| 摘要 |
PROBLEM TO BE SOLVED: To provide a PRF control method and device for obtaining the optimum PRF, and an ultrasonographic apparatus with the PRF control apparatus. SOLUTION: According to a Doppler shift of an ultrasonic echo, the speed distribution of an echo source is obtained, the profile of the speed distribution is obtained (172), folding of the profile is corrected (174), and in the corrected profile, the maximum value of speed is detected (176), and according to the detection result, PRF of transmission wave of the ultrasonic wave is controlled (178). |
