| Kang Tianliang,Feng Zechen,Zhang Zongrui,et al.An investigation on radiation dose and diagnostic reference level for digital radiography in Beijing[J].Chinese Journal of Radiological Medicine and Protection,2025,45(4):346-355 |
| An investigation on radiation dose and diagnostic reference level for digital radiography in Beijing |
| Received:June 20, 2024 |
| DOI：10.3760/cma.j.cn112271-20240620-00231 |
| KeyWords:Radiation dose Digital photography Average glandular dose Diagnostic reference level Radiation dose optimization |
| FundProject: |
| Author Name | Affiliation | E-mail | | Kang Tianliang | Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China | | | Feng Zechen | Institute of Radiological Protection, Beijing Centers for Disease Prevention and Control, Beijing 100013, China | | | Zhang Zongrui | Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China | | | Liu Yunfu | Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China | | | Zhang Yongxian | Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China | | | Niu Yantao | Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China | ytniu163@163.com |
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| Abstract:: |
| Objective To investigate the radiation dose levels of digital radiography (DR) in adult patients and explore the diagnostic reference level (DRL) of radiation dose in Beijing. Methods Radiation dose data were collected from 39 medical institutions in Beijing on 18 930 DR examinations of chest anterior and lateral view, abdomen anterior and posterior view, abdomen standing view, cervical spine anterior and lateral view, lumbar spine anterior and lateral view, knee joint anterior and lateral view as well as 5 266 digital mammography (CC view and MLO view). For ordinary DR examinations, the incident air kinetic energy (Ka,i), incident air specific kinetic energy area product (PKA) and effective dose (E) to the examined individuals were used for the investigation and estimation of radiation dose. For digital mammography, the average glandular dose (AGD) was calculated. DRLs should be set at the 75th percentile of median values obtained in each medical institution. Results The Ka,i,PKA and E of DRL for Chest (PA), Chest (lateral), abdominal(PA), abdominal (AP), Pelvic(AP), Cervical (AP), Cervical (lateral), Lumbar (AP), Lumbar (lateral), Knee joint (AP) and Knee joint (lateral) of conventional DR were 0.14, 0.31, 1.25, 2.18, 1.86, 0.51, 0.14, 2.97, 8.39, 0.37, 0.37 mGy, 159, 259, 1 917, 2 336, 2 867, 312, 301, 3 500, 3 359, 269, 255 mGy·cm2, 0.03, 0.05, 0.20, 0.43, 0.23, 0.03, 0.02, 0.47, 0.35, <0.001, <0.001 mSv. The DRLs for digital mammography were calculated to be 1.87 mGy (CC view), 1.94 mGy (MLO view) and 3.99 mGy (accumulated for one examination). Conclusions The radiation dose from DR examinations is relatively low. In clinical practice, the selection of imaging parameters should be further standardized on the basis of the local DRL. |
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