Ultrasonic detection of contrast agents
Patent 5456257 Issued on October 10, 1995. Estimated Expiration Date: 
November 23, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 23, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and apparatus for the measurement and medical treatment using an ultrasonic wave Method of measuring regional tissue blood flow Methods of and systems for examining tissue perfusion using ultrasonic contrast agents Method to opacify left ventricle in echocardiography Patent #: 5302372 InventorsAssigneeApplicationNo. 344266 filed on 11/23/1994US Classes:600/458Contrast enhancementExaminersPrimary: Jaworski, Francis J.Attorney, Agent or FirmInternational ClassA61B 008/00AbstractAn ultrasonic diagnostic system is provided which detects the presence of coated microbubble contrast agents in the body of a patient by transmitting ultrasonic energy which causes the destruction of the coated microbubbles and detects the microbubble destruction through phase insensitive detection and differentiation of echoes received from two consecutive ultrasonic transmissions. The destruction of a microbubble can also be used as a point source of acoustic energy for aberration correction, whereby the timing of the beamformer is adjusted from an analysis of beamformer signals resulting from a detected microbubble destruction event. | |
