Method for providing image support to a practitioner in the interventional treatment of a target area in a patient, including the following steps: - acquisition of a three-dimensional subtraction angiography image data set including a target region of the patient that includes the target area, - selection of a region of interest in the subtraction angiography data set, which region includes the target area, - defining an imaging geometry that implements a projection direction for acquiring two-dimensional fluoroscopic images for monitoring the intervention using an X-ray device, - determination of the image-obscuring blood vessels (5, 6) that superimpose the region of interest in the imaging geometry, and of imaging zones that show fractions of the image-obscuring blood vessels (5, 6) in the imaging geometry without superimposition by other blood vessels by forward projection of the subtraction angiography data set in the projection direction, - defining path information relating to the image-obscuring blood vessels (5, 6) at least in the zone around the region of interest and in the imaging zones, and input of the path information into a two-dimensional forward projection data set, - acquisition of a fluoroscopic image in the imaging geometry, - determination of the pixels that show the image-obscuring blood vessels (5, 6) in the fluoroscopic image by means of the information relating to the path, and of image intensity information from the intensities measured on the pixels in the fluoroscopic image, - subtraction from the fluoroscopic image in the region of interest, of a masked image of the image-obscuring blood vessels (5, 6) acquired by means of the path information in region of interest and the image intensity information and - display of the fluoroscopic image that has been modified in this way. - acquisition of a three-dimensional subtraction angiography image data set including a target region of the patient that includes the target area, - selection of a region of interest in the subtraction angiography data set, which region includes the target area, - defining an imaging geometry that implements a projection direction for acquiring two-dimensional fluoroscopic images for monitoring the intervention using an X-ray device, - determination of the image-obscuring blood vessels (5, 6) that superimpose the region of interest in the imaging geometry, and of imaging zones that show fractions of the image-obscuring blood vessels (5, 6) in the imaging geometry without superimposition by other blood vessels by forward projection of the subtraction angiography data set in the projection direction, - defining path information relating to the image-obscuring blood vessels (5, 6) at least in the zone around the region of interest and in the imaging zones, and input of the path information into a two-dimensional forward projection data set, - acquisition of a fluoroscopic image in the imaging geometry, - determination of the pixels that show the image-obscuring blood vessels (5, 6) in the fluoroscopic image by means of the information relating to the path, and of image intensity information from the intensities measured on the pixels in the fluoroscopic image, - subtraction from the fluoroscopic image in the region of interest, of a masked image of the image-obscuring blood vessels (5, 6) acquired by means of the path information in region of interest and the image intensity information and - display of the fluoroscopic image that has been modified in this way.