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http://worldcat.org/entity/work/id/1163770594

Method and apparatus to characterize ultrasonically reflective contrast agents

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  • ""A method and apparatus for characterizing the time and frequency response of an ultrasonically reflective contrast agent is disclosed. An ultrasonically reflective contrast agent is injected, under constant pressure1 into a fluid flowing through a pump flow circuit. The fluid and the ultrasonically reflective contrast agent are uniformly mixed in a mixing chamber, and the uniform mixture is passed through a contrast agent chamber. The contrast agent chamber is acoustically and axially interposed between an ultrasonic transducer chamber and an acoustic isolation chamber. A pulse of ultrasonic energy is transmitted into the contrast agent chamber from the ultrasonic transducer chamber. An echo waveform is received from the ultrasonically reflective contrast agent, and it is analyzed to determine the time and frequency response of the ultrasonically reflective contrast agent. Novelty is believed to reside in both the entire method and the apparatus."--P. i."

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  • "Method and apparatus to characterize ultrasonically reflective contrast agents"
  • "Method and apparatus to characterize ultrasonically reflective contrast agents"@en

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