C-scan imaging by radiation force stimulated acoustic emission method

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations

Abstract

A novel C-scan imaging method is presented. This method utilizes the radiation force to stimulate an acoustic emission by the object at low frequencies. The radiation force, which is highly localized, is produced employing two intersecting focused ultrasound beams driven by two CW sources at slightly different frequencies. The acoustic emission is generated at the difference, or the beat, frequency. This field is nondirective and is detected by a hydrophone. It is shown that the amplitude of the acoustic field is linearly proportional to the peak instantaneous ultrasound power. This has been verified experimentally using a pinhead object and two identical transducers in a water tank. C-scan images are obtained by displaying the amplitude of the acoustic field versus beam position while the object is raster scanned.

Original languageEnglish (US)
Pages (from-to)1459-1462
Number of pages4
JournalProceedings of the IEEE Ultrasonics Symposium
Volume2
StatePublished - Dec 1 1996
EventProceedings of the 1996 IEEE Ultrasonics Symposium. Part 2 (of 2) - San Antonio, TX, USA
Duration: Nov 3 1996Nov 6 1996

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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