Method for creating image recordings of blood vessel system of a patient, comprising: after administering contrast agent an image recording is created in a first image recording region of a first position of a detector, the diffusion of the contrast agent is observed to determine a current diffusion position; the position of the detector is changed to a second position as a function of the current diffusion position; an image recording of a second image recording region of the second position of the detector is created; and a part of an image recording in the first position extending in the region between the current diffusion position and the end of the first image recording region and recorded without contrast agent is used as a mask to evaluate a locationally correlated part, recorded with contrast agent, of the image recording in the second position for digital subtraction angiography.