1. An apparatus for examination and visualization of an object of interest, wherein the apparatus comprises a display, an input device, and a calculation unit adapted for performing the following steps: acquiring a first data set; acquiring a second data set; fusing the first and second data sets; determining image parameters entered by means of the input device, related to at least one of an image plane, an angle of view, a contrast and a transparency; and rendering an image on the basis of the data sets and the determined parameters, resulting in a combined image with selected areas of transparency and selected areas of visible contrast information, wherein the image is visualized on the display.