Doppler velocity processing method and apparatus
Patent 4800891 Issued on January 31, 1989. Estimated Expiration Date: 
November 13, 2007. 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 13, 2007. 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 ReferencesMethods and apparatus for measuring the cross-sectional area of a duct and the volume flow rate of fluid in the duct Pulsed doppler flow mapping apparatus Displaying a single parameter image Patent #: 4697594 InventorAssigneeApplicationNo. 07/120577 filed on 11/13/1987US Classes:600/455, Pulse Doppler73/861.25Reflection or scattering of acoustic wavesExaminersPrimary: Jaworski, Francis J.Attorney, Agent or FirmInternational ClassesA61B 8/06 (20060101)G01S 15/00 (20060101) G01S 15/89 (20060101) AbstractMethod and apparatus for developing an estimation of the velocity of a moving target, comprising, transmitting groups of pulse signals towards the target, receiving groups of echo signals caused by reflections of the transmitted groups of pulse signals from the target and spatially processing the echo signals for developing the estimation of the velocity of the target. In a preferred embodiment, the spatial processing is for only a single pair of adjacent ones of ultrasonic echo signals and the estimation developes a two dimensional image of blood flow velocities in the body of a patient. | |
