| 摘要 |
PURPOSE: To accurately measure bloodstream speed even in a slow speed bloodstream by eliminating a relative speed-component between an examinee and a probe in an ultrasonic Doppler diagnosing device. CONSTITUTION: A relative speed estimating part 12 as a means to estimate by calculating the relative speed of the examinee and the probe 1 by fetching complex signals S1 , S2 obtained in Doppler detecting parts 4a, 4b is provided. Also, a complex multiplier 13 is provided as a means to eliminate the relative speed component of the examinee and the probe 1 from the frequency spectrum of a Doppler detection signal by inputting the estimated value of the relative speed from the relative speed estimating part 12 and inputting the Doppler detection signal obtained in the Doppler detecting parts 4a, 4b. In this way, it is possible to accurately measure the bloodstream speed even in the slow speed bloodstream by eliminating the relative speed component of the examinee and the probe 1. |
