Blood pool imaging and analysis technique using ultrasound
November 8, 2010. 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 ReferencesArrangement for measuring cross-sectional fluctuations of conduits streamed through by fluids and for supplying indications of volumetric flow and/or conduit elasticity based thereon Quantitative volume blood flow measurement by an ultrasound imaging system featuring a Doppler modality Ultrasonic imaging apparatus for color display of flow velocity Methods of and apparatus for positioning and aiming an ultrasonic probe Ultrasonic imaging apparatus utilizing doppler flow metering Ultrasonic diagnosing system Echo tracking system for apparatus for ultrasonic measurement of the position of a mobile wall Patent #: 4966150 InventorAssigneeApplicationNo. 613318 filed on 11/08/1990US Classes:600/454, Blood flow studies600/456With volumetric measurementExaminersPrimary: Jaworski, Francis J.Assistant: Manuel, George Attorney, Agent or FirmInternational ClassA61B 008/00AbstractA blood pool imaging and analysis technique and apparatus uses ultrasound to examine areas of interest within the human body. The Doppler effect is used to determine the velocity of blood and tissue movement. Color flow imaging is used to display the moving blood pools and tissue by representing movement toward the transducer as one color, movement away from the transducer as a second color and movement which is outside of the sampling limits as a third color. Since the blood pool movement generally exceeds the rate at which the heart or organ walls move in creating the blood movement, the sampling limits can be adjusted so that the blood pool movement is outside of the limits. The resulting image of the blood pool movement, in the third color, can be used to calculate heart function parameters such as the ejection fraction.Other References
Field of SearchULTRASOUND 3-D IMAGING | |
