The invention relates to a computer-implemented medical method for determining a virtual flight-path (1) with respect to a virtual representation (2) of at least one anatomical structure, the method comprising executing, on a processor of a computer, the steps of:—acquiring, on the processor, patient image data describing at least one patient image showing at least one anatomical structure of a patient; —acquiring, on the processor, atlas data describing at least one model of the at least one anatomical structure; —determining, by the processor and based on the patient image data and the atlas data, representation data describing a virtual representation of the at least one anatomical structure; —acquiring, on the processor, requirement data describing at least one requirement for at least one flight-path (1); and—determining, by the processor and based on the representation data and the requirement data, flight-path data describing at least one virtual flight-path (1) with respect to the virtual representation (2) of the at least one anatomical structure.