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Journal Article

Optically detunable, inductively coupled coil for self-gating in small animal magnetic resonance imaging

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Schulz,  Jessica
Department of Medical Physics in Radiology, Deutsches Krebsforschungszentrum, Heidelberg, Germany;
Department Neurophysics, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Citation

Korn, M., Umathum, R., Schulz, J., Semmler, W., & Bock, M. (2011). Optically detunable, inductively coupled coil for self-gating in small animal magnetic resonance imaging. Magnetic Resonance in Medicine, 65(3), 882-888. doi:10.1002/mrm.22665.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0012-1409-0
Abstract
An inductively coupled coil concept is presented, which improves the compensation of physiological motion by the self-gating (SG) technique. The animal is positioned in a conventional volume coil encompassing the whole animal. A small, resonant surface coil (SG-coil) is placed on the thorax so that its sensitive region includes the heart. Via inductive coupling the SG-coil amplifies selectively the MR signal of the beating heart. With an optical detuning mechanism, this coupling can be switched off during acquisition of the MR image information, whereas it is active during SG data sampling to provide the physiological information. In vivo experiments on a mouse show an amplification of the SG signal by at least 40%. Copyright © 2011 Wiley-Liss, Inc.