Provided is an ultrasound diagnosis apparatus and corresponding method for analyzing and displaying a risk of plaque. It includes a data acquirer to obtain ultrasound data, an image processor configured to extract a blood vessel area from an ultrasound image generated based on the ultrasound data, to extract a plaque area and to analyze the risk of plaque based on at least one of a surface shape (uniformity) of the plaque area (smoothness index), and brightness information of the plaque area. The apparatus further includes a display. The display may e.g. display a cross-sectional ultrasound image (710), and the risk of plaque e.g. as a color coordinate (730), wherein a transverse axis represents a distribution state (Irregularity) of the brightness values in the plaque area (720), and a longitudinal axis represents a brightness level.
