Ultrasonic diagnostic apparatus and data processing method therefor

A data processing method for an ultrasonic diagnostic apparatus, the method comprising:

• an ultrasonic data acquisition step for acquiring a plurality of pieces of ultrasonic data by performing a plurality of times of ultrasonic transmitting/receiving operations in a same sound ray direction and at predetermined time intervals;
• a data extraction step for acquiring data corresponding to a same predetermined depth, out of the plurality of pieces of ultrasonic data acquired in the ultrasonic data acquisition step;
• a filtering step for inputting the plurality of pieces of data corresponding to the same predetermined depth, acquired in the data extraction step, into predetermined filters, and extracting echo data from a moving reflector including a blood flow;
• a first amplitude value calculating step for calculating a first autocorrelation amplitude value based on the echo data, when the echo data from the moving reflector, extracted in the filtering step, is delayed by a first predetermined time period;
• a second amplitude value calculating step for calculating a second autocorrelation amplitude value based on the echo data, when the echo data from the moving reflector, extracted in the filtering step, is delayed by a second predetermined time period;
• and
• a colorization step for relating an average value obtained by averaging, using an averaging processor, the first autocorrelation amplitude value by the second autocorrelation amplitude value, to the luminance of a predetermined hue.