Abstract #1343
Active optical-based decoupling circuit for receiver endoluminal coil
Reina Ayde 1 , Raphael Sablong 1 , Gwenael Gaborit 2,3 , Lionel Duvillaret 3 , Anne-Laure Perrier 1 , and Olivier Beuf 1
1
CREATIS - CNRS UMR 5220 INSERM U1044,
University of Lyon 1, Villeurbanne, Rhone-Alpes, France,
2
IMEP-LAHC
UMR 5130, University of Savoie, Rhone-Alpes, France,
3
Kapteos,
Rhone-Alpes, France
The use of metallic coaxial cables in MRI could induce
local high Specific Absorption Rate. Optical fiber link
could be an alternative to coaxial cables to ensure
patient safety. In order to assure a complete optical
endoluminal receiver coil, an optical system for
decoupling the receiver coil was made. The MRI for a
phantom of ionized water was taken with three
endoluminal coils with different decoupling system:
classical, optical and without decoupling system. The
SNR and the uniformity of signal distribution were
studied and compared. The results show that the
decoupling system works perfectly and does not induce
field inhomogeneity.
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