发明名称 |
Ultrasonic imaging apparatus |
摘要 |
An ultrasonic imaging apparatus comprises an ultrasonic transducer for emitting ultrasonic pulses at a rate frequency fr and converting an echo wave of the ultrasonic pulses into an echo signal, an orthogonal detector circuit for orthogonally detecting an echo signal provided from the ultrasonic transducer and a calculator circuit for obtaining Doppler data from the orthogonal detection signal and providing color Doppler data. The output of the calculator circuit is coupled to an interpolator circuit. When the interpolator circuit receives color Doppler data at a frequency above +fr/2 or -fr/2 from the calculator circuit, it interpolates the Doppler data according to a predetermined argorithm for excluding interpolation data corresponding to a zero region between +fr/2 and -fr/2. The color Doppler data including interpolation data is displayed as color image on the monitor.
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申请公布号 |
US4930514(A) |
申请公布日期 |
1990.06.05 |
申请号 |
US19880228195 |
申请日期 |
1988.08.04 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
BABA, TATSURO;KANDA, RYOICHI;SEO, YASUTSUGU |
分类号 |
A61B8/06;A61B8/14;G01S7/52;G01S15/89 |
主分类号 |
A61B8/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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