Ultrasonic imaging method with multiple pulse cancellation
Patent 5902243 Issued on May 11, 1999. Estimated Expiration Date: 
April 15, 2018. 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.
April 15, 2018. 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 ReferencesUltrasonic echograph with controllable phase coherence Phase imaging and myocardial performance Mean squared speed and myocardial performance Ultrasound imaging system employing phase inversion subtraction to enhance the image Ultrasonic diagnostic imaging with harmonic contrast agents Patent #: 5706819 InventorsApplicationNo. 061083 filed on 04/15/1998US Classes:600/443, Anatomic image produced by reflective scanning600/447Electronic array scanningExaminersPrimary: Lateef, Marvin M.Assistant: Imam, Ali M. Attorney, Agent or FirmForeign Patent References
International ClassA61B 8/0/0AbstractAn ultrasound imaging method includes the step of transmitting two ultrasonic transmit pulses into a region. First components of the transmit pulses are inverted with respect to each other while second components of the transmit pulses are not. Received ultrasound pulses associated with the transmit pulses are summed to selectively cancel the harmonic or fundamental components. By properly selecting the inverted and noninverted portions of the transmit pulses, the transmit pulses may be made unipolar, or they may be pre-distorted to further reduce second harmonic energy associated with system or tissue non-linearities. | |
