Abstract #2876

A novel PNS measurement setup for body gradient coils at an ultrasonic driving frequency of 20kHz

Michael JB McGrory¹, Edwin Versteeg¹, Jeroen CW Siero^1,2, and Dennis WJ Klomp¹

¹Radiology, University Medical Center Utrecht, Utrecht, Netherlands, ²Spinoza Center for Neuroimaging, Amsterdam, Netherlands

Synopsis

Keywords: Gradients, Gradients

Large dB/dt swings in gradient coils can induce peripheral nerve stimulation (PNS) in the human body. This limits the slew rates used in whole-body MRI reducing scan speeds and spatial resolution. Ultrasonic head gradients can enable fast and silent imaging, however extension to whole-body gradients is challenging due to the required larger dB/dt swings. In this work, we present a body gradient coil which can be used to investigate PNS induction at an ultrasonic driving frequency of 20kHz.

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