Ultrasonic apparatus and method for measuring the velocities of human tissues using the doppler effects

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.

A method for measuring a velocity component of a target object within a human body, comprising the steps of:

• generating sample data by transmitting ultrasound signals to the target object and sampling reflected signals;
• generating frequency distribution data containing a velocity component of the target object by processing the sample data, wherein the frequency distribution data contains a plurality of frequency components, each of which has a strength level;
• extracting frequency distribution data, corresponding to the velocity component of the target object, out of the frequency distribution data;
• and
• displaying the extracted frequency distribution data.

A method for measuring a velocity component of tissue and blood flow within a human body, comprising the steps of:

• generating sample data by transmitting ultrasound signals to and sampling echo signals reflected from the human body;
• 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;
• 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
• displaying the extracted frequency distribution data.