Benner
رائد محمد كاظم الموسوي ( مدرس )
كلية الطب - طب عام
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Radiation dose from digital breast tomosynthesis screening – A comparison with full field digital mammography
تحميل
بحث النوع:
علوم التخصص العام:
Raed M. K. M.Ali اسم الناشر:
Andrew England Andrew K. Tootell Peter Hogg اسماء المساعدين:
Elsevier الجهة الناشرة:
Journal of Medical Imaging and Radiation Sciences  
2020 سنة النشر:

الخلاصة

Abstract Objectives To compare Mean Glandular Dose (MGD) and effective dose from digital breast tomosynthesis (DBT) screening with that from full field digital mammography (FFDM) screening. Method To simulate compressed breasts, two Perspex-polyethylene breast phantoms were used, one phantom for compressed breast in craniocaudal and the other for compressed breast in mediolateral oblique. An adult ATOM dosimetry phantom was loaded with high sensitivity thermoluminescence dosimeters; the phantom was then positioned on Hologic Selenia Dimensions mammographic machine to imitate DBT and 4-view FFDM screening. Organ radiation doses were measured from 4-view DBT and 4-view FFDM (craniocaudal and mediolateral oblique views for each breast). Organ radiation doses were used to calculate effective dose from one screening session. Results MGD for DBT was 3.6 mGy; MGD for FFDM was 2.8 mGy. For DBT, other organs (e.g. thymus, lungs, salivary glands, thyroid, contralateral breast and bone marrow) radiation dose was also higher than for FFDM. The use of DBT for breast cancer screening increases the effective dose (E) of one screening session by 22%. E for DBT was 0.44 mSv; E for FFDM was 0.34 mSv. Conclusion The use of DBT for breast cancer screening increases the radiation dose to screening clients.