Department of Radiological Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 145111, Riyadh 4545, Saudi Arabia.
Department of Radiology and Medical Imaging, Prince Sattam Bin Abdulaziz University, Al-Kharj 16278, Saudi Arabia.
Radiat Prot Dosimetry. 2024 Apr 4;200(5):467-472. doi: 10.1093/rpd/ncae007.
The aim of this study was to report the diagnostic reference levels (DRLs) corresponding to different compressed breast thickness (CBT) ranges. To achieve this, mammographic examinations with 187,788 exposures were analysed. The mean average glandular (AGD) dose was calculated per view, examination, and center. Moreover, the DRL values corresponding to different CBT ranges were reported. The result of the mean AGD per view was found to be 1.36 mGy for craniocaudal (CC) and 1.54 mGy for Mediolateral oblique (MLO), while the mean AGD per examination for all women was 1.45 mGy. The DRL values corresponding to CBTs between 20 to 79 mm ranges were below 2 mGy. These results were from a population of mean age = 49 ± 8 years and mean CBT = 58 ± 8 mm, and was imaged with mean exposures of 29 ± 1 kVp and 74 ± 31 mAs, and a mean compression force of 135±37 N. In conclusion, good mammography practice has been shown, as DRL values are within the limits suggested by the international organizations.
本研究旨在报告不同压缩乳腺厚度（CBT）范围对应的诊断参考水平（DRL）。为此，对 187788 次曝光的乳腺摄影检查进行了分析。按每例、每检查和每个中心计算平均腺体剂量（AGD）。此外，还报告了不同 CBT 范围对应的 DRL 值。结果发现，头尾位（CC）的平均 AGD 为 1.36 mGy，内外斜位（MLO）的平均 AGD 为 1.54 mGy，而所有女性的平均 AGD 为 1.45 mGy。CBT 为 20 至 79 mm 范围内的 DRL 值低于 2 mGy。这些结果来自于平均年龄为 49±8 岁，平均 CBT 为 58±8 mm 的人群，平均曝光量为 29±1 kVp 和 74±31 mAs，平均压缩力为 135±37 N。总之，DRL 值在国际组织建议的范围内，表明实施了良好的乳腺摄影实践。
