Surgery – Truss – Pad
Patent
1992-09-03
1994-03-15
Jaworski, Francis
Surgery
Truss
Pad
A61B 800
Patent
active
052938700
ABSTRACT:
An improved ultrasonic pulse-echo method and apparatus that has particular application in making precision measurements of compressibility in any backscattering material, in particular organic tissue, is disclosed. The method employs a standard transducer or transducer containing device which is translated transaxially, thereby compressing or displacing a proximal region of a target body in small known increments. At each increment, a pulse is emitted and an echo sequence (A-line) is detected from regions within the target along the sonic travel path or beam of the transducer. Resulting time shifts in echo segments corresponding to features in the target, corrected for regions of varying sonic speed along the sonic path, provide relative and quantitative information concerning the strain caused by the compressions. The stress imparted by the transducer and containing device is also determined, corrected for depth along the sonic path. The appropriate values for stress are divided into the respective values for strain along each path to yield an elastogram, or array of compressibility values, of the target.
REFERENCES:
patent: 2894595 (1959-07-01), Brown
patent: 3942381 (1976-03-01), Brown et al.
patent: 4244226 (1981-01-01), Green et al.
patent: 4361154 (1982-11-01), Pratt, Jr.
patent: 4383533 (1983-05-01), Bhagat et al.
patent: 4434661 (1984-03-01), Miwa et al.
patent: 4492117 (1985-01-01), Chubachi
patent: 4566460 (1986-01-01), Sato et al.
patent: 4580574 (1986-04-01), Gavish
patent: 4669482 (1987-06-01), Ophir
patent: 4702258 (1987-10-01), Nicholas et al.
patent: 4716765 (1988-01-01), Hirama
patent: 4745808 (1988-05-01), Hagen
patent: 4781199 (1988-11-01), Hirama et al.
patent: 4805622 (1989-02-01), Riedlinger et al.
patent: 4807635 (1989-02-01), Ophir
patent: 4878500 (1989-11-01), Ophir et al.
patent: 4947851 (1990-08-01), Sarvazyan
patent: 4976267 (1990-12-01), Jeffcott et al.
patent: 5086775 (1992-02-01), Parker et al.
Boucher et al., Analysis of Discrete Implementation of Generalized Cross Correlator, IEEE Trans. Acoust., Speech and Sig. Proc. ASSP-29, 609-611 (1981).
Chu and Raeside, Fourier Analysis of the Echo-Cardiogram, Phys. Med. Biol. 23, 100-105 (1978).
Dickinson and Hill, Measurement of Soft Tissue Motion Using Correlation Between A Scans, Ultrasound Med. Biol. 8, 263-271 (1982).
Eisensher et al., La Palpation Echographique Rythmec-Echosismographie, Journal de Radiologie 64, 255-261 (1983).
Goodman, Some Fundamental Properties of Speckle, J. Opt. Soc. Am 66, 1145-1150 (1976).
Gore et al. Dynamic Autocorrelation Analysis of A Scans in vivo, Ultrasonic Tissue Characterization II, M. Linzer, ed. NBS, Spec. Publ. 525, 275-280 (U.S. Government Printing Office, Washington, D.C., 1979).
Hatta et al., Ultrasonic Elastic Constants of Muscle, Japanese Journal of Applied Physics, vol. 23, supp. 23-1, 66-68 (Tokyo, Japan 1984).
Hayashi, A New Method of Measuring In Vivo Sound Speed in the Reflection Mode, J. Clin. Ultrasound 16, 87-93 (Feb. 1988).
Hill et al., Ultrasonic Remote Palpation (URP): Use of Shear Elastic Modulus to Differentiate Pathology, J. Ultrasound Med., Abstract #2013 (Oct. 1988).
Kondo et al., A Fundamental Evaluation of In Vivo Velocity Measurement by Crossed Beam Method, 1986, 2419, Japanese Journal of Applied Physics, vol. 25, Supp. 25-1, 100-102.
Kontonassios and Ophir, Variance Reduction of Speed of Sound Estimation in Tissues Using Beam Tracking Method, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. UFFC-34, No. 5, 524-530 (Sep. 1987).
