发明名称 |
Ultrasonic blood flow measuring apparatus. |
摘要 |
<p>An ultrasonic blood flow measuring apparatus comprising:
an ultrasonic probe (11) for transmitting an ultrasonic beam into a tissue under examination in response to an electrical driving pulse and for receiving an ultrasonic echo reflected from the tissue to convert the same into an electrical signal;a pulse generator arragement (15-1, 15-2, ... 15-n) for generating the electrical driving pulse of said probe (11);a detector circuit (20) for detecting a tomogram signal from the electrical signal;a Doppler signal processing circuit (24) for extracting Doppler frequency shift components due to velocity of a blood flow in the tissue from the electrical signal;a marker signal generator (34) for generating marker signals indicative of a location where velocity of the blood flow is measured and a direction of the ultrasonic beam which contains the Doppler frequency shift components;an arithmetic circuit (35) for calculating an angle 0 defined between a direction of the blood flow and the direction of the ultrasonic beam which contains the Doppler frequency shift components;a divider circuit (31) for obtaining the velocity of the blood flow in accordance with the Doppler frequency shift components and the angle 8; anda display device (22) for displaying a tomogram of the tissue and markers in response to the tomogram signal and the marker signals, respectively.</p> |
申请公布号 |
EP0033977(A2) |
申请公布日期 |
1981.08.19 |
申请号 |
EP19810100927 |
申请日期 |
1981.02.10 |
申请人 |
TOKYO SHIBAURA DENKI KABUSHIKI KAISHA |
发明人 |
IINUMA, KAZUHIRO;SEO, YASUTSUGU;SATO, SHIGERU |
分类号 |
A61B8/00;A61B8/06;A61B8/14;G01F1/66;G01S7/52;G01S15/89;(IPC1-7):61B10/00;01S7/62;01P5/00;01F1/66 |
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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