Patent ID: 9058664
Filing Date: 2015-06-16
Classification: A61B,G06K,G06T

Abstract:
1. A method for fusing 2D fluoroscopic images with 2D angiographic images for real-time interventional procedure guidance, said method comprising the steps of: using a 2-dimensional angiographic image to detect injection of a contrast agent into an anatomical structure, wherein the contrast agent first appears in a detected image frame; subtracting a background image from the detected image frame and binarizing the subtracted image frame to segment the anatomical structure from the subtracted image frame; registering the segmented anatomical structure with a predefined shape model of the anatomical structure to generate an anatomical mask; generating an anatomical probability map from the anatomical mask using intensity information from the subtracted image frame, wherein the anatomical probability map expresses a probability of a pixel in the subtracted image frame belonging to the anatomical structure; and fusing the angiographic image with one or more subsequently acquired 2-dimensional fluoroscopic images of the anatomical structure using the anatomical probability map to generate a fused image of the anatomical structure by calculating g(p)=g wherein the steps of using a 2-dimensional angiographic image to detect injection of a contrast agent, subtracting a background image, registering the segmented anatomical structure, generating an anatomical probability map, and fusing the angiographic image are performed by a computer.