1. A method of generating a combined projection image from a medical inspection object, the method comprising the steps of: capturing a set of initial projection images; reconstructing a first three-dimensional volume and a second three-dimensional volume from the set of initial projection images; generating a first re-projection image from the first three-dimensional volume and a second re-projection image from the second three-dimensional volume; weighting the first re-projection image and the second re-projection image; and combining the weighted first re-projection image and the weighted second re-projection image for generating the combined projection image.