Breast, Radioprotection / Radiation dose, Mammography, Digital radiography, Conventional radiography, Computer Applications-3D, CAD, Cancer, Dosimetric comparison
S. Sethi1, E. Dhamija2, M. yadav2, S. Thulkar3, A. Gupta2; 1delhi, delhi/IN, 2New Delhi/IN, 3NEW DELHI, DELHI/IN
Aims and objectives
Digital breast tomosynthesis (DBT),
also known as 3D mammography has been widely accepted and rapidly used in combination with standard full field digital mammography (SFFDM) or 2D mammography since its approval by the US Food and Drug Administration (FDA) in 2011.
It has shown to have better clinical performance for both screening and diagnostic imaging for breast cancer .The main reason for the need for 2D mammograms in addition to DBT is better assessment of breast density,
detection and appearance of microcalcifications and comparison with previous mammograms [3-6].
Standard digital mammograms along with tomosynthesis approximately doubles the radiation dose than that of SFFDM/DBT alone though lesser than the FDA approved average glandular dose [7-8].
In May 2013,
FDA approved synthesized mammograms (Virtual 2D images) which are computer generated from the 3D DBT data as an alternative to SFFDM.
Though with the synthesized views,
there is effective reduction in the total radiation dose,
the main concern is the sufficient image quality and better or similar diagnostic performance to combo mode (SFFDM +DBT).
The purpose of our study was to compare the diagnostic performance,
dose and lesion characterisation of synthesized mammography vs.
digital 2D mammography,
both in combination with DBT.