| Xue Ke,Xu Hui,Feng Zechen,et al.Radiation dose measurement for breast cone-beam CT-scanned examinees based on ART phantom of breast[J].Chinese Journal of Radiological Medicine and Protection,2025,45(2):122-128 |
| Radiation dose measurement for breast cone-beam CT-scanned examinees based on ART phantom of breast |
| Received:February 05, 2024 |
| DOI：10.3760/cma.j.cn112271-20240205-00044 |
| KeyWords:Breast cone-beam computed tomography Thermoluminescent detector Average glandular dose Radiation dose |
| FundProject: |
| Author Name | Affiliation | E-mail | | Xue Ke | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Xu Hui | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | xuhui@nirp.chinacdc.cn | | Feng Zechen | Institute of Radiological Protection, Beijing Center for Disease Prevention and Control, Beijing 100013, China | | | Yue Baorong | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Ding Yanqiu | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Ye Zhaoxiang | Department of Radiology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin 300060, China | |
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| Abstract:: |
| Objective To measure and estimate the radiation dose to breast cone-beam CT (CBCT) -scanned examinees, which can provide a dose reference for the selection of mammography equipment in the clinic. Methods In this study, using a 400 cm3 Alderson radiation therapy (ART) breast phantom and thermoluminescent detectors (TLDs), the distribution of absorbed dose, and the average glandular dose (AGD), to the examined breasts caused by a breast CBCT scanner was measured and calculated scanner at 50 and 100 mA tube currents. Results At 50 and 100 mA tube currents, the range of breast absorbed dose inside the examined breast measured based on the phantom was 2.25-7.97 mGy and 3.88-15.68 mGy, respectively, with breast absorbed dose decreasing from the periphery to the centre of the phantom, and the related AGDs were 4.87 and 9.81 mGy, respectively. Conclusions The AGDs to the breast of CBCT-scanned examinees measured in this study was higher than in the case of commonly used digital mammography. This will be meaningful to provide the guidance on the rational choice of imaging equipment in future clinical practice. |
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