Optimization of exposure parameters in full field digital mammography using figure of merit

Mammography is used as a screening tool for early detection of breast cancer. However, the radiation dose used should be as low as possible to minimize any effects on asymptomatic woman while maintaining the diagnostic value of the image as mammography is done annually. This study was done to determ...

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Main Authors:	Laila Suryani Elias, Eng, May Lin, Ang, Wee Chin, Abd Aziz Tajuddin, Shantini A. Arasaratnam, Suraya Aziz, Khairul Osman, Kanaga Kumari Chelliah
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2010
Online Access:	http://journalarticle.ukm.my/7336/ http://journalarticle.ukm.my/7336/ http://journalarticle.ukm.my/7336/1/01_Md_Yeaminhossain.pdf

id	ukm-7336
recordtype	eprints
spelling	ukm-73362016-12-14T06:43:46Z http://journalarticle.ukm.my/7336/ Optimization of exposure parameters in full field digital mammography using figure of merit Laila Suryani Elias, Eng, May Lin Ang, Wee Chin Abd Aziz Tajuddin, Shantini A. Arasaratnam, Suraya Aziz, Khairul Osman, Kanaga Kumari Chelliah, Mammography is used as a screening tool for early detection of breast cancer. However, the radiation dose used should be as low as possible to minimize any effects on asymptomatic woman while maintaining the diagnostic value of the image as mammography is done annually. This study was done to determine the optimum exposure parameter in exposure control mode (AEC) for two combinations of anode/filter which were molybdenum/molybdenum (Mo/Mo) and molybdenum/rhodium (Mo/Rh) using the Lorad Selenia digital mammography system at the Women’s Breast Clinic, National Cancer Society (NCS). A CIRS012A mammography research of phantom 4 cm thickness with 50% glandularity was exposed in the cranio-caudal projection. TLD 100H was used to measure the entrance surface air kerma (ESAK). The AGD values were then calculated from the ESAK values, incorporating three correction factors (g, c and s) according to Euref protocol. Image quality was evaluated using signal to noise ratio (SNR). Figure of Merit (FOM) which is the ratio of the square of SNR to the AGD shows that 30 kVp is the optimum exposure parameter for a 4 cm thickness phantom with the use of Mo/Rh and Mo/Mo anode/filter combination. Non-parametric Spearman correlation test showed a negative linear relationship between AGD and SNR with increasing tube voltage for both anode/filters. Universiti Kebangsaan Malaysia 2010-04 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/7336/1/01_Md_Yeaminhossain.pdf Laila Suryani Elias, and Eng, May Lin and Ang, Wee Chin and Abd Aziz Tajuddin, and Shantini A. Arasaratnam, and Suraya Aziz, and Khairul Osman, and Kanaga Kumari Chelliah, (2010) Optimization of exposure parameters in full field digital mammography using figure of merit. Sains Malaysiana, 39 (2). pp. 299-303. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol39num2_2010/contentsVol39num2_2010.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Mammography is used as a screening tool for early detection of breast cancer. However, the radiation dose used should be as low as possible to minimize any effects on asymptomatic woman while maintaining the diagnostic value of the image as mammography is done annually. This study was done to determine the optimum exposure parameter in exposure control mode (AEC) for two combinations of anode/filter which were molybdenum/molybdenum (Mo/Mo) and molybdenum/rhodium (Mo/Rh) using the Lorad Selenia digital mammography system at the Women’s Breast Clinic, National Cancer Society (NCS). A CIRS012A mammography research of phantom 4 cm thickness with 50% glandularity was exposed in the cranio-caudal projection. TLD 100H was used to measure the entrance surface air kerma (ESAK). The AGD values were then calculated from the ESAK values, incorporating three correction factors (g, c and s) according to Euref protocol. Image quality was evaluated using signal to noise ratio (SNR). Figure of Merit (FOM) which is the ratio of the square of SNR to the AGD shows that 30 kVp is the optimum exposure parameter for a 4 cm thickness phantom with the use of Mo/Rh and Mo/Mo anode/filter combination. Non-parametric Spearman correlation test showed a negative linear relationship between AGD and SNR with increasing tube voltage for both anode/filters.
format	Article
author	Laila Suryani Elias, Eng, May Lin Ang, Wee Chin Abd Aziz Tajuddin, Shantini A. Arasaratnam, Suraya Aziz, Khairul Osman, Kanaga Kumari Chelliah,
spellingShingle	Laila Suryani Elias, Eng, May Lin Ang, Wee Chin Abd Aziz Tajuddin, Shantini A. Arasaratnam, Suraya Aziz, Khairul Osman, Kanaga Kumari Chelliah, Optimization of exposure parameters in full field digital mammography using figure of merit
author_facet	Laila Suryani Elias, Eng, May Lin Ang, Wee Chin Abd Aziz Tajuddin, Shantini A. Arasaratnam, Suraya Aziz, Khairul Osman, Kanaga Kumari Chelliah,
author_sort	Laila Suryani Elias,
title	Optimization of exposure parameters in full field digital mammography using figure of merit
title_short	Optimization of exposure parameters in full field digital mammography using figure of merit
title_full	Optimization of exposure parameters in full field digital mammography using figure of merit
title_fullStr	Optimization of exposure parameters in full field digital mammography using figure of merit
title_full_unstemmed	Optimization of exposure parameters in full field digital mammography using figure of merit
title_sort	optimization of exposure parameters in full field digital mammography using figure of merit
publisher	Universiti Kebangsaan Malaysia
publishDate	2010
url	http://journalarticle.ukm.my/7336/ http://journalarticle.ukm.my/7336/ http://journalarticle.ukm.my/7336/1/01_Md_Yeaminhossain.pdf
first_indexed	2023-09-18T19:49:24Z
last_indexed	2023-09-18T19:49:24Z
_version_	1777406117705416704

Optimization of exposure parameters in full field digital mammography using figure of merit

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