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Abstract #0760

Magnetic resonance imaging with direct optical detection

Anders Simonsen1, Juan D. Sánchez-Heredia2, Sampo Saarinen1, Jan H. Ardenkjær-Larsen2, Albert Schliesser1, and Eugene S. Polzik1
1Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark, 2Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, Denmark

A new approach to MRI detection is reported, where an optomechanical transducer directly converts and amplifies the MR signal to amplitude modulation of laser light. The transducer, which is simultaneously a capacitor and an optical cavity, is connected directly in parallel to the receive coil. The mechanical Q-factor of the transducer is 1500, providing a 3 dB bandwidth of 1 kHz. We show here for the first time that this technology can be used to directly acquire a 13C MRI at 3T (32.13 MHz), and reconstruct it using the standard pipeline of a commercial MR scanner.

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