Columbia subject headings:
Breast--Cancer--Diagnosis--Congresses.
Breast--Radiography--Congresses.
Radiography, Medical--Digital techniques--Congresses.
Harvard subject headings:
Breast--Cancer--Diagnosis--Congresses
Breast--Radiography--Congresses.
Breast--Radiography--Data processing--Congresses.
Radiography, Medical--Digital techniques--Congresses
Princeton subject headings: