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Abstract #0643

A lightweight silent gradient axis design with integrated 32 channel receive array for fast and quiet brain imaging at 3 Tesla

Edwin Versteeg1, Mark van Uden2, Luke van der Hofstad2, Kevin Bax2, Martino Borgo2,3, Wout Schuth3, Jeroen Siero1,4, Mark Gosselink1, and Dennis Klomp1
1Radiology, University Medical Center Utrecht, Utrecht, Netherlands, 2Tesla Dynamic Coils, Zaltbommel, Netherlands, 3Futura Composites, Heerhugowaard, Netherlands, 4Spinoza Centre for Neuroimaging, Amsterdam, Netherlands


The sound level in MRI can be lowered by using a silent gradient axis that adds extra soundless encoding. In this work, we present the field characteristics and first images for a silent gradient designed for a clinical 3 Tesla system. This silent gradient featured a built-in 32-channel receive coil and weighs 21 kg. The gradient field could be oscillated at 23.5 kHz and featured a linear region of 20 cm. The coil had limited interactions with the transmit B1 field and did not affect