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Color doppler-type ultrasonic diagnostic apparatus

  • US 5,441,052 A
  • Filed: 12/27/1993
  • Issued: 08/15/1995
  • Est. Priority Date: 12/28/1992
  • Status: Expired due to Term
First Claim
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1. A color Doppler-type ultrasonic diagnostic apparatus having an ultrasonic pulse beam transmitted from a transducer of a transmitting means along a cross section to be scanned toward an object being examined and containing a moving target therein, a Doppler shift frequency detected on the basis of the ultrasonic pulse beam echoed from the moving target and received by a receiving means for one of a plurality of sampling points of the cross section, and a tomographic image of the cross section displayed on a monitor, the apparatus comprising:

  • means for calculating movement information including a direction and a magnitude of velocity of the moving target for each of the sampling points on the basis of the detected Doppler shift frequency;

    means for specifying a reference direction on the tomographic image of the cross section;

    means for forming data of a color sample showing a directional relation between the calculated direction and the specified reference direction;

    means for creating two-dimensional color display data of the calculated velocities at the plurality of sampling points on the basis of the directional relation; and

    means for color-displaying at least the created two-dimensional color display data together with the formed data of the color sample.

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