Patent ID: 7713198

Claim:
An ultrasonic diagnostic equipment comprising: an ultrasonic probe which includes piezoelectric transducers for transmitting/receiving ultrasonic pulses to and from a mobile object within a patient; a transmission/reception device configured to drive the piezoelectric transducers so as to transmit the ultrasonic pulses at unequal intervals, including a first interval and a second interval longer than the first interval, in a predetermined scan direction during transmission, and such that the ultrasonic pulses transmitted at the first interval are adjacent ultrasonic transmissions, and to receive the ultrasounds from the predetermined scan direction to obtain information for one frame; a Doppler signal detection device configured to execute a filtering process for a plurality of reception signals obtained in time series at the unequal intervals from a predetermined position within the body by said transmission/reception device, thereby to detect Doppler signals based on the mobile object; a velocity calculation device configured to select Doppler signals adjacent to each other at the first interval from among the plurality of Doppler signals obtained at the unequal intervals by said Doppler signal detection device, and which calculates a velocity of the mobile object on the basis of the selected Doppler signals; and an image data generation device configured to generate velocity image data on the basis of the velocity of the mobile object as calculated by said velocity calculation device.