Ultrasonic processes and circuits for carrying out those process

Details Ultrasonic processes and circuits for carrying out those process Ultrasonic processes and circuits for carrying out those process

1994-11-01

1997-10-21

Jaworski, Francis

Surgery

Truss

Pad

A61B 800

Patent

active

056785534

ABSTRACT:
A process for selective graphic representation and/or evaluation of the Doppler spectrum of objects limitedly resistant to sonic intensity, for example biological organs and tissues, by an ultrasonic process wherein a material is introduced in the examination area to be acoustically irradiated, nonlinear oscillations are produced in the examination area by irradiated ultrasonic waves and the signal is evaluated by an ultrasonic converter. Also, a circuit for carrying out the above process is disclosed.

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Law et al., "Ultrasonic determination of the nonlinearity parameter . . . ", J. Acoust. Soc. Am. 69(4), Apr. 1981, pp. 1210-1212.

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