| 摘要 |
<p>An ultrasonic diagnostic apparatus is provided that can achieve an excellent image quality even in the case where a subject moves at a high speed. A memory (3) stores a first signal obtained through first-time transmission/reception. When a second signal is obtained through second-time transmission/reception, a delay amount calculator (6) calculates a delay amount for either of the first and second signals based on first and second timings outputted respectively from first and second zero crossing detectors (4, 5), at which the first and second signals cross zero, respectively. Delayers (7, 8) delay the first or second signal by the calculated delay amount so that phases of the signals are matched with each other. An adder (9) adds together the two signals whose phases have been matched. <IMAGE></p> |
