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US 5,706,819 AGranted
Ultrasonic diagnostic imaging with harmonic contrast agents
AssigneeAdvanced Technology Laboratories, Inc.
InventorsJuin-Jet Hwang, David Hope Simpson
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Abstract
Apparatus and methods are disclosed for the detection and imaging of ultrasonic harmonic contrast agents. The harmonic echo effect is detected through alternate polarity acquisition of harmonic contrast agent effects, which provides the benefits of suppressing the harmonic components of the transmitted signal while eliminating clutter.
Claims4
A method of ultrasonically detecting the ultrasonic response of an ultrasonic contrast agent comprising the steps of:
- transmitting a first ultrasonic pulse to said ultrasonic contrast agent to cause a first harmonic response;
- transmitting a second ultrasonic pulse of a different polarity than said first ultrasonic pulse to said harmonic contrast agent to cause a second harmonic response;
- detecting said first and second harmonic responses;
- and
- combining said first and second harmonic responses.
2 more elements
Dependencies are inferred from the claim text.