Scanning rheo-magneto-acoustic method of current imaging in volume conductors

Bruce C. Towe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

It can be shown that acoustic waves are generated when oscillating magnetic fields are applied to tissue supporting ionic current flows. These acoustic waves result from predictable and relatively well understood Lorentz forces. At microampere biological current levels and with 1-kHz and 0.2-T magnetic fields, the forces are on the order of 10-10 N and thus the acoustic responses are weak but readily detectable using microphones in small objects. This principle has been used in conjunction with a magnetic field scanning system to produce images of the flow of ion currents in 2 cm × 2 cm × 3 mm conductors.

Original languageEnglish (US)
Title of host publicationIEEE/Engineering in Medicine and Biology Society Annual Conference
Place of PublicationPiscataway, NJ, United States
PublisherPubl by IEEE
Pages991
Number of pages1
Volume10
Editionpt2
StatePublished - Nov 1988
EventProceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society - New Orleans, LA, USA
Duration: Nov 4 1988Nov 7 1988

Other

OtherProceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CityNew Orleans, LA, USA
Period11/4/8811/7/88

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Towe, B. C. (1988). Scanning rheo-magneto-acoustic method of current imaging in volume conductors. In IEEE/Engineering in Medicine and Biology Society Annual Conference (pt2 ed., Vol. 10, pp. 991). Publ by IEEE.