Low field MRI with magnetoresistive mixed sensors

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Abstract

Low-field magnetic resonance imaging (MRI) requires very sensitive magnetometers for detection of weak magnetic signals in femtoTesla range. Magnetoresistive mixed sensors could be used as the sensitive magnetometers [1]. These sensors are the combination of a Giant Magnetoresistive (GMR) field sensor and a superconducting loop used as a flux-to-field transformer. A MRI set-up based on mixed sensor has been mounted. This system operates in static field up to 10mT without shielded room. We will present the LF-MRI setup with the implementation of mixed sensors and the first MRI images obtained at low field without prepolarization.

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Sergeeva-Chollet, N., Dyvorne, H., Dabek, J., Herreros, Q., Polovy, H., Goff, G. L., … Fermon, C. (2011). Low field MRI with magnetoresistive mixed sensors. In Journal of Physics: Conference Series (Vol. 303). Institute of Physics Publishing. https://doi.org/10.1088/1742-6596/303/1/012055

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