Pulse centroid echo method and apparatus for enhanced sound velo

Details Pulse centroid echo method and apparatus for enhanced sound velo Pulse centroid echo method and apparatus for enhanced sound velo

1986-07-21

1989-02-28

Jaworski, Francis J.

Surgery

Truss

Pad

73597, 73602, A61B 1000

Patent

active

048076350

ABSTRACT:
A method and apparatus of enhancing the accuracy of in vivo sound velocity estimation by identifying segments of different sound velocity along a tracked ultrasound beam. The effects of refraction on the tracked beam at the interface between tissue regions are estimated. Also disclosed is a technique for estimating the refractive effects of naturally occurring and artificially introduced acoustical contrast fluids. The accuracy of the sound velocity measurements is increased by utilizing the centroid-to-centroid distance between the pulses produced by ultrasound sending and receiving transducers in calculating the ultrasound beam velocity.

REFERENCES:
patent: 3388372 (1968-06-01), De Witz
patent: 4395909 (1983-08-01), Steinberg et al.
patent: 4625555 (1986-12-01), Fujii
patent: 4669482 (1987-06-01), Ophir

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