MULTI-FREQUENCY ULTRASONIC IMAGING AND THERAPY

WIPO Patent Application WO1999040847

A3

Ultrasound imaging apparatus comprising: a first source of ultrasound energy at a first frequency which irradiates a region of a body; a second source of ultrasound energy at a second frequency which irradiates said region of the body, wherein the energy at the first and second frequencies at the region are sufficient to cause energy at at least one of a third frequency and a fourth frequency to be generated in the region, said third frequency being the difference between the first and second frequencies and the fourth frequency being the sum of the first and second frequencies; and a directional antenna which receives energy at one of the third and fourth frequencies from the region and provides an image signal in response thereto.

FRIEDMAN ZVI (IL)
WEINREB ABRAHAM (IL)

PCT/IL1999/000064

December 23, 1999

February 01, 1999

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TXSONICS LTD (IL)
FRIEDMAN ZVI (IL)
WEINREB ABRAHAM (IL)

A61B8/08; A61N7/02; G01S7/52; G01S15/89; A61B17/34; A61N7/00; (IPC1-7): A61N7/02; G01S7/52; G01S15/89; A61B8/08

WO1993019705A1

1993-10-14

US5601086A	1997-02-11
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US4174635A	1979-11-20
US5624382A	1997-04-29
US4622972A	1986-11-18
EP0332871A2	1989-09-20

FATEMI M ET AL: "C-SCAN IMAGING BY RADIATION FORCE STIMULATED ACOUSTIC EMISSION METHOD", PROCEEDINGS OF THE 1996 IEEE ULTRASONICS SYMPOSIUM, SAN ANTONIO, NOV. 3 - 6, 1996, vol. 2, 3 November 1996 (1996-11-03), INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, pages 1459 - 1462, XP000753607

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