Active optical-based decoupling circuit for receiver endoluminal coil

R. Aydé (1) , R. Sablong (1) , G. Gaborit (2, 3) , L. Duvillaret (3) , A.-L. Perrier (1) , O. Beuf (1)

1 RMN et optique : De la mesure au biomarqueur
2 IMEP-LAHC - Institut de Microélectronique, Electromagnétisme et Photonique - Laboratoire d'Hyperfréquences et Caractérisation
3 Kapteos SAS

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.

Domaines: Imagerie

R. Aydé, R. Sablong, G. Gaborit, L. Duvillaret, A.-L. Perrier, et al.. Active optical-based decoupling circuit for receiver endoluminal coil. Joint Annual Meeting ISMRM-ESMRMB 2014, May 2014, Milan, Italy. 13, pp.1274 - 1280, 2013. ⟨hal-01032138⟩