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Abstract #1464

A short gradient coil with “outer-wall direct cooling" for human brain imaging

Hanbing Lu1, Zhi Yang2, Beihan Zhao2, Yong Pei2, and Bao Yang2

1Neuroimaging Research Branch, National Institute on Drug ABuse, NIH, Baltimore, MD, United States, 2Mechanical Engineering, University of Maryland, College Park, MD, United States

Optimal gradient performance is arguably a pre-requisite to realize the full potential of ultrahigh field MRI. The values of using tailored gradient coils for brain imaging have been well acknowledged. Unfortunately, conventional head-only gradient coils have two major technical limitations, i.e. limited shoulder clearance and limited cooling capacity. A new design, coined “auto-rim” gradient coil, combined with a novel cooling method, named “outer-wall direct cooling”, is proposed to fundamentally solve these two technical problems. As a proof-of-concept, we have built a protype gradient coil capable of generating 20.2, 13.5 and 29.1 Gauss/cm/600 ampere current along X, Y and Z, respectively.

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