Kossoff et al., A Sonographic Technique to Reduce Beam Distortion by Curved Interfaces, Ultrasound Med. Biol. 15, 375-382 (1989).
Krouskop et al., Non-invasive Measurement of Stiffness of Soft Tissue Using an Ultrasonic Perturbator, Conference Abstract, Houston Society for Engineering in Medicine and Biology, 94 (Feb. 1990).
Krouskop et al., A Pulsed Doppler Ultrasonic System for Making Noninvasive Measurements of the Mechanical Properties of Soft Tissue, J. Rehabil. Res. Dev. 24, 1-8 (1987).
Lerner et al., "Sonoelasticity" Images Derived from Ultrasound Signals in Mechanically Vibrated Tissues, Ultrasound Med. Biol. 16, 231-239 (1990).
Lerner et al., Detection of Hard Tumors by Sonoelasticity Imaging: Initial Results, Abstracts, Ultrasonic Imaging and Tissue Characterization Symposium, 139.
Lerner et al., Sonoelasticity in Ultrasonic Tissue Characterization and Echographic Imaging, Proc. 7th Eur. Comm. Workshop, J. M. Thijssen, ed., Nijmegen, The Netherlands (Oct. 1987).
Levinson, The Ultrasonic Investigation of Dynamic Muscle Elasticity in Vivo, Abstracts of presentations for the American Institute of Ultrasound in Medicine Proceedings, J. Ultrasound Med., Abstract #2005 (Oct. 1988).
Levinson, Ultrasound Propagation in Anisotropic Soft Tissues: The Application of Linear Elastic Theory, J. Biomech 20, 251.sub.]260 (1987).
Ophir and Lin, A Calibration-Free Method for Measurement of Sound, Speed and Biological Tissue Samples, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 35, No. 5, 573-577 (Sep. 1988).
Ophir et al., Optimization of Speed-of-Sound Estimation from Noisy Ultrasonic Signals, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 36, No. 1, 16-24 (Jan. 1989).
Ophir et al., Elimination of Diffraction Error in Acoustic Attenuation Estimation via Axial Beam Translation, Ultrasonic Imaging 10, 139-152 (1988).
Parker et al., Tissue Response to Mechanical Vibrations for "Sonoelasticity Imaging", Ultrasound Med. Biol. 16, 241-246 (1990).
Pozniak et al., Clinical Efficacy of Kitecko Ultrasonic Conductor, Investigative Radiology 24, 128-132 (1989).
Robinson et al., Measurement of Velocity of Propagation From Ultrasound Pulse-Echo Data, Ultrasound in Med. & Biol., vol. 8, No. 4, 413-420 (1982).
Saada, Elasticity, Theory and Applications, Ch. 14 (Pergamon Press, N.Y. 1974).
Tristam et al., Application of Fourier Analysis to Clinical Study of Patterns of Tissue Movement, Ultrasound Med. Biol. 14, 695-707 (1988).
Tristam et al., Ultrasonic Study of in vivo Kinetic Characteristics of Human Tissues, Ultrasound Med. Biol. 12, 927-937 (1986).
Wilson and Robinson, Ultrasonic Measurement of Small Displacements and Deformations of Tissues, Ultrasonic Imaging 4, 71-82 (1982).
Yagi et al., Local Displacement Analysis of Inhomogeneous Soft Tissue by Spatial Correlation of RF Echo Signals, J. Ultrasound Med., Abstract #2028 (1988).
Yamakoshi et al., Ultrasonic Imaging of Internal Vibration of Soft Tissue under Forced Vibration, Proc. Sec. Joint Mtg. of ASA and ASJ, Abstract RR-12 (Nov. 1988).
Yamakoshi et al., Tissue Characterization by Time Mapping of Internal Movement Using Forced Vibration, Abstracts, Ultrasonic Imaging and Tissue Characterization Symposium, 139.
VanPelt, Subtle Tumors Found with New Ultrasound, Insight, 45 (May 14, 1990).
Cespedes Ignacio
Ophir Jonathan
Ponnekanti Hari
Board of Regents , The University of Texas System
Jaworski Francis
LandOfFree
Method and apparatus for elastographic measurement and imaging 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 elastographic measurement and imaging, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for elastographic measurement and imaging will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1530762