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An RF-Over-Fiber System for Reliable Signal Injection in ERETIC Spectroscopy

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Citation

Pavan, M., Heinzer-Schweizer, S., De Zanche, N., Henning, A., Boesiger, p., & Pruessmann, K. (2009). An RF-Over-Fiber System for Reliable Signal Injection in ERETIC Spectroscopy. Poster presented at 17th Annual Meeting of the International Society for Magnetic Resonance in Medicine (ISMRM 2009), Honolulu, HI, USA.


Cite as: https://hdl.handle.net/21.11116/0000-0003-1564-5
Abstract
We present an optical link used to transmit a reference signal in spectroscopy (ERETIC method). The optical link has the peculiarity to be safety and inexpensive since it is made of only a low noise preamplifier, a high speed LED, polymer optical fiber and a photodiode. The reference signal is generated outside the MR room, it travels along the optical fiber, enters the scanner room’s Faraday shield through a waveguide and is injected into a birdcage coil by inductive coupling. The link is shown to be reliable and stable over time consenting so, good fidelity quantitative measurements of metabolite concentrations.