A gamma radiation breast imaging apparatus, comprising an object positioning device, defining an imaging space and having as an intended insertion direction of the breast to be imaged, and a gamma camera positioned to image a volume in said imaging space. The gamma camera comprises a collimator with a first plurality of focused pinholes, the individual fields of view of the first pinholes defining a common central field of view having a geometrical center. The apparatus also has a gamma sensitive detector to receive images from the collimator. The first pinholes are provided non-symmetrically with respect to a first plane through said geometrical center that is perpendicular to the collimator and parallel to said intended insertion direction. Hereby, more angular information about the scanned volume can be obtained for the same detector size, in particular when combined with a similar opposite camera.
