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Related Experiment Videos

Quantification in impedance imaging.

D C Barber1

  • 1Department of Medical Physics and Clinical Engineering, Royal Hallamshire Hospital, Sheffield, UK.

Clinical Physics and Physiological Measurement : an Official Journal of the Hospital Physicists' Association, Deutsche Gesellschaft Fur Medizinische Physik and the European Federation of Organisations for Medical Physics
|January 1, 1990
PubMed
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Applied potential tomography (APT) creates images of electrical resistivity in tissues. This technique allows for in vivo imaging of resistivity changes, showing potential clinical applications.

Area of Science:

  • Biomedical Engineering
  • Medical Imaging
  • Electrical Engineering

Background:

  • Applied potential tomography (APT) is an imaging technique.
  • It visualizes electrical resistivity distribution in conductive objects.
  • Human tissues have diverse resistivities, suggesting potential for high-contrast imaging.

Purpose of the Study:

  • To explore the feasibility of applied potential tomography for in vivo imaging.
  • To investigate the reconstruction of electrical resistivity changes within biological tissues.
  • To identify potential clinical applications of APT.

Main Methods:

  • Utilizing voltage measurements on object surfaces with applied current patterns.
  • Developing reconstruction algorithms for tomographic imaging of resistivity.

Related Experiment Videos

  • Focusing on imaging changes in resistivity rather than absolute values.

    • Main Results:

    • Demonstrated the possibility of reconstructing images from in vivo data.
    • Showed that imaging resistivity changes is a viable approach.
    • Identified challenges in the reconstruction problem compared to other modalities.

    Conclusions:

    • Applied potential tomography can generate tomographic images of electrical resistivity.
    • In vivo imaging of resistivity changes is achievable with APT.
    • The technique holds promise for various clinical applications.