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A study of dose and image quality with Convergence FFDM and DBT using tissue-equivalent phantom in digital mammography

유방조직등가 팬텀을 이용한 디지털유방촬영장치의 FFDM과 DBT의 선량과 영상품질에 대한 융합 연구

Yoo, Young-Sin;Han, Dong-Kyoon
유영신;한동균

  • Received : 2018.11.02
  • Accepted : 2019.02.20
  • Published : 2019.02.28

Abstract

In this study, we measure dose against various density and thickness using phantom to compare FFDM to DBT of Digital mammography equipment and evaluate usefulness of DBT through compare the image quality of FFDM and DBT. We use mammography equipment, Selenia Dimensions ; this is able to examine breast by both FFDM and DBT, The results are that when the thickness of phantom is 6cm or more and density is 70% or more and the thickness of phantom is 7cm or more and density is 50% or more, AGD of DBT is lower than that of FFDM. The evaluation results of image quality are that in the tumor and small calcification group that composed by mammary tissue and fat, FFDM is great and in fibrin, DBT is great. But in the all thicknesses of BR3D phantom that reflected overlapped tissue of breasts, DBT is great in calcification group, fibrin and tumor. DBT is greater image quality and lower dose more than FFDM in Thick and high density breast, Therefore, DBT is more useful in Korean women's breast that is characterized dense breast than FFDM.

Keywords

Mammography;Average Glandular Dose;FFDM;Tomosynthesis;DBT