Doppler imaging device
February 8, 2013. 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 ReferencesTime domain technique to determine mean frequency Correlation detection type ultrasound blood flowmeter Examining moving objects by ultrasound echograpy Ultrasonic diagnostic apparatus Pulse doppler MTI system Methods and apparatus for the examination and treatment of internal organs Apparatus and method for generating echographic images Ultrasonic flowmeter Frequency domain optical imaging using diffusion of intensity modulated radiation Ultrasound high velocity flow correlation measurement using coded pulses InventorsApplicationNo. 014856 filed on 02/08/1993US Classes:600/455Pulse DopplerExaminersPrimary: Jaworski, Francis J.Attorney, Agent or FirmInternational ClassA61B 008/06AbstractA device and method for producing an image of a fluid moving through a medium. An acoustic wave insonifies the medium to produce Doppler shifted scattering from randomly located scatterers in the moving fluid. At least eight channels of acoustic detectors detect signals reflected from the medium and the amplitudes of the scattered signal is determined at each channel for at least one Doppler shifted frequency. Time averaged channel-to-channel amplitude correlations are produced using the Doppler shifted amplitude data from which the image of the moving fluid is calculated. | |
