Patent · US Active

Multi-frequency harmonic acoustography for target identification and border detection

US11857373B2 · kind B2 · utility

0Cited by

14References

14Claims

0Family size

Assignee

The Regents of the University of California · US

Inventors

Warren S. Grundfest · Los Angeles, US
Maie A. St. John · Los Angeles, US
Ashkan Maccabi · Sylvia Park, US
George Saddik · Newbury Park, US
Zachary Taylor · Los Angeles, US

Key dates

Filing date	Apr 3, 2019
Grant date	Jan 2, 2024
Priority date	—
Expiry date	Aug 3, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG01S7/52042
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A vibro-acoustography imaging system that generates a map of the mechanical response of a target to an acoustic radiation force, usually in low kHz range by a confocal geometry. The system generates two focused sinusoidal beams to produce a stress field at the beat frequency, which is a function of vibration and acoustic emissions field in terms of mechanical properties. A highly sensitive hydrophone is then used for detection of the acoustic emissions field, the amplitude of which may be correlated to the mechanical properties of the target tissue.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.