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Related Experiment Videos

Electrical impedance endo-tomography: imaging tissue from inside.

Jacques Jossinet1, Emmanuel Marry, Amalric Montalibet

  • 1National Institute for Health and Medical Research, INSERM U556, Lyon, France. jossinet@lyon151.inserm.fr

IEEE Transactions on Medical Imaging
|August 9, 2002
PubMed
Summary

This study introduces a novel multielectrode impedance probe for scanning tissue conductivity. The method shows feasibility for evaluating ultrasound ablathermy lesions in localized prostate cancer.

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Area of Science:

  • Biomedical Engineering
  • Medical Imaging
  • Electrical Impedance Tomography

Background:

  • Accurate conductivity mapping of biological tissues is crucial for medical diagnostics.
  • Ultrasound ablathermy is a promising treatment for localized prostate cancer, requiring precise evaluation methods.

Purpose of the Study:

  • To present a new multielectrode impedance probe for conductivity scanning.
  • To evaluate the feasibility of using this probe for assessing ultrasound ablathermy-induced lesions in prostate cancer.

Main Methods:

  • Development of a multielectrode impedance probe with electrodes on an insulating cylinder.
  • Theoretical analysis of current distribution and sensitivity.
  • In vitro experiments using a water tank and a 16-electrode prototype probe (50 mm diameter).

Related Experiment Videos

  • Data collection with conductivity perturbations and image reconstruction via retro-projection algorithm.

    • Main Results:

    • Demonstrated feasibility of conductivity scanning using the developed probe.
    • Presented theoretical bases and calculated sensitivity distributions.
    • Successfully reconstructed images from in vitro data with conductivity perturbations.

    Conclusions:

    • The multielectrode impedance probe method is feasible for tissue conductivity scanning.
    • Potential application in evaluating prostate cancer treatment efficacy.
    • Future improvements in data collection and image reconstruction are anticipated.