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Ultrasonic diagnosing apparatus

  • US 4,622,978 A
  • Filed: 12/04/1984
  • Issued: 11/18/1986
  • Est. Priority Date: 12/05/1983
  • Status: Expired due to Fees
First Claim
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1. An ultrasonic measuring apparatus for determining information concerning the blood flow of a living subject to be examined comprising:

  • a transducer probe for contact with the exterior surface of the subject;

    Doppler transducer means, mounted on said transducer probe, for transmitting a continuous ultrasonic wave toward the subject along a fixed, first beam for intersection with the blood flow within the subject;

    a transducer array of ultrasonic elements, mounted on said transducer probe proximate said Doppler transducer means, for receiving ultrasonic echos of the continuous ultrasonic wave which are reflected from the blood flow along a variable, second beam which intersects said first beam at an intersection point located within the blood flow of the subject;

    scanning means, coupled with said transducer array, for selectively varying the direction of said second beam to adjust the intersection point of said first and second beam and thereby adjust the depth of the intersection point within the subject;

    processing means, coupled with said Doppler transducer means and said transducer array, for processing signals from said Doppler transducer and said transducer array to provide a signal indicative of the velocity of the blood flow within the subject at the intersection point; and

    indication means, coupled with said processing means, for providing an output of information indicative of the velocity of the blood flow within the subject at the intersection point.

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