Study on the factors affecting glandular dose in digital breast tomosynthesis

Digital breast tomosynthesis (DBT) is the type of 3 -dimensional mammography that construct three-dimensional images based on the series of 2-dimensional images. DBT is said to has lower radiation dose than the digital mammography. This study focuses on the factors that affecting the average glandul...

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Main Author:	Ab Aziz, Nur Alia Nabihah
Format:	Thesis
Language:	English
Published:	2020
Subjects:	R Medicine
Online Access:	http://eprints.usm.my/50697/1/Nur%20Alia%20Nabihah-24%20pages.pdf
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id	my-usm-ep.50697
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spelling	my-usm-ep.506972021-11-21T04:43:52Z Study on the factors affecting glandular dose in digital breast tomosynthesis 2020-08 Ab Aziz, Nur Alia Nabihah R Medicine Digital breast tomosynthesis (DBT) is the type of 3 -dimensional mammography that construct three-dimensional images based on the series of 2-dimensional images. DBT is said to has lower radiation dose than the digital mammography. This study focuses on the factors that affecting the average glandular dose (AGD) in DBT. A total of 224 dose data were included in this study, which is 57 samples for RCC, 55 samples for LCC, 57 samples for LMLO, and 55 samples for LMLO projections. All examinations were performed using the same mammographic unit which is Siemens MAMMOMAT Revelation (Siemens Healthineer, German) at Imaging Unit, Advanced Medical and Dental Institute (AMDI), USM, Penang. For the comparison between 2D and 3D mode in DBT, the different is statistically significant where 3D shown a higher mean of AGD than 2D modes. The multiple regression and correlation tests were used to evaluate the correlation between AGD with exposure setting and breast thickness. There is a positive correlation between the AGD with exposure settings and breast thickness. The mAs and kV settings have a linear relationship with AGD with R2 value of 0.562 and 0.605 respectively for right and left side of the breast. The correlation value of R2 obtained for breast thickness is 0.207 and 0.059 respectively for right and left breast. The denser breast (breast glandularity type D and C) has higher AGD value than less dense breast (type A and B). There is no statistically significant difference of AGD for different mammographic projections. 2020-08 Thesis http://eprints.usm.my/50697/ http://eprints.usm.my/50697/1/Nur%20Alia%20Nabihah-24%20pages.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Sains Kesihatan
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	R Medicine
spellingShingle	R Medicine Ab Aziz, Nur Alia Nabihah Study on the factors affecting glandular dose in digital breast tomosynthesis
description	Digital breast tomosynthesis (DBT) is the type of 3 -dimensional mammography that construct three-dimensional images based on the series of 2-dimensional images. DBT is said to has lower radiation dose than the digital mammography. This study focuses on the factors that affecting the average glandular dose (AGD) in DBT. A total of 224 dose data were included in this study, which is 57 samples for RCC, 55 samples for LCC, 57 samples for LMLO, and 55 samples for LMLO projections. All examinations were performed using the same mammographic unit which is Siemens MAMMOMAT Revelation (Siemens Healthineer, German) at Imaging Unit, Advanced Medical and Dental Institute (AMDI), USM, Penang. For the comparison between 2D and 3D mode in DBT, the different is statistically significant where 3D shown a higher mean of AGD than 2D modes. The multiple regression and correlation tests were used to evaluate the correlation between AGD with exposure setting and breast thickness. There is a positive correlation between the AGD with exposure settings and breast thickness. The mAs and kV settings have a linear relationship with AGD with R2 value of 0.562 and 0.605 respectively for right and left side of the breast. The correlation value of R2 obtained for breast thickness is 0.207 and 0.059 respectively for right and left breast. The denser breast (breast glandularity type D and C) has higher AGD value than less dense breast (type A and B). There is no statistically significant difference of AGD for different mammographic projections.
format	Thesis
qualification_level	Master's degree
author	Ab Aziz, Nur Alia Nabihah
author_facet	Ab Aziz, Nur Alia Nabihah
author_sort	Ab Aziz, Nur Alia Nabihah
title	Study on the factors affecting glandular dose in digital breast tomosynthesis
title_short	Study on the factors affecting glandular dose in digital breast tomosynthesis
title_full	Study on the factors affecting glandular dose in digital breast tomosynthesis
title_fullStr	Study on the factors affecting glandular dose in digital breast tomosynthesis
title_full_unstemmed	Study on the factors affecting glandular dose in digital breast tomosynthesis
title_sort	study on the factors affecting glandular dose in digital breast tomosynthesis
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Sains Kesihatan
publishDate	2020
url	http://eprints.usm.my/50697/1/Nur%20Alia%20Nabihah-24%20pages.pdf
_version_	1747822043989016576

Study on the factors affecting glandular dose in digital breast tomosynthesis

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