Optical E-Field Measurements in the MR Environment with High Spatial Resolution
Simon Rei 1 , Andreas Bitzer 2 , and Michael Bock 1
Radiology - Medical Physics, University
Medical Center Freiburg, Freiburg, Germany,
Technology AG, Zrich, Switzerland
The accurate and localized measurement of electric
fields in MRI is very important to assess RF safety
hazards. In this work we present a purely optical sensor
which is substantially smaller than existing dipoles to
measure E-fields with high spatial resolution in a
clinical MR system. This sensor allows for MR-safety
inspections of RF coils and even for E-field assessment
of small metallic structures such as implants or
catheters in the MRI environment.
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