| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonographic instrument capable of displaying a bloodstream at a slow speed. SOLUTION: The ultrasonographic instrument comprises an ultrasonic probe for repeatedly transmitting and receiving an ultrasonic wave in a predetermined frequency, a means for controlling a predetermined repeating frequency of the transmitting and receiving waves, a means for detecting a Doppler deviation signal from the obtained received signal, an MTI filter for attenuating a low-frequency component from the deviation signal after detecting, a means for removing a phase deviation component regarding a body motion of a subject from the deviation signal after low-frequency attenuation, a means for displaying a moving image of a reflector at the ultrasonic image obtained from the received signal, and a means for setting a parameter of removing the body motion based on the predetermined frequency. |
