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30 May 2016 Triaxial fiber optic magnetic field sensor for MRI applications
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Proceedings Volume 9916, Sixth European Workshop on Optical Fibre Sensors; 99160S (2016)
Event: Sixth European Workshop on Optical Fibre Sensors (EWOFS'2016), 2016, Limerick, Ireland
In this paper, we report a fiber-optic triaxial magnetic field sensor, based on Fiber Bragg Gratings (FBGs) integrated with giant magnetostrictive material, the Terfenol-D. The realized sensor has been designed and engineered for Magnetic Resonance Imaging (MRI) applications. A full magneto-optical characterization of the triaxial sensing probe has been carried out, providing the complex relationship among the FBGs wavelength shift and the applied magnetostatic field vector. Finally, the developed fiber optic sensors have been arranged in a sensor network composed of 20 triaxial sensors for mapping the magnetic field distribution in a MRI-room at a diagnostic center in Naples (SDN), equipped with Positron emission tomography/magnetic resonance (PET/MR) instrumentation. Experimental results reveal that the proposed sensor network can be efficiently used in MRI centers for performing quality assurance tests, paving the way for novel integrated tools to measure the magnetic dose accumulated day by day by MRI operators.
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Massimo L. Filograno, Marco Pisco, Angelo Catalano, Ernesto Forte, Marco Aiello, Andrea Soricelli, Daniele Davino, Ciro Visone, Antonello Cutolo, and Andrea Cusano "Triaxial fiber optic magnetic field sensor for MRI applications", Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 99160S (30 May 2016);


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