Ultrasonic emulsion fluids

Details Ultrasonic emulsion fluids Ultrasonic emulsion fluids

1983-06-27

1985-09-24

Howell, Kyle L.

Compositions

Preservative agents

Anti-corrosion

436 8, 128660, B01J 1300

Patent

active

045427453

ABSTRACT:
An ultrasonic emulsion fluid is provided for use in ultrasonic probes of medical ultrasonic diagnostic systems, in which the fluid couples ultrasonic energy between a transducer and human tissue. The emulsion outer phase is a water and velocity enhancer mixture. Suitable enhancers include alcohols such as ethylene glycol, propylene glycol, or glycerol. The suspended phase of the emulsion is an oil phase such as a silicone fluid. The silicone fluid droplets in the emulsion exhibit an average size which provides the emulsion with desired attenuation characteristics over a given band of ultrasonic frequencies.

REFERENCES:
patent: 4277367 (1981-07-01), Madsen et al.
patent: 4391281 (1983-07-01), Green
Edmonds, P. D. et al., "A Human Abdominal Tissue Phantom", Ultrasonic Tissue Characterization II, M. Linzer ed., NBS Spec. Publ., 525, US GPO, Wash., D.C., 1979.
Allegra, Jr. et al., "Attenuation of Sound in Suspension and Emulsion: Theory & Exp.", J. Acoust. Soci. Amer., vol. 51, No. 5, (1972), pp. 1545-1564.

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