| ZHAO Yong-xia,LIANG Guang-lu,XU Ying-jin,et al.Comparison of different exposure modes with full-field digital mammography: image quality versus radiation dose[J].Chinese Journal of Radiological Medicine and Protection,2011,31(1):102-104 |
| Comparison of different exposure modes with full-field digital mammography: image quality versus radiation dose |
| Received:July 20, 2009 |
| DOI：10.3760/cma.j.issn.0254-5098.2010.04.031 |
| KeyWords:Full-field digital mammography Exposure mode Image quality Radiation dose |
| FundProject: |
| Author Name | Affiliation | | ZHAO Yong-xia | Department of Radiology, Affiliated Hospital of Hebei University, Baoding 071000, China | | LIANG Guang-lu | Department of Radiology, Affiliated Hospital of Hebei University, Baoding 071000, China | | XU Ying-jin | Department of Radiology, Affiliated Hospital of Hebei University, Baoding 071000, China | | TIAN Xiao | Department of Radiology, Affiliated Hospital of Hebei University, Baoding 071000, China | | YIN Xiao-ping | Department of Radiology, Affiliated Hospital of Hebei University, Baoding 071000, China |
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| Abstract:: |
| Objective To study the difference of image quality and radiation dose between different exposure modes with full-field digital mammography(FFDM). Methods The Fluke18-220 mammographic phantom was exposed by FFDM system with different exposure modes at automatic exposure control (AEC), including contrast mode, standard mode and dose mode, and the exposure factors and radiation dose were recorded. The images on monitor with the best window width and window level were read by four independent radiologists. The images of specks groups,nylon fibers and masses was assessed by the four experienced readers at the criterion of American College of Radiology. Results The detection of specks groups,nylon fibers and masses were statistically different at the contrast mode and standard mode ( F =41.321, P ＜0.05), further at the contrast mode and dose mode. The detection of specks groups、nylon fibers and masses were not statistically different( P ＞0.05) at standard mode and dose mode, but the radiation doses were different. The ESD at standard mode and dose mode was 4.5 and 3.15 mGy, respectively. The AGD of standard mode and dose mode was 1.18 mGy and 0.78 mGy, respectively. Conclusions The standard mode and dose mode of FFDM might be fit for most patients, especially at the dose mode. Contrast mode of FFDM should be strictly controled in use. |
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