The present invention relates to a method for generating a complete medical image data set from an incomplete image data set, comprising the method steps of: providing a first image data set which represents an image of a first region of a body, including at least a part of the surface of the body, at a first point in time providing a second, incomplete image data set which represents an image of a second region of the body at a second point in time, wherein the first region and the second region overlap providing a third data set which represents the contour of the body in the form of points on the surface of the body, substantially at the second point in time adapting the first image data set to the second image data set by taking into account the third data set and accepting the adapted first image data set as a complete image data set.
