Radiation dose measurement for breast cone-beam CT-scanned examinees based on ART phantom of breast
10.3760/cma.j.cn112271-20240205-00044
- VernacularTitle:基于仿真乳房模体的乳腺锥形束CT受检者辐射剂量测量
- Author:
Ke XUE
1
;
Hui XU
;
Zechen FENG
;
Baorong YUE
;
Yanqiu DING
;
Zhaoxiang YE
Author Information
1. 中国疾病预防控制中心辐射防护与核安全医学所 辐射防护与核应急中国疾病预防控制中心重点实验室，北京 100088
- Publication Type:Journal Article
- Keywords:
Breast cone-beam computed tomography;
Thermoluminescent detector;
Average glandular dose;
Radiation dose
- From:
Chinese Journal of Radiological Medicine and Protection
2025;45(2):122-128
- CountryChina
- Language:Chinese
-
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 cm 3 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.
