1. A method for displaying image data acquired with a medical imaging system, the steps comprising: a) reconstructing a 3D image data set with the acquired image data; b) producing an index image by projecting the 3D image data set; c) displaying the index image on a display device; d) producing a cursor on the display device which enables manual selection of a region of interest in the 3D image data set; e) receiving input data which indicates the number of 2D sectional images to be produced; f) receiving input data which indicates the spatial orientation of the 2D sectional images; g) producing the 2D sectional images by extracting corresponding image data from the region of interest in the 3D image data set; and h) displaying the 2D sectional images on a display device.