| Wang Qinghong,Wang Xiaocheng,Cai Min,Wang Jianming.Study on the correlation between radiation dose and breast compression thickness and density in full-field digital mammography combined with digital breast tomosynthesis[J].Chinese Journal of Radiological Medicine and Protection,2022,42(8):645-650 |
| Study on the correlation between radiation dose and breast compression thickness and density in full-field digital mammography combined with digital breast tomosynthesis |
| Received:March 04, 2022 |
| DOI：10.3760/cma.j.cn112271-20220304-00083 |
| KeyWords:Digital breast tomosynthesis Mammography Average glandular dose Compression thickness Breast density |
| FundProject:山西省科技厅社会发展项目（201903D321025） |
| Author Name | Affiliation | E-mail | | Wang Qinghong | Department of CT Radiology, Shanxi Provincial People's Hospital, Taiyuan 030012, China | | | Wang Xiaocheng | Department of Medical Record Statistics, Shanxi Provincial People's Hospital, Taiyuan 030012, China | | | Cai Min | Department of Nuclear Medicine, Shanxi Provincial People's Hospital, Taiyuan 030012, China | | | Wang Jianming | Department of CT Radiology, Shanxi Provincial People's Hospital, Taiyuan 030012, China | 332854663@qq.com |
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| Abstract:: |
| Objective To compare and analyze the relationship between average glandular dose (AGD) and breast density and compression thickness in digital breast tomosynthesis(DBT)/full-field digital mammography(FFDM), and to explore the optimal selection and application of imaging parameters for different types of breast (thickness and density) in specific situations.Methods The clinical data of 229 cases of breast Combo (DBT+FFDM) were retrospectively analyzed. The compression thickness, AGD, kVp and type of quantified breast density (Q_abd) of CC and MLO view were collected respectively. The relationship between the AGD and the breast compression thickness and Q_abd density classification was analyzed.Results There was a positive correlation between AGD and compression thickness (CC:r=0.55, 0.53, P< 0.001; MLO:r=0.62, 0.48, P< 0.001) and breast density(CC:r=0.36, 0.39, P< 0.001; MLO:r=0.16, 0.30, P < 0.001) in DBT/FFDM. The difference between groups for AGD was little in CC of DBT, but significant in CC of FFDM(groups by thickness, CC:F=35.29, 31.32, P<0.005; MLO:F=44.83, 27.02, P<0.005;groups by Q_abd, CC:F=18.68, 19.76, P<0.005, MLO:F=4.58, 10.52, P<0.005); the breast Q_abd was inversely proportion to the mean compression thickness (CC:F=16.28, P<0.005; MLO:F=17.81, P<0.005). At the same time, the interaction effect on AGD between the breast density and thickness was considered, and only for the MLO in FFDM mode they had an interaction on AGD (F=3.16, P=0.005).Conclusions The cumulative dose of DBT and FFDM may increase the radiation risk. Single-view CC/MLO-DBT or CC/MLO-(DBT+FFDM)+single-view MLO/CC-FFDM mode is preferred for mammography, which plays a positive role in radiation risk reduction. |
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