METHOD OF QUANTIFYING ARTERIAL STAINING

摘要

Method of quantifying arterial staining from a temporal sequence of X-ray images of an area of a human body with at least one artery, each X-ray image being a grey scale image having a two-dimensional structure of pixels common to all the X-ray images, and the sequence of X-ray images having been taken during motion of a contrast liquid injected in the artery. The method comprises: dividing the common two-dimensional structure of pixels into a plurality of windows, each window comprising a plurality of contiguous pixels; calculating, for each window and each X-ray image, an average value of the grey levels of the pixels of the X-ray image within the window; and calculating, for each window, the parameters of a Rayleigh-like function (103), said calculation being performed by applying a non-linear optimization method to approximate the average values of the grey levels calculated for the window with the Rayleigh-like function (103).