The effectiveness of bismuth breast shielding with protocol optimization in CT scans of the thorax
Background: Numerous techniques had been proposed to reduce radiation exposure in computed tomography (CT) including the use of radiation shielding. Objective: This study aims to evaluate efficacy of using a bismuth breast shield and optimized scanning parameter to reduce breast absorbed doses from...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOS Press
2018
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| Online Access: | http://psasir.upm.edu.my/id/eprint/74161/ http://psasir.upm.edu.my/id/eprint/74161/1/The%20effectiveness%20of%20bismuth%20breast%20shielding%20with%20protocol%20optimization%20in%20CT%20scans%20of%20the%20thorax.pdf |
| _version_ | 1848857445855657984 |
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| author | Abdul Karim, Muhammad Khalis Rahim, N. A. Matsubara, K. Hashim, Suad Abu Mhareb, Mohammad Hasan Musa, Yahaya |
| author_facet | Abdul Karim, Muhammad Khalis Rahim, N. A. Matsubara, K. Hashim, Suad Abu Mhareb, Mohammad Hasan Musa, Yahaya |
| author_sort | Abdul Karim, Muhammad Khalis |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Background: Numerous techniques had been proposed to reduce radiation exposure in computed tomography (CT) including the use of radiation shielding. Objective: This study aims to evaluate efficacy of using a bismuth breast shield and optimized scanning parameter to reduce breast absorbed doses from CT thorax examination. Methods: Five protocols comprising the standard CT thorax clinical protocol (CP1) and four modified protocols (CP2 to CP5) were applied in anthropomorphic phantom scans. The phantom was configured as a female by placing a breast component on the chest. The breast component was divided into four quadrants, where 2 thermoluminescence dosimeters (TLD-100) were inserted into each quadrant to measure the absorbed dose. The bismuth shield was placed over the breast component during CP4 and CP5 scans. Results: The pattern of absorbed doses in each breast and quadrant were approximately the same for all protocols, where the 4th quadrant > 3rd quadrant > 2nd quadrant > 1st quadrant. The mean absorbed dose value in CP3 was reduced to almost 34% of CP1's mean absorbed dose. It was reduced even lower to 15% of CP1's mean absorbed dose when the breast shield was used in CP5. Conclusion: This study showed that CT radiation exposure on the breast could be reduced by using a bismuth shield and low tube potential protocol without compromising the image quality. |
| first_indexed | 2025-11-15T11:57:40Z |
| format | Article |
| id | upm-74161 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:57:40Z |
| publishDate | 2018 |
| publisher | IOS Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-741612020-04-27T14:47:07Z http://psasir.upm.edu.my/id/eprint/74161/ The effectiveness of bismuth breast shielding with protocol optimization in CT scans of the thorax Abdul Karim, Muhammad Khalis Rahim, N. A. Matsubara, K. Hashim, Suad Abu Mhareb, Mohammad Hasan Musa, Yahaya Background: Numerous techniques had been proposed to reduce radiation exposure in computed tomography (CT) including the use of radiation shielding. Objective: This study aims to evaluate efficacy of using a bismuth breast shield and optimized scanning parameter to reduce breast absorbed doses from CT thorax examination. Methods: Five protocols comprising the standard CT thorax clinical protocol (CP1) and four modified protocols (CP2 to CP5) were applied in anthropomorphic phantom scans. The phantom was configured as a female by placing a breast component on the chest. The breast component was divided into four quadrants, where 2 thermoluminescence dosimeters (TLD-100) were inserted into each quadrant to measure the absorbed dose. The bismuth shield was placed over the breast component during CP4 and CP5 scans. Results: The pattern of absorbed doses in each breast and quadrant were approximately the same for all protocols, where the 4th quadrant > 3rd quadrant > 2nd quadrant > 1st quadrant. The mean absorbed dose value in CP3 was reduced to almost 34% of CP1's mean absorbed dose. It was reduced even lower to 15% of CP1's mean absorbed dose when the breast shield was used in CP5. Conclusion: This study showed that CT radiation exposure on the breast could be reduced by using a bismuth shield and low tube potential protocol without compromising the image quality. IOS Press 2018 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/74161/1/The%20effectiveness%20of%20bismuth%20breast%20shielding%20with%20protocol%20optimization%20in%20CT%20scans%20of%20the%20thorax.pdf Abdul Karim, Muhammad Khalis and Rahim, N. A. and Matsubara, K. and Hashim, Suad and Abu Mhareb, Mohammad Hasan and Musa, Yahaya (2018) The effectiveness of bismuth breast shielding with protocol optimization in CT scans of the thorax. Journal of X-Ray Science and Technology, 27 (1). pp. 139-147. ISSN 0895-3996; ESSN: 1095-9114 10.3233/XST-180397 |
| spellingShingle | Abdul Karim, Muhammad Khalis Rahim, N. A. Matsubara, K. Hashim, Suad Abu Mhareb, Mohammad Hasan Musa, Yahaya The effectiveness of bismuth breast shielding with protocol optimization in CT scans of the thorax |
| title | The effectiveness of bismuth breast shielding with protocol optimization in CT scans of the thorax |
| title_full | The effectiveness of bismuth breast shielding with protocol optimization in CT scans of the thorax |
| title_fullStr | The effectiveness of bismuth breast shielding with protocol optimization in CT scans of the thorax |
| title_full_unstemmed | The effectiveness of bismuth breast shielding with protocol optimization in CT scans of the thorax |
| title_short | The effectiveness of bismuth breast shielding with protocol optimization in CT scans of the thorax |
| title_sort | effectiveness of bismuth breast shielding with protocol optimization in ct scans of the thorax |
| url | http://psasir.upm.edu.my/id/eprint/74161/ http://psasir.upm.edu.my/id/eprint/74161/ http://psasir.upm.edu.my/id/eprint/74161/1/The%20effectiveness%20of%20bismuth%20breast%20shielding%20with%20protocol%20optimization%20in%20CT%20scans%20of%20the%20thorax.pdf |