Ultrasonic flow imaging
November 4, 2011. 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 imaging system Ultrasonic imaging system Ultrasonic imaging system Ultrasonic imaging system Dynamic array aperture and focus control for ultrasonic imaging systems Duplex ultrasonic imaging system with repetitive excitation of common transducer in doppler modality Directional detection of blood velocities in an ultrasound system Quantitative volume blood flow measurement by an ultrasound imaging system featuring a Doppler modality Measurement of true blood velocity by an ultrasound system Quantitative volume backscatter imaging InventorApplicationNo. 787422 filed on 11/04/1991US Classes:600/454, Blood flow studies600/455Pulse DopplerExaminersPrimary: Kamm, William E.Assistant: Manuel, George Attorney, Agent or FirmForeign Patent References
International ClassA61B 008/06AbstractA phased array sector scanning ultrasonic imaging system produces simultaneously, and samples, three receive beams for each transmitted ultrasonic pulse directed upon flowing reflectors. Flow velocity is measured in the cross range direction using a correlation technique while flow velocity in the range direction is simultaneously measured using a Doppler method. By performing cross correlation in both the range and cross range directions with data acquired from a set of such multi-beam acquisitions, a B-scan image is produced which indicates both magnitude and direction of the flowing reflectors.Other References
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