MR signal conditioning for an electro-optic conversion with a polarization state modulator
paul nobre1, Gwenaël Gaborit2,3, Raphael Sablong1, Nadege Courjal4, Florent Behague4, Antoine Coste4, Adrien Godet4, Miguel Suarez4, Lionel Duvillaret3, and Olivier Beuf1
1Univ. Lyon, INSA-Lyon, Université Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS, UMR 5220, U1206, Villeurbanne, France, 2Université de Savoie, IMEP-LAHC, UMR 5130, Le Bourget-du-Lac, France, 3KAPTEOS, Sainte-Hélène-du-Lac, France, 4Institut FEMTO-ST, UMR CNRS 6174, Université Bourgogne Franche-Comté, Besançon, France
The coaxial cables connecting coils to the MRI are subject to many unwanted interactions with RF pulses and with patients’ tissues. Currents flowing on the shielding of the cable can lead to local SAR increase and RF-induced burns. Despite their limitations and the amount of effort to discard them, there is still no satisfying alternative. One of the issue for competing technologies is to safely provide on coil power supply without cables inside the MRI. In this work, we propose to evaluate the feasibility of passive optical conversion and transmission of the signal to the MRI console.
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