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Related Experiment Videos

Electrical impedance tomography for imaging tissue electroporation.

Rafael V Davalos1, David M Otten, Lluis M Mir

  • 1Biomedical Engineering Laboratory, Department of Mechanical Engineering, 6178 Etcheverry Hall, University of California at Berkeley, Berkeley, CA 94720-1740, USA. rvdaval@sandia.gov

IEEE Transactions on Bio-Medical Engineering
|May 11, 2004
PubMed
Summary

Electrical impedance tomography (EIT) visualizes electroporation, a technique for delivering molecules into cells. This advancement offers real-time control for targeted molecular medicine and biotechnology applications.

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Area of Science:

  • Biotechnology
  • Molecular Medicine
  • Biophysics

Background:

  • Electroporation uses electric pulses to temporarily permeabilize cell membranes for molecule delivery.
  • Current tissue electroporation lacks real-time monitoring of the electroporation extent and degree.
  • This limits precise control in molecular medicine and biotechnology applications.

Purpose of the Study:

  • To develop and demonstrate a method for real-time imaging of tissue electroporation.
  • To integrate ex vivo experimental data with numerical simulations and image reconstruction algorithms.
  • To validate the use of electrical impedance tomography (EIT) for visualizing electroporation in situ.

Main Methods:

  • Implementation of a "front-tracking" analysis for image reconstruction.

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  • Incorporation of new ex vivo experimental data into numerical simulations of electroporation.
  • Generation of images using the developed reconstruction algorithm to visualize the electroporated area.

    • Main Results:

    • Demonstrated that electrical impedance tomography (EIT) can successfully generate an image of the electroporated area.
    • Validated the feasibility of using EIT for monitoring electroporation procedures.
    • Showcased the integration of experimental data with advanced simulation and reconstruction techniques.

    Conclusions:

    • Combining EIT with electroporation provides real-time visualization of the molecular delivery process.
    • This integrated technique offers potential for precise, targeted delivery of therapeutic molecules in predetermined body areas.
    • EIT-enhanced electroporation represents a significant advancement for biotechnological and medical applications.