Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Patent
1998-03-26
2000-08-01
Jaworski, Francis J.
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
600455, A61B 806
Patent
active
060959770
ABSTRACT:
A method and an apparatus for improving the signal-to-noise ratio (SNR) and/or resolution in color flow ultrasound imaging by using complementary-coded excitation of the transducer array. The SNR is improved by transmitting a pair of Golay-coded pulse sequences in alternating sequence at the same transmit focal position over multiple firings and then partly decoding the beamsummed data. The partly decoded data is then vector summed and high pass filtered. The summed and high-pass-filtered data is optionally decimated by a factor of two. The decimated or undecimated data is then input to the parameter estimator, which provides imaging signals representing the flow in a scan plane. Those imaging signals are then displayed as color information on a display monitor.
REFERENCES:
patent: 4320765 (1982-03-01), Cathignol et al.
patent: 5014712 (1991-05-01), O'Donnell
patent: 5022400 (1991-06-01), Walters
patent: 5363851 (1994-11-01), Hall et al.
patent: 5632277 (1997-05-01), Chapman et al.
patent: 5706819 (1998-01-01), Hwang et al.
Takeuchi, "Chirped Excitation for <100dB Time Sidelobe Echo Sounding," Proc. 1995 IEEE Ultrasonics Symp., pp. 1309-1314.
Takeuchi, "Coded Excitation for Harmonics Imaging", Proc. 1996 IEEE Ultrasonics Symp., pp. 1433-1436.
Welch, "Pulse Compression Ultrasound for Minimization of Transmitted Peak Power", Proc. 20th Annual Northeast Bioengineering Conference, Springfield, MA.
Welch et al., "Sidelobe Suppressed Spread Spectrum Pulse Compression for Ultrasonic Tissue Imaging,"IEEE Trans. Ultrasonics, Ferroelec. & Freq. Control (accepted for publication 1997).
Lee et al., "High-Speed Digital Golay Code Flaw Detection System," Proc. 1981 Ultrasonics Symp., pp. 888-891.
Hayward et al., "A Digital Hardware Correlation System for Fast Ultrasonic Data Acquisition in Peak Power Limited Applications," IEEE Trans. Ultrason. Ferroelec. Freq. Cont., vol. 35, No. 6, Nov. 1988, pp. 800-808.
Mayer et al., "Three-Dimensional Imaging System Based on Fourier Transform Synthetic Aperture Focusing Technique," Ultrasonics, vol. 28, Jul. 1990, pp. 241-255.
Takeuchi, "An Investigation of a Spread Energy Method for Medical Ultrasound Systems. II. Proposed System and Possible Problems," Ultrasonic, vol. 17, Sep. 1979, pp. 219-224.
O'Donnell, "Coded Excitation System for Improving the Penetration of Real-Time Phased-Array Imaging Systems," IEEE Trans. Ultrason. Ferroelec. Freq. Cont., vol. 39, No. 3, May 1992, pp. 341-351.
Chiao Richard Y.
Hall Anne Lindsay
Muzilla David John
Cabou Christian G.
Flaherty Dennis M.
Jaworski Francis J.
Price Phyllis Y.
LandOfFree
Method and apparatus for color flow imaging using Golay-coded ex does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for color flow imaging using Golay-coded ex, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for color flow imaging using Golay-coded ex will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-659042