Patent ID: 6532380
Filing Date: 2003-03-11
Classification: A61B,A61F,A61M,G06T

Abstract:
A method for generating a visual image of a lumen of a coronary vessel and a device moving within the vessel, the method comprising:inserting radiopaque material into the vessel; obtaining a time series of images containing the vessel; and decomposing the time series of images into a sum of multiple moving layers wherein decomposing the time-series of images comprises selecting a reference image from an image frame within a first time-series of images; calculating from the first time-series of images a first motion function which maps each image to the reference image; calculating, by applying the first motion function for each image, a first layer image which is a time-average of the images moved into alignment with the reference image; generating a sequence of residual images by subtracting the first layer image from each image of the original sequence; calculating subsequent layer images by repeating the steps of selecting a reference image, calculating a motion function, calculating a layer image, and generating a sequence of residual images.