A displaying system for displaying digital breast tomosynthesis data, the displaying system comprising: - an image providing unit for providing first and second DBT volume images of the left breast of a woman and first and second DBT volume images of the right breast of the woman, wherein the first DBT volume images correspond to at least one of a first image generation time and a first view and the second DBT volume images correspond to at least one of a second image generation time and a second view, - a navigation image providing unit for providing for each DBT volume image a respective two-dimensional navigation image (20...23), - a computer-aided detection marker providing unit for providing for each DBT volume image a set of CAD markers, wherein each CAD marker (30, 31) is associated with a set of two-dimensional locations on the respective two-dimensional navigation image (20...23) and a set of three-dimensional locations in the respective DBT volume image, - a correlation score providing unit for providing correlation scores being indicative of a likelihood that CAD markers (30, 31) of different DBT volume images of the same breast correspond to each other, - a display unit (2, 3) for displaying the navigation images and slices of the provided DBT volume images, - a user interface allowing a user to indicate a two-dimensional location on a navigation image displayed, wherein this navigation image is regarded as being an activated navigation image and the DBT volume image, for which the activated navigation image has been provided, is regarded as being an activated DBT volume image of an activated breast, - a CAD marker determination unit for determining a CAD marker associated with the indicated two-dimensional location, wherein the determined CAD marker is regarded as being an activated CAD marker, and for determining another CAD marker of the other DBT volume image of the activated breast, which corresponds to the activated CAD marker, based on the provided correlation scores, - a slice determining unit for determining a first slice position (z) defining a position of a slice of the activated DBT volume image, which includes a three-dimensional location of the activated CAD marker, and for determining a second slice position (z c) defining a position of a slice of the other DBT volume image, which includes a three-dimensional location of the other CAD marker, - a controller for controlling the display unit to display the slice of the activated DBT volume image at the determined first slice position (z) and the slice of the other DBT volume image at the determined second slice position (z c). - an image providing unit for providing first and second DBT volume images of the left breast of a woman and first and second DBT volume images of the right breast of the woman, wherein the first DBT volume images correspond to at least one of a first image generation time and a first view and the second DBT volume images correspond to at least one of a second image generation time and a second view, - a navigation image providing unit for providing for each DBT volume image a respective two-dimensional navigation image (20...23), - a computer-aided detection marker providing unit for providing for each DBT volume image a set of CAD markers, wherein each CAD marker (30, 31) is associated with a set of two-dimensional locations on the respective two-dimensional navigation image (20...23) and a set of three-dimensional locations in the respective DBT volume image, - a correlation score providing unit for providing correlation scores being indicative of a likelihood that CAD markers (30, 31) of different DBT volume images of the same breast correspond to each other, - a display unit (2, 3) for displaying the navigation images and slices of the provided DBT volume images, - a user interface allowing a user to indicate a two-dimensional location on a navigation image displayed, wherein this navigation image is regarded as being an activated navigation image and the DBT volume image, for which the activated navigation image has been provided, is regarded as being an activated DBT volume image of an activated breast, - a CAD marker determination unit for determining a CAD marker associated with the indicated two-dimensional location, wherein the determined CAD marker is regarded as being an activated CAD marker, and for determining another CAD marker of the other DBT volume image of the activated breast, which corresponds to the activated CAD marker, based on the provided correlation scores, - a slice determining unit for determining a first slice position (z) defining a position of a slice of the activated DBT volume image, which includes a three-dimensional location of the activated CAD marker, and for determining a second slice position (z c) defining a position of a slice of the other DBT volume image, which includes a three-dimensional location of the other CAD marker, - a controller for controlling the display unit to display the slice of the activated DBT volume image at the determined first slice position (z) and the slice of the other DBT volume image at the determined second slice position (z c).