15 (Special Issue 15)). pp. 311-314. ISSN 2227-524X https://www.sciencepubco.com/index.php/ijet/article/view/23018/11457
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 Abdullah, Nazifah Sayed, Inayatullah Shah Zakaria, Ahmad Flat sheet of zinc material as a filter for gamma photons in Tc-99m SPECT imaging
description	Purpose of the Study: Scattered gamma photons in single photon emission computed tomography (SPECT) is one of the main issues that degrade the image quality. There are several types of scatter correction methods. However, none of the technique is applied in routine clinical Tc-99m SPECT imaging. Therefore, Zinc (Zn) material filter was constructed for pre-filtration of scattered gamma photons in Tc-99m single photon emission computed tomography (SPECT). Materials and Methods: Tc-99m radioactivity was administered into the Carlson’s phantom. Planar and tomographic data were acquired with and without hot regions insert, respectively, with and without material filter. Scatter to non-scatter ratio was measured from the photopeak region of Tc-99m spectra. Tomographic images were generated using filtered back projection method. Contours on images were drawn with ImageJ software. Images obtained with and without material filter were analysed in terms of detectability of hot regions. Results: Remarkable decrease (≈ 21%) in the ratio of scattered to non-scattered gamma photons with material filter was achieved. Detectability of smaller hot regions with material filter was enhanced. In terms of sizes of all hot regions, material filter results appear closer to the original sizes. Conclusion: Material filter technique could be applied in Tc-99m clinical SPECT, while organ phantom studies are needed.
format	Article
author	Abdullah, Nazifah Sayed, Inayatullah Shah Zakaria, Ahmad
author_facet	Abdullah, Nazifah Sayed, Inayatullah Shah Zakaria, Ahmad
author_sort	Abdullah, Nazifah
title	Flat sheet of zinc material as a filter for gamma photons in Tc-99m SPECT imaging
title_short	Flat sheet of zinc material as a filter for gamma photons in Tc-99m SPECT imaging
title_full	Flat sheet of zinc material as a filter for gamma photons in Tc-99m SPECT imaging
title_fullStr	Flat sheet of zinc material as a filter for gamma photons in Tc-99m SPECT imaging
title_full_unstemmed	Flat sheet of zinc material as a filter for gamma photons in Tc-99m SPECT imaging
title_sort	flat sheet of zinc material as a filter for gamma photons in tc-99m spect imaging
publisher	Science Publishing Corporation Publisher of International Academic Journals
publishDate	2018
url	http://irep.iium.edu.my/68967/ http://irep.iium.edu.my/68967/ http://irep.iium.edu.my/68967/1/Zinc%200.2mm%20_IJET%202018.pdf
first_indexed	2023-09-18T21:37:52Z
last_indexed	2023-09-18T21:37:52Z
_version_	1777412942310932480

Flat sheet of zinc material as a filter for gamma photons in Tc-99m SPECT imaging

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