发明名称 |
Ultrasonic diagnostic apparatus capable of acquiring high quality image by correcting phase distortion contained in ultrasonic pulses |
摘要 |
In an ultrasonic diagnostic apparatus, ultrasonic propagation time differences contained in echo signals reflected from a biological body under medical examination are corrected by comprising: a quadrature phase detecting unit for quadrature-phase-detecting the echo signals derived from an ultrasonic transducer probe to obtain as phase data a quadrature signal component and an in-phase signal component; a delay-time correcting value calculating unit for calculating at least one of delay-time correcting values used for the energizing signals and the echo signals based upon both of the quadrature signal component and in-phase signal component; and, a delay controlling unit for controlling at least one of delay time data previously given to the energizing signals anti echo signals based upon one of calculated delay-time correcting values.
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申请公布号 |
US5348013(A) |
申请公布日期 |
1994.09.20 |
申请号 |
US19910750599 |
申请日期 |
1991.08.28 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
KANDA, RYOICHI;SUMINO, YOICHI |
分类号 |
A61B8/14;G01S7/52;(IPC1-7):A61B8/00 |
主分类号 |
A61B8/14 |
代理机构 |
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地址 |
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