Meeting Banner
Abstract #3467

Measuring Electrical Conductivity at Low Frequency Using the Eddy Currents Induced by the Imaging Gradients.

Astrid L.H.M.W. van Lier1, Cornelis A.T. van den Berg1, Ulrich Katscher2

1Radiotherapy, UMC Utrecht, Utrecht, Netherlands; 2Philips Research Europe, Hamburg, Germany

The complex permittivity (ε*) of biological tissues depends on their biochemical composition and the applied frequency. In this study we investigate a method that measures the tissue conductivity in the biologically interesting low frequency (LF,=Hz-kHz) range. A first implementation of this method LF-EPT is based on similar reconstruction principles as MR-CDI, but it employs the imaging gradient instead of electrodes to induce (eddy) currents. First experiments show that this method is feasible in phantoms.