Patent ID: 6442235
Filing Date: 2002-08-27
Classification: A61B

Abstract:
A method of imaging the blood flow as a function of time in an object (3) to be examined, which method includes the following steps:a) acquisition of a series of X-ray projection images (Di; Ej) during administration of a contrast medium to the blood vessels in the object (3) to be examined, b) acquisition of an image data set (H; K) containing the course of the blood vessels in the object (3) to be examined, c) segmentation of the regions of the blood vessels in the individual X-ray projection images (Di; Ej) that are filled with contrast medium, d) encoding the image data set (H; K) in time by comparing the image data set (H; K) with the segmented X-ray projection images (Djâ€²; Fj), the image data set (H; K) including an X-ray image data sub-set (Hâ€²) having pixels (Pk) representative of information concerning the course of blood vessels, from which one or more pixel sub-sets (Mj) are acquired; and e) displaying one or more images (B) formed from the time-encoded image data set (Hâ€²; R) based on the one or more pixel sub-sets (Mj) and representing the blood flow as a function of time.