Department of Radiologic Sciences, Faculty of Allied Health Sciences, Kuwait University, Sulaibekhat, Kuwait.
Department of Community Medicine & Behavioral Sciences, Faculty of Medicine, Kuwait University, Sulaibikhat, Kuwait.
J Med Radiat Sci. 2020 Sep;67(3):185-192. doi: 10.1002/jmrs.405. Epub 2020 Jun 3.
There are increasing concerns about radiation exposure among women who undergo full-field digital mammography (FFDM) and digital breast tomosynthesis (DBT). The main aim of this study was to compare the entrance surface dose (ESD) and average glandular dose (AGD) from FFDM and DBT for different breast thicknesses.
The ESD and AGD for FFDM in craniocaudal, mediolateral oblique and DBT in craniocaudal projection were recorded from a GE Senographe Essential FFDM unit. The accuracy of the ESD and AGD from the FFDM unit was verified during regular quality assurance programme. Patients were categorised according to their compressed breast thicknesses. X-ray tube potential and target filter combinations were varied with ESD and AGD recorded directly from the FFDM unit. The non-parametric Kruskal-Wallis, Mann-Whitney and Wilcoxon signed-rank tests were performed.
The median and interquartile range (IQR) age of the patients were 48 and 11 years, respectively. The highest median for ESD and median total AGD for different breast thicknesses were ranged from 3.3 to 9.1 mGy and 3.3 to 6.0 mGy, respectively, for two-view FFDM. However, it ranged from 3.1 to 8.9 mGy and 1.8 to 4.0 mGy, respectively, for single-view DBT. Both ESD and AGD were significantly lower for DBT (P < 0.001) compared with FFDM. There was a significant difference (P = 0.001) in the ESD and AGD values for different breast thicknesses in FFDM and DBT techniques.
The AGD for a single-view DBT was lower than the two-view FFDM technique.
越来越多的人对接受全数字化乳腺摄影（FFDM）和数字乳腺断层合成（DBT）的女性的辐射暴露感到担忧。本研究的主要目的是比较不同乳房厚度下 FFDM 和 DBT 的体表入射剂量（ESD）和平均腺体剂量（AGD）。
从 GE Senographe Essential FFDM 单元记录了头尾方向、内外斜位 FFDM 和头尾方向 DBT 的 ESD 和 AGD。在常规质量保证计划中验证了 FFDM 单元的 ESD 和 AGD 准确性。根据患者的压缩乳房厚度对患者进行分类。改变 X 射线管电压和靶滤过组合，直接从 FFDM 单元记录 ESD 和 AGD。采用非参数 Kruskal-Wallis、Mann-Whitney 和 Wilcoxon 符号秩检验。
患者的中位和四分位间距（IQR）年龄分别为 48 岁和 11 岁。不同乳房厚度的 ESD 和总 AGD 中位数的最高值范围分别为 3.3 至 9.1 mGy 和 3.3 至 6.0 mGy，用于双视图 FFDM；然而，单视图 DBT 的范围分别为 3.1 至 8.9 mGy 和 1.8 至 4.0 mGy。与 FFDM 相比，DBT 的 ESD 和 AGD 均显着降低（P <0.001）。FFDM 和 DBT 技术中不同乳房厚度的 ESD 和 AGD 值存在显着差异（P = 0.001）。
单视图 DBT 的 AGD 低于双视图 FFDM 技术。
