An investigation on radiation dose and diagnostic reference level for digital radiography in Beijing
10.3760/cma.j.cn112271-20240620-00231
- VernacularTitle:北京市数字X射线摄影受检者辐射剂量调查及其诊断参考水平探讨
- Author:
Tianliang KANG
1
;
Zechen FENG
;
Zongrui ZHANG
;
Yunfu LIU
;
Yongxian ZHANG
;
Yantao NIU
Author Information
1. 首都医科大学附属北京同仁医院放射科，北京 100730
- Publication Type:Journal Article
- Keywords:
Radiation dose;
Digital photography;
Average glandular dose;
Diagnostic reference level;
Radiation dose optimization
- From:
Chinese Journal of Radiological Medicine and Protection
2025;45(4):346-355
- CountryChina
- Language:Chinese
-
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 75 th 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·cm 2, 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.
