Patent ID: 6899679

Claim:
An ultrasonic diagnostic apparatus for scanning a subject to be examined with an ultrasonic pulse, the apparatus comprising: transmitting means for transmitting the ultrasonic pulse a plurality of times along each scanning line so as to scan during each time of scanning a region in the subject, transmission characteristics of ultrasonic pulses transmitted along each scanning line during each time of scanning of the region being changed from one another; receiving means for receiving an ultrasonic echo signal of each ultrasonic pulse reflected or scattered in the subject and acquiring an electrical reception signal corresponding to each ultrasonic echo signal; filter means for applying filtering processing to each reception signal acquired by the receiving means, characteristics of the filtering processing applied to each of the reception signals acquired along each scanning line during each time of scanning of the region being changed from one another and being respectively related in frequency domains to the transmission characteristics of the ultrasonic pulses transmitted along each scanning line during each time of scanning of the region; synthesizing means for synthesizing the plurality of reception signals, scanning line by scanning line, filtering-processed by the filter means; producing means for producing image data of the region using the reception signals synthesized by the synthesizing means; and display means for displaying the image data produced by the producing means.