| 摘要 |
PROBLEM TO BE SOLVED: To maintain a high frame rate and to prevent distortion of picture or emergence of virtual image by implementing a vacant space of display by means of signals acquired before and after each vacancy that is generated between image, and Doppler because of the alternate acquisition of image signal and Doppler signal. SOLUTION: Image signals and Doppler signals are acquired alternately. An estimated value of Doppler frequency is transmitted to a spectral space charger 36 that makes spectrum displaying sample which is used for implementing a vacant interval when the spectrum predictor does not provide effective Doppler information. Implemented flow of Doppler samples is transmitted to an image processor 38, then the spectral Doppler display is made. An acoustic space charger 42 implements the time-rag up to the acquisition of Doppler signal with compounded signal information. Implemented flow of signals is transmitted to a direction processor 44 that coverts a longitudinal direction of flow into a displaying signal in order to process the form of acoustic spectrum. |
