| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic diagnostic instrument capable of forming an ultrasonic image of high resolution and low artifact by efficiently detecting only required harmonic components. SOLUTION: In a harmonic unit 17, a subtraction part 22 is provided to extract only odd-order harmonic components. After removing fundamental wave components with a filter 24, a synthesizing part 25 synthesizes it with even-order harmonic components. |
