Patent ID: 6773403
Filing Date: 2004-08-10
Classification: A61B,G01S

Abstract:
An ultrasound diagnostic apparatus for measuring a velocity component of tissue and blood flow within a human body, comprising:a sample data generator for generating sample data by transmitting ultrasound signals to and sampling echo signals reflected from the human body; generating means for generating frequency distribution data containing the velocity component of tissue and blood flow by processing the sample data, wherein the frequency distribution data contains a plurality of frequency components, each of which has a power level; detecting means for extracting the frequency distribution data corresponding to the velocity component of tissue flow from the frequency distribution data, by using a maximum value of the velocity component of blood flow; and a display coupled to the detecting means for displaying the extracted frequency distribution data, wherein the detecting means further comprises: input means for inputting the frequency distribution data containing the velocity component of tissue and blood flow; eliminating means for eliminating a direct-current (DC) component of the frequency distribution data; extracting means for extracting the velocity component of blood flow from the frequency distribution data; determining means for determining a maximum value of the extracted velocity component of blood flow; a gain level decider responsive to the determined maximum value for deciding a gain level; and a multiplier for multiplying the frequency distribution data by the decided gain level.