Meeting Banner
Abstract #3778

Optical Dipole Probes for Quantitative Electric Field Measurements Up to 7T

Jens Groebner1, Reiner Umathum1, Stefan Hoffmann1, Moritz Cornelius Berger1, Michael Bock1, Florian Martin Meise1, Wolfhard Semmler1, Jaane Rauschenberg1

1Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany

Up to now, E-field probes have been presented for relative SAR estimation. In this work, an optical dipole-controller system was developed, to measure absolute E-field values. The dipole probe was calibrated in a custom built Crawford TEM cell to assure the accuracy of the measured E-field values. The new probe can determine E-fields between 65 and 643.5 V/m, which could be demonstrated of a known 7 T head coil.