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Byun J, Kim Y, Seo J, Kim E, Kim K, Jo A, Lee W, Cho HW, Seo J, Park B. Phantom study of layered sensor module for photon-counting BMD detector. Phys Eng Sci Med 2023; 46:1553-1562. [PMID: 37639108 DOI: 10.1007/s13246-023-01319-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 08/07/2023] [Indexed: 08/29/2023]
Abstract
In this study, we perform bone mineral density (BMD) calculation by designing a layered sensor module (LSM) that divides high- and low-energy spectra from a single shot of X-rays. Gamma-ray evaluation supports this mechanism; low-energy gamma rays are absorbed in the front detector, whereas high-energy gamma rays are absorbed in the rear detector. In this phantom study, LSM divides a single shot of X-ray into two spectra with different distributions of energy, thereby affording X-ray images with different properties, such as contrast and gray scale. The region of interest (ROI) is classified by the Prewitt operator to sort the pixels for BMD calculation or Rs value. The calculated final value is 1.2051 g/cm2 with a standard deviation (SD) of 0.3690 g/cm2, as obtained from our previous study. An improved SD results from the layered structure with two channels for signal processing, the introduction of Rs value, and the use of Prewitt filter to sort reliable data. Overall, this study displays the feasibility of LSM for BMD calculation with a small error, thereby enabling the diagnosis of osteoporosis with novel mechanism.
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Affiliation(s)
- Jangwon Byun
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Yonghoon Kim
- Marine Radioactivity Monitoring Group, Korea Marine Environment Management Corporation, Busan, 48931, Republic of Korea
| | - Jiwon Seo
- Department of Health and Safety Science, Korea University, Seoul, 02841, Republic of Korea
- Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, Republic of Korea
| | - Eunhye Kim
- Department of Health and Safety Science, Korea University, Seoul, 02841, Republic of Korea
| | - Kihyun Kim
- Department of Health and Environmental Science, Korea University, Seoul, 02841, Republic of Korea
| | - Ajin Jo
- Health Science Research Center, Korea University, Seoul, 02841, Republic of Korea
| | - Wonho Lee
- Department of Health and Environmental Science, Korea University, Seoul, 02841, Republic of Korea
- Transdisciplinary Major in Learning Health System, Graduate School, Korea University, Seoul, 02841, Republic of Korea
| | - Hyun Woo Cho
- Department of Applied Physics, Korea University, Korea University, Sejong, 339-700, Republic of Korea
| | - Jichul Seo
- Department of Applied Physics, Korea University, Korea University, Sejong, 339-700, Republic of Korea
| | - Beomjun Park
- Department of Health and Safety Science, Korea University, Seoul, 02841, Republic of Korea.
- Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, Republic of Korea.
- Advanced Crystal Material/Device Research Center, Konkuk University, Seoul, 143-701, Republic of Korea.
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