is noted that the console 100 may include also more than two units or devices depending on the intended treatment the x ray device 400 includes an x ray source 420 as well as a detector for x ray radiation 440 wherein both the x ray source 420 as well as the x ray detector 440 are arranged at a c arm 430 to ensure a proper orientation of both relative to each other the patient 300 may be positioned at a table 460 the processing unit 600 includes first of all a control unit 620 and further a monitor 610 wherein an output of information with respect to the current location of for example a tip of an instrument may be shown on said monitor the processing unit 600 may further comprise a processing device or working memory on which a computer program to perform the vascular roadmapping according to the invention may be stored and or executed fig4 shows an example of a fluoroscopy image as generated in step s 3 of the above described method in step s 4 the portion 220 of an instrument may be detected wherein in step s 6 a mask 500 is created which surrounds the.