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Integrated RF-shim coil allowing two degrees of freedom shim current

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Zhou, J., Chu, Y.-H., Hsu, Y.-C., Stockmann, J., & Lin, F.-H. (2016). Integrated RF-shim coil allowing two degrees of freedom shim current. In 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC 2016) (pp. 6246-6249). Piscataway, NJ, USA: IEEE.


Cite as: http://hdl.handle.net/21.11116/0000-0001-3DB8-C
Abstract
High-quality magnetic resonance imaging and spectroscopic measurements require a highly homogeneous magnetic field. Different from global shimming, localized off-resonance can be corrected by using multi-coil shimming. Previously, integrated RF and shimming coils have been used to implement multi-coil shimming. Such coils share the same conductor for RF signal reception and shim field generation. Here we propose a new design of the integrated RF-shim coil at 3-tesla, where two independent shim current paths are allowed in each coil. This coil permits a higher degree of freedom in shim current distribution design. We use both phantom experiments and simulations to demonstrate the feasibility of this new design.