Method and ultrasound diagnostic system for processing ultrasound spectrum images

A method for processing ultrasound spectrum images and an ultrasound diagnostic system are provided to perform exact contour and peak trace by removing noise included in the ultrasound spectrum images and removing aliasing by automatically moving a base line. A method for processing ultrasound spectrum images includes the steps of: removing a noise based on a set threshold value(S100); selecting a presence range of a spectrum from a spectrum image(S200); moving a base line and converting the base line into a spectrum image from which an aliasing is removed(S300); determining a contour trace direction for the spectrum image and performing a contour trace in the determined trace direction(S400); performing a mean contour trace for the spectrum image(S500); determining a peak trace direction for the spectrum image; judging whether a peak trace is 1-peak trace or 2-peak trace(S700); performing 1-peak trace in a peak trace direction(S800); performing 2-peak trace in a peak trace direction(S1000); moving a base line to an original position(S1100); and storing 1-peak or 2-peak trace result in a memory or displaying the stored value on a display device(S1200).