Abstract #0862
ENDOLUMINAL MR RECEIVER COIL BASED ON ELECTRO-OPTICAL CONVERSION AND ACTIVE OPTICAL DECOUPLING
Isabelle Saniour 1 , Anne-Laure Perrier 2 , Reina Ayd 1 , Gwenal Gaborit 2,3 , Lionel Duvillaret 3 , and Olivier Beuf 1
1
Universit de Lyon, CREATIS, CNRS UMR 5220,
Inserm U1044, INSA-Lyon, Universit Lyon 1,
Villeurbanne, France,
2
Universit
de Savoie, IMEP-LAHC, UMR 5130, Le Bourget-du-Lac,
France,
3
KAPTEOS,
Sainte-Hlne-du-Lac, France
The use of metallic coaxial cables in MRI 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. A novel type of an
endoluminal receiver coil ensuring optical transmission
of NMR signal and optical detuning is designed. Firstly,
the conversion of the NMR electrical signal into an
optical signal is based on Pockels effect and ensured by
an Electro-Optical (EO) waveguide added to the coil
according to the applied electric field. Then, the
decoupling of the coil is done optically using
photodiodes placed on the coil that provide the DC
decoupling current.
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