Surgery – Truss – Pad
Patent
1986-05-30
1989-10-17
Jaworski, Francis J.
Surgery
Truss
Pad
73602, A61B 1000
Patent
active
048739847
ABSTRACT:
Apparatus for deriving signals indicating a condition of tissue within an area by launching spaced supersonic pulses into a body under examination and detecting the power of supersonic waves scattered from locations along a plurality of known paths. Gain control elements are provided for compensating for changes in amplitude of the scattered supersonic waves resulting from their passage through blood or tissue, the increased attenuation with frequency of the spectrum of the launched pulses and the focussing of the launched pulses. Compensation for ring-down and the attenuation of the chest wall is also provided.
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patent: 4470303 (1984-09-01), O'Donnell
patent: 4662380 (1987-05-01), Riley
Perey, J. E. et al., "Applicability of UTS Tissue Characterization for Longitudinal Assessment and Differentiation of Calcification and Fibrosis in Cardiomyopathy" JACC vol. 4, No. 1, Jul. 1984, pp. 88-95.
Shing, K. K. et al., "Scattering of UTS by Blood", IEEE BME Trans. vol. 23, #6, Nov. 1976, pp. 460-467.
Hunt Thomas J.
Melton, Jr. Hewlett E.
Miller James G.
Shoup Thomas A.
Thomas, III Lewis J.
Hewlett--Packard Company
Jaworski Francis J.
Perillo Frank R.
Timbie Donald N.
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