Color doppler-type ultrasonic diagnostic apparatus
First Claim
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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Accused Products
Abstract
A color Doppler-type ultrasonic apparatus is provided in which an ultrasonic pulse beam is transmitted, from a transducer, along a tomographic plane to be scanned toward an object containing a moving target. A Doppler shift frequency is detected on the basis of an echoed ultrasonic pulse beam for every sampling volume of the tomographic plane, and an image of the tomographic plane is displayed. The apparatus comprises an element for calculating movement information including a direction and a magnitude of velocity of the moving target for each of the sampling volumes on the basis of the detected Doppler shift frequency, an element for specifying a reference direction on the image of the tomographic plane, an element for forming data of a color sample showing a directional relation between the calculated directions and the reference direction, an element for creating data for color display of the calculated velocity for each of the sampling volumes on the basis of the directional relation; and an element for color-displaying at least the created data for color display together with the formed data of color sample.
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Citations
47 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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Specification