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Abstract #0842

Fast and quiet 3D MPRAGE using a silent gradient axis - sequence development

Edwin Versteeg1, Sarah M. Jacobs1, Ícaro A.F. Oliveira2, Dennis W.J. Klomp1, and Jeroen C.W. Siero1,2
1Radiology, University Medical Center Utrecht, Utrecht, Netherlands, 2Spinoza centre for neuroimaging Amsterdam, Amsterdam, Netherlands

Sound levels in MRI can be reduced by switching a silent gradient axis beyond the hearing threshold. In this work, we implemented a silent readout module that applies such a silent gradient axis (at 7T) to a 3D MPRAGE sequence. This resulted in a sequence that featured a much lower peak sound level (26 dB reduction), similar image contrast and imaging time compared to a conventional MPRAGE-scan. This shows that a silent gradient axis provides a pathway to fast and quiet brain imaging with the potential to translate to other field strengths.

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