A volume microstrip RF coil for MRI microscopy |
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Authors: | Jasiński Krzysztof M?ynarczyk Anna Latta Peter Volotovskyy Vyacheslav W?glarz W?adyslaw P Tomanek Bogus?aw |
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Institution: | a Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Kraków, Polandb Institute for Biodiagnostics, National Research Council of Canada, Winnipeg, Manitoba R3B 1Y6, Canada |
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Abstract: | Quantitative magnetic resonance imaging (MRI) studies of small samples such as a single cell or cell clusters require application of radiofrequency (RF) coils that provide homogenous B1 field distribution and high signal-to-noise ratio (SNR).We present a novel design of an MRI RF volume microcoil based on a microstrip structure. The coil consists of two parallel microstrip elements conducting RF currents in the opposite directions, thus creating homogenous RF field within the space between the microstrips. The construction of the microcoil is simple, efficient and cost-effective.Theoretical calculations and finite element method simulations were used to optimize the coil geometry to achieve optimal B1 and SNR distributions within the sample and predict parameters of the coil. The theoretical calculations were confirmed with MR images of a 1-mm-diameter capillary and a plant obtained with the double microstrip RF microcoil at 11.7 T. The in-plane resolution of MR images was 24 μm×24 μm. |
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Keywords: | MRI microcoil RF coil Micro MRI SNR FEM |
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