| 摘要 |
PURPOSE:To provide an ultrasonic diagnostic device which can measure and display stably blood flow information without being affected by the relative speed of a probe and a measuring part due to an examinee's pulse motion, etc. CONSTITUTION:This ultrasonic diagnostic device is constituted so that an ultrasonic pulse is transmitted to an examinee from a probe 1, the Doppler component of a received reflecting signal is detected and a blood flow speed distribution is displayed. Also, this device is provided with a first Doppler frequency detecting means 12 for detecting the Doppler frequency of a blood flow reflected component based on a signal obtained by filtering the reflecting signal by MTI filters 11a, 11b, a second Doppler frequency of a tissue reflecting component based on the reflecting signal without filtering the reflecting signal by the MTI filters 11a, 11b and an arithmetic means 13 for calculating a blood flow speed based on the Doppler frequency of the blood reflected component and the Doppler frequency of the tissue reflected component. |
