Applications of ultrasound stimulated vibro-acoustography

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

Vibro-acoustography is a method of imaging and measurement that uses ultrasound to produce radiation force to vibrate objects. The radiation force is concentrated laterally by focusing the ultrasound beam. The radiation force is limited in depth by intersecting two beams at different frequencies so that there is interference between the beams at the difference frequency only at their intersection. This results in a radiation stress of limited spatial extent on or within the object of interest. The resulting harmonic displacement of the object is detected by its acoustic emission, with ultrasound Doppler measurement, or with a laser interferometer. The displacement is a complicated function of the object material parameters. However, significant images and measurements can be made with this arrangement. Vibro-acoustography can produce images of biologically relevant objects such as breast micro-calcification and vessel calcifications, heart valves, and normal arteries. Several examples of these results will be described.

Original languageEnglish (US)
Pages (from-to)1058-1061
Number of pages4
JournalProceedings of the IEEE Ultrasonics Symposium
Volume1
StatePublished - Dec 1 2003
Event2003 IEEE Ultrasonics Symposium - Proceedings - Honolulu, HI, United States
Duration: Oct 5 2003Oct 8 2003

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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