Surgery – Truss – Pad
Patent
1984-11-28
1986-09-09
Howell, Kyle L.
Surgery
Truss
Pad
A61B 1000
Patent
active
046102558
ABSTRACT:
This invention relates to a system for measuring the non-linear parameter B/A of an ultrasonic medium such as a living tissue, namely the value which indicates a rate of change of the sound velocity with change of pressure, utilizing reflected ultrasonic waves. In this invention, a measuring burst pulse, having a comparatively high frequency, and a pumping pulse, having a comparatively low frequency and a high sound pressure, for giving a change of pressure are transmitted in the same direction while they are superposed, the phase of the reflected waves from each region of the ultrasonic medium is detected as a function of time, and it is then differentiated. Thereby, the distribution of B/A along the transmitting direction of said pulses can be obtained.
REFERENCES:
patent: 4431008 (1984-02-01), Wanner et al.
patent: 4513749 (1985-04-01), Kino et al.
patent: 4546772 (1985-10-01), Flax
patent: 4566460 (1986-01-01), Sato et al.
Proceedings 1st International Symposium on Medical Imaging and Image Interpretation ISMIII '82, vol., 375, IEEE Computer Society, SPIE-The International Society for Optical Engineering, 26th-28th Oct. 1982, pp. 454-459, Berlin, DE; T. Sato et al.: "Nonlinear Parameter Tomography, Active Incoherent Imaging and Adaptive Imaging for Ultrasonic Tissue Characterization".
The Journal of the Acoustical Society of Japan, vol. 39, No. 8, Aug. 1983, pp. 521-530, Acoustical Society of Japan, Tokyo, JP; N. Ichida et al. "Nonlinear Parameter Tomography".
The Journal of the Acoustic Society of America, vol. 74, No. 5, Nov. 1983, Acoustical Society of America, pp. 1518-1521, New York, US; Zheming Zhu et al.: "Determination of the Acoustic Nonlinearity Parameter B/A from Phase Measurements".
Abstract of New Technology-from the Air Force Systems Command, 10th Nov. 1981, Project No. F49620-79-C-0217, Washington, D.C., (US); G. S. Kino et al.: "Remote Three-Dimensional Temperature Probing".
Journal of the Acoustical Society of America, vol. 45, No. 5, May 1969, pp. 1251-1257, New York, US; R. C. Williamson: "Echo Phase-Comparison Technique and Measurement of Sound Velocity in Water".
1972 Ultrasonics Symposium Proceedings, IEEE Group on Sonics and Ultrasonics, 4th-7th, Oct. 1972, Boston, Mass., pp. 54-58, New York, US; T. D. Sachs et al.: "Thermo-Acoustic Sensing Technique-Tast".
Ichida Nobuyuki
Miwa Hirohide
Murakami Keiichi
Sato Takuso
Shimura Takaki
Fujitsu Limited
Howell Kyle L.
Jaworski Francis J.
LandOfFree
Ultrasonic non-linear parameter measuring system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrasonic non-linear parameter measuring system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic non-linear parameter measuring system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1010863