Possibility of noninvasive biocurrent measurement by ultrasonic tissue resistivity modulation

Bruce C. Towe, Howard Simms

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

Abstract

It can be shown that ultrasonic waves cause subtle but detectable electrical changes in tissue during their passage. In particular, tissue resistivity changes on the order of 0.01% per atmosphere of sound pressure have been measured. The present experiments show that ionically carried electric currents in tissue when exposed to moderate sound power levels yield an amplitude-modulated signal equal in frequency to the sonic irradiation and proportional in amplitude to the electric current. This process can, in principle, allow determination of the magnitude of a biocurrent in the sound path by detection of the amplitude-modulated component via surface electrodes. This observation has potential application to the noninvasive detection of naturally occurring bioelectric currents in vivo.

Original languageEnglish (US)
Title of host publicationBiomedical Engineering Perspectives
Subtitle of host publicationHealth Care Technologies for the 1990's and Beyond
PublisherPubl by IEEE
Number of pages1
Editionpt 3
ISBN (Print)0879425598
StatePublished - Dec 1 1990
EventProceedings of the 12th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Philadelphia, PA, USA
Duration: Nov 1 1990Nov 4 1990

Publication series

NameProceedings of the Annual Conference on Engineering in Medicine and Biology
Numberpt 3
ISSN (Print)0589-1019

Other

OtherProceedings of the 12th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CityPhiladelphia, PA, USA
Period11/1/9011/4/90

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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  • Cite this

    Towe, B. C., & Simms, H. (1990). Possibility of noninvasive biocurrent measurement by ultrasonic tissue resistivity modulation. In Biomedical Engineering Perspectives: Health Care Technologies for the 1990's and Beyond (pt 3 ed.). (Proceedings of the Annual Conference on Engineering in Medicine and Biology; No. pt 3). Publ by IEEE.