Investigation of the Relationship between Body Parameters and mAs Using Non-Contact Two-Dimensional Thickness Measurement in Chest Digital Radiography
The current study aimed to investigate the relationship between body parameters and the current–time product (mAs) in chest digital radiography using a non-contact infrared thickness-measurement sensor. An anthropomorphic chest phantom was first used to understand variations in mAs over multiple pos...
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| Format: | Article |
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MDPI AG
2023-08-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/16/7169 |
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| author | Jia-Ru Lin I-Hao Cheng Yu-Syuan Liang Jyun-Jie Li Jen-Ming Tsai Min-Tsung Wang Te-Pao Lin Su-Lan Huang Ming-Chung Chou |
| author_facet | Jia-Ru Lin I-Hao Cheng Yu-Syuan Liang Jyun-Jie Li Jen-Ming Tsai Min-Tsung Wang Te-Pao Lin Su-Lan Huang Ming-Chung Chou |
| author_sort | Jia-Ru Lin |
| collection | DOAJ |
| description | The current study aimed to investigate the relationship between body parameters and the current–time product (mAs) in chest digital radiography using a non-contact infrared thickness-measurement sensor. An anthropomorphic chest phantom was first used to understand variations in mAs over multiple positionings during chest radiography when using the automatic exposure control (AEC) technique. In a human study, 929 consecutive male subjects who underwent regular chest examinations were enrolled, and their height (H), weight (W), and body mass index (BMI) were recorded. In addition, their chest thickness (T) was measured at exhalation using a non-contact infrared sensor, and chest radiography was then performed using the AEC technique. Finally, the relationship between four body parameters (T, BMI, T*BMI, and W/H) and mAs was investigated by fitting the body parameters to mAs using three curve models. The phantom study showed that the maximum mAs was 1.76 times higher than the lowest mAs during multiple positionings in chest radiography. In the human study, all chest radiographs passed the routine quality control procedure and had an exposure index between 100 and 212. In curve fitting, the comparisons showed that W/H had a closer relationship with mAs than the other body parameters, while the first-order power model with W/H fitted to mAs performed the best and had an R-square of 0.9971. We concluded that the relationship between W/H and mAs in the first-order power model may be helpful in predicting the optimal mAs and reducing the radiation dose for chest radiography when using the AEC technique. |
| first_indexed | 2024-03-10T23:35:17Z |
| format | Article |
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| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T23:35:17Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-0b9ca3786b0b48f1b4d0930d7c81176c2023-11-19T02:57:45ZengMDPI AGSensors1424-82202023-08-012316716910.3390/s23167169Investigation of the Relationship between Body Parameters and mAs Using Non-Contact Two-Dimensional Thickness Measurement in Chest Digital RadiographyJia-Ru Lin0I-Hao Cheng1Yu-Syuan Liang2Jyun-Jie Li3Jen-Ming Tsai4Min-Tsung Wang5Te-Pao Lin6Su-Lan Huang7Ming-Chung Chou8Department of Radiology, Kaohsiung Armed Force General Hospital, Kaohsiung 802, TaiwanDepartment of Radiology, Kaohsiung Armed Force General Hospital, Kaohsiung 802, TaiwanDepartment of Radiation Oncology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, TaiwanDepartment of Radiology, Kaohsiung Armed Force General Hospital, Kaohsiung 802, TaiwanDepartment of Radiology, Kaohsiung Armed Force General Hospital, Kaohsiung 802, TaiwanDepartment of Radiology, Kaohsiung Armed Force General Hospital, Kaohsiung 802, TaiwanDepartment of Radiology, Kaohsiung Armed Force General Hospital, Kaohsiung 802, TaiwanDepartment of Radiology, Kaohsiung Armed Force General Hospital, Kaohsiung 802, TaiwanDepartment of Medical Imaging and Radiological Sciences, Kaohsiung Medical University, Kaohsiung 807, TaiwanThe current study aimed to investigate the relationship between body parameters and the current–time product (mAs) in chest digital radiography using a non-contact infrared thickness-measurement sensor. An anthropomorphic chest phantom was first used to understand variations in mAs over multiple positionings during chest radiography when using the automatic exposure control (AEC) technique. In a human study, 929 consecutive male subjects who underwent regular chest examinations were enrolled, and their height (H), weight (W), and body mass index (BMI) were recorded. In addition, their chest thickness (T) was measured at exhalation using a non-contact infrared sensor, and chest radiography was then performed using the AEC technique. Finally, the relationship between four body parameters (T, BMI, T*BMI, and W/H) and mAs was investigated by fitting the body parameters to mAs using three curve models. The phantom study showed that the maximum mAs was 1.76 times higher than the lowest mAs during multiple positionings in chest radiography. In the human study, all chest radiographs passed the routine quality control procedure and had an exposure index between 100 and 212. In curve fitting, the comparisons showed that W/H had a closer relationship with mAs than the other body parameters, while the first-order power model with W/H fitted to mAs performed the best and had an R-square of 0.9971. We concluded that the relationship between W/H and mAs in the first-order power model may be helpful in predicting the optimal mAs and reducing the radiation dose for chest radiography when using the AEC technique.https://www.mdpi.com/1424-8220/23/16/7169body parameterschest radiographymAsautomatic exposure controlnon-contact infrared sensor |
| spellingShingle | Jia-Ru Lin I-Hao Cheng Yu-Syuan Liang Jyun-Jie Li Jen-Ming Tsai Min-Tsung Wang Te-Pao Lin Su-Lan Huang Ming-Chung Chou Investigation of the Relationship between Body Parameters and mAs Using Non-Contact Two-Dimensional Thickness Measurement in Chest Digital Radiography Sensors body parameters chest radiography mAs automatic exposure control non-contact infrared sensor |
| title | Investigation of the Relationship between Body Parameters and mAs Using Non-Contact Two-Dimensional Thickness Measurement in Chest Digital Radiography |
| title_full | Investigation of the Relationship between Body Parameters and mAs Using Non-Contact Two-Dimensional Thickness Measurement in Chest Digital Radiography |
| title_fullStr | Investigation of the Relationship between Body Parameters and mAs Using Non-Contact Two-Dimensional Thickness Measurement in Chest Digital Radiography |
| title_full_unstemmed | Investigation of the Relationship between Body Parameters and mAs Using Non-Contact Two-Dimensional Thickness Measurement in Chest Digital Radiography |
| title_short | Investigation of the Relationship between Body Parameters and mAs Using Non-Contact Two-Dimensional Thickness Measurement in Chest Digital Radiography |
| title_sort | investigation of the relationship between body parameters and mas using non contact two dimensional thickness measurement in chest digital radiography |
| topic | body parameters chest radiography mAs automatic exposure control non-contact infrared sensor |
| url | https://www.mdpi.com/1424-8220/23/16/7169 |
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