发明名称 |
DUPLEX ULTRASONIC IMAGING SYSTEM WITH REPETITIVE EXCITATION OF COMMON TRANSDUCER IN DOPPLER MODALITY |
摘要 |
A duplex imaging system with a common transducer array for both modes of operation satisfies the conflicting bandwidth requirements by single impulse excitation of the transducer in B-scan imaging operation to generate a wide bandwidth ultrasound pulse and multiple impulse excitation at the emission frequency in Doppler mode operation to generate a narrow bandwidth ultrasound phase. The multiple impulse excitation has a variable repetition frequency depending on range to a sample volume and velocity of blood flow. A Doppler modality, in which the frequency shift of echoes caused by flow of blood is measured to derive the flow velocity, is incorporated into a sector scanner with little additional complexity. |
申请公布号 |
DE2966753(D1) |
申请公布日期 |
1984.04.12 |
申请号 |
DE19792966753 |
申请日期 |
1979.08.14 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
PAPADOFRANGAKIS, EMMANUEL;FAKIRIS, JOHN ACHILLES;ENGELER, WILLIAM EDWARD |
分类号 |
A61B8/00;A61B8/06;A61B8/14;G01S15/89;(IPC1-7):A61B10/00 |
主分类号 |
A61B8/00 |
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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