Method for enhancing the accuracy of in vivo sound velocity esti

Details Method for enhancing the accuracy of in vivo sound velocity esti Method for enhancing the accuracy of in vivo sound velocity esti

1986-01-28

1988-10-18

Jaworski, Francis J.

Surgery

Truss

Pad

73597, A61B 1000

Patent

active

047779586

ABSTRACT:
A method 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.

REFERENCES:
patent: 3388372 (1968-06-01), De Witz
patent: 4395909 (1983-08-01), Steinberg et al.
patent: 4566459 (1986-01-01), Umemura et al.
patent: 4625555 (1986-12-01), Fujii
patent: 4653505 (1987-03-01), Iinuma
patent: 4669482 (1987-06-01), Ophir
Flax, S. W. et al., "Spectral Characterization and Attenuation Measurement", UTS Imaging, vol. 5, pp. 95-116 (1983).
Bhagat, P. K. et al., "Microprocessor UTS Tissue Characterization", Med. Instrumentation, vol. 14, No. 4, Jul.-Aug. 1980, pp. 220-223.

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