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Keywords:
Breast, Mammography, Comparative studies, Diagnostic procedure, Cancer
Authors:
P. Clauser, S. Pullini, A. Linda, V. Londero, L. Tomkova, M. Bazzocchi, C. Zuiani; Udine/IT
DOI:
10.1594/ecr2015/C-1232
Aims and objectives
Use of Digital Breast Tomosynthesis (DBT) is increasing in clinical practice thanks to its ability to reduce breast tissue overlapping [1].
DBT is useful in particular in the identification of masses and distortions,
[2] and it seems to have a good performance also with microcalcifications [3],
even if the latter topic is still discussed [4].
In order to better characterize microcalcifications clusters and to have a direct comparison with previous images,
a 2D mammography is still acquired before DBT.
Thus,
patients have to undergo two examinations with a double radiation exposure.
This issue has raised concerns about the higher dose given to patients that perform both DM and DBT [5]. Methods to obtain a 2D image from DBT acquisition has been proposed [6,
7].
An alternative technique to reduce the radiation dose is acquiring a 2D mammographic image during DBT by using a variable dose geometry,
as described by Vecchio et al [8].
With this approach it is possible to obtain a complete DBT study and a low dose mammography (afterwards defined 2D central projection,
2D-CP) with a single acquisition and without double radiation exposure.
We evaluated the diagnostic accuracy of 2D-CP alone and with DBT,
compared to digital mammography (DM) alone and with DBT.