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Abstract #4851

Design, Construction and Initial Evaluation of a Folded Insertable Head Gradient Coil

Trevor Paul Wade 1,2 , Andrew Alejski 1 , Janos Bartha 1 , Dina Tsarapkina 1 , R. Scott Hinks 3 , Graeme C. McKinnon 3 , Brian K. Rutt 4 , and Charles A. McKenzie 2

1 Robarts Research Institute, The University of Western Ontario, London, Ontario, Canada, 2 Medical Biophysics, The University of Western Ontario, London, Ontario, Canada, 3 GE Healthcare, Waukesha, WI, United States, 4 Radiology, Stanford University, Stanford, CA, United States

A symmetric, folded gradient, was designed for human brain imaging, with a target gradient strength of 80 mT/m and slew rate of 2900 mT/m/s. This design should limit forces and torques leading to a quieter coil with better eddy-current performance. The ultra-short design allows for human brain imaging without the need for shoulder cut-outs. The insertable coil was built using litz wire for transverse axes and hollow copper for Z to facilitate cooling. It was successfully interfaced with a clinical scanner and its electrical and imaging performance was characterised.

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