Abstract #4799
Electro-optic RF magnetic resonance signal based on a Ti:LiNbO3 waveguide
Reina Ayde 1 , Anne-Laure Perrier 1 , Jean Dahdah 2 , Raphael Sablong 1 , Lionel Duvillaret 2 , Gwenael Gaborit 2,3 , and Olivier Beuf 1
1
University of Lyon 1, CREATIS - CNRS UMR
5220 INSERM U1044, Villeurbanne, Rhone-Alpes, France,
2
Kapteos,
Rhone-Alpes, France,
3
University
of Savoie, IMEP-LAHC UMR 5130, Rhone-Alpes, France
The use of metallic coaxial cables in Magnetic Resonance
Imaging could induce local high Specific Absorption Rate
(SAR). Optical fiber link could be a promising
alternative to coaxial cables for MRI to ensure patient
safety. Here, the conversion of the Radio-Frequency
magnetic field into an electric signal by electro-optic
effect was demonstrated and characterized. A waveguide
crystal is used together with an endoluminal coil to
demonstrate the ability of such transducer to perform a
deported characterization of Radio-Frequency magnetic
field at 3T. The results show a good agreement with
theoretical values and a minimum magnetic detectable
field of pT order.
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