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Abstract #1019

Development of a Dedicated Asymmetric Head-only Gradient Coil for High-Performance Brain Imaging with a High PNS Threshold

Jean-Baptiste Mathieu 1 , Seung-Kyun Lee 1 , Dominic Graziani 1 , Jian Lin 2 , Eric Budesheim 1 , Joseph E. Piel 1 , Naveen Thiagarajan 1 , Christopher J. Hardy 1 , John F. Schenck 1 , Ek Tsoon Tan 1 , Eric Fiveland 1 , Keith Park 1 , Yihe Hua 2 , Matt A. Bernstein 3 , John Huston III 3 , Yunhong Shu 3 , and Thomas K.-F. Foo 1

1 GE Global Research, Niskayuna, NY, United States, 2 GE Global Research, China Technology Center, Shanghai, China, 3 Mayo Clinic, Rochester, MN, United States

A high-performance, highly-accessible head-only gradient coil with an asymmetrically located, 26 cm field of view was built and tested. The coil was force- and torque-balanced, and can dissipate 25 kW of power on all axes with a standard 3T scanner systems cabinet. The coil was tested inside a conventional, 70-cm bore, whole-body 3T magnet for image quality and patient comfort assessment. Initial results showed high-quality brain images with all three gradients at 80 mT/m and 500 T/m/s without significant peripheral nerve stimulation.

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