Fig. 1

Medio-lateral oblique views of mammograms showing different Volpara density grades with quantitative volumetric density values: A, E Grade a (3.0%), B, F Grade b (4.3%), C, G Grade c (8.6%) and D, H Grade d (24.5%)
Medio-lateral oblique views of mammograms showing different Volpara density grades with quantitative volumetric density values: A, E Grade a (3.0%), B, F Grade b (4.3%), C, G Grade c (8.6%) and D, H Grade d (24.5%)