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.