SIMULTANEOUS MULTIFREQUENCY DOPPLER AND B-MODE MEASUREMENT OF THE HEART

Takaki Shimura; Shin'ichi Amemiya; Kiichi Murakami; Hajime Hayashi; Hidehiro Miwa

doi:10.2978/jsas.5.2_32

Takaki Shimura, Shin'ichi Amemiya, Kiichi Murakami, Hajime Hayashi, Hidehiro Miwa

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Keywords: Multifrequency ultrasonography, S/C ratio, simultaneous Doppler and B mode

JOURNAL FREE ACCESS

1993 Volume 5 Issue 2 Pages 32-38

DOI https://doi.org/10.2978/jsas.5.2_32

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Abstract

This study deals with the simultaneous measurements of Doppler and B-mode. The ultrasonic beam for B-mode and that for Doppler are transmitted and received perfectly at the same time. To avoid the crosstalk between two beams, the center frequencies of 2.5 and 3.5MHz are used and bandpass filters are applied. An analysis, the experimental results and the results for a normal human heart are presented.

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