Surgery – Truss – Pad
Patent
1994-06-17
1995-10-03
Manuel, George
Surgery
Truss
Pad
A61B 800
Patent
active
054543720
ABSTRACT:
Method for providing a blood flow velocity display of blood flow in a blood vessel in an ultrasound imaging system by converting spectral Doppler mode data using estimates of blood flow angle and blood flow velocity. In particular, an embodiment of a first aspect of the present invention is a method which includes the steps of: (a) transmitting an acoustic beam to a region of interest in the blood vessel from a first sub-aperture array in a transducer array; (b) receiving a first echo beam from the region of interest at the first sub-aperture array, which first echo beam is generated by the acoustic beam, and a second echo beam from the region of interest at a second sub-aperture array, which second echo beam is generated by the acoustic beam; (c) estimating a first mean Doppler frequency from the first echo beam substantially in parallel with the step of estimating a second mean Doppler frequency from the second echo beam, both steps of estimating utilizing an auto-correlation algorithm; (d) estimating the angle of blood flow and blood flow velocity in the region of interest in the blood vessel from the first and second mean Doppler frequencies; (e) obtaining data to provide a spectral Doppler mode display; (f) converting the dam to provide a blood flow velocity distribution; and (g) displaying the blood flow velocity distribution along with the estimated blood flow angle.
REFERENCES:
patent: 4103679 (1979-08-01), Aronson
patent: 4265126 (1981-05-01), Papadofrangakis et al.
patent: 4416286 (1983-11-01), Iinuma et al.
patent: 4493216 (1985-01-01), Hassler
patent: 4930513 (1990-06-01), Mayo et al.
patent: 4937797 (1990-06-01), Snyder et al.
patent: 5038788 (1991-08-01), Satake
patent: 5107841 (1992-04-01), Sturgill
patent: 5386830 (1995-02-01), Powers et al.
Angle Independent Ultrasonic Detection Of Blood Flow, G. E. Trahey, J. W. Allison, & O. T. Von Ramm, IEEE Trans. Biomed. Eng. vol. BME-34, No. 12, Dec. 1987. pp. 965-967.
Vector Doppler: Accurate Measurement Of Blood Velocity In Two Dimensions, J. R. Overbeck, K. W. Beach, and D. E. Strandness, Ultrasound In Med. & Biol. vol. 18, No. 1, pp. 19-31, 1992.
Two-Dimensional Vector Velocity Mapping In Diagnostic Ultrasound, P. J. Phillips, Dissertation Proposal, 1992, Dept. Biomed. Eng. Duke University.
A Triangulation Method for the Quantitative Measurement of Arterial Blood Velocity Magnitude and Direction in Humans, Ultrasound in Med. & Biol. vol. 16, No. 5, pp. 499-509, 1990.
Overestimation of Velocity and Frequency Values by Multi-element Linear Array Dopplers, R. J. Daigel, A. Thomas Stavros, and R. M. Lee, J. Of Vascular Tech. 14(5), pp. 206-213, 1990.
New Method for Ultrasonic Doppler Probe Angle Determination, T. Tamuva and A. Fronek, J. Biomed. Eng. vol. 10, May 1988, pp. 271-274.
Clinical Blood Flow Measurement, Edited by Dr. J. Woodcock, Year Book Medical Publishers, Inc., Chicago, Ill., pp. 28-32.
A Double Beam Doppler Ultrasound Method For Quantitative Blood Flow Velocity Measurement, W. Weiqi and Y. Lin-Xin, Ultrasound in Med. & Biol. vol. 8, No. 4, pp. 421-425, 1982.
Determination of Volume of Arterial Blood Flow by An Ultrasonic Device, S. Uematsu, J. Clin. Ultrasound, pp. 209-216, Jun. 1981.
Multiple Crossed Beam Ultrasound Doppler Velocimetry, M. D. Fox, IEEE. Trans. Sonics and Ultra. vol. SU-25, No. 5, Sep. 1978, pp. 281-286.
Banjanin Zoran B.
Shahmirian Varaz
Manuel George
Siemens Medical Systems Inc.
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