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Abstract #0617

Dual axis gradient insert for supersonic MRI

Edwin Versteeg1, Tijl Van der Velden1, Jeroen Hendrikse1, Dennis Klomp1, and Jeroen Siero1,2
1Radiology, University Medical Center Utrecht, Utrecht, Netherlands, 2Spinoza Centre for Neuroimaging Amsterdam, Amsterdam, Netherlands

A silent gradient axis can be achieved by driving a gradient insert above 20 kHz. In this work, we investigate a prototype silent gradient insert that features two axes. Such a setup would enable both silent and fast imaging. The two axes were driven with an audio amplifier at 20 kHz and 22 kHz, and produced gradient amplitudes of 20.8 and 22 mT/m. We simulated the acceleration potential to be a factor of 9 and showed the feasibility of imaging with this setup on a phantom.

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