Abstract: A method is disclosed where at least one first 3D image data set is received via a first interface, the first 3D image data set including 3D images of a vascular segment of a patient at different time points. On the basis of the first 3D image data set, both a first hemodynamic parameter of the vascular segment and the spatial course of the vascular segment are then determined. This additional information enables the calculation of a digital 3D model of the stent graft on the basis of the first hemodynamic parameter of the vascular segment and on the basis of the spatial course of the vascular segment. Hence, the 3D model takes into account the first hemodynamic parameter and the spatial course so that a stent graft based on the digital 3D model is adapted individually to the anatomy of a patient via a 3D printer.