Blood flow pressure measurement technique employing injected bubbled and ultrasonic frequency scanning
    13.
    发明授权
    Blood flow pressure measurement technique employing injected bubbled and ultrasonic frequency scanning 失效
    使用注射式超声波和超声波扫描的血液流量测量技术

    公开(公告)号:US3640271A

    公开(公告)日:1972-02-08

    申请号:US3640271D

    申请日:1969-06-30

    Applicant: IBM

    Inventor: HORTON JOHN W

    CPC classification number: A61B8/06 A61B8/04 A61B8/481

    Abstract: A nonsurgical technique of measuring blood characteristics of pressure and flow by injecting minute gas bubbles into the bloodstream. The bubbles are subjected to a beam of ultrasonic radiation and flow is determined by detecting the resultant scattering which is indicative of the time taken for the bubble to pass between two points, while blood pressure is determined by varying the frequency of the ultrasonic beam to determine the resonant frequency of the bubbles which is proportional to pressure.

    Abstract translation: 通过将微小气泡注入血液中来测量压力和流量的血液特性的非手术技术。 气泡受到超声波束的影响,并且通过检测所得到的散射来确定气流,该散射指示气泡在两点之间所需的时间,同时通过改变超声波束的频率来确定血压,以确定 与压力成比例的气泡的共振频率。

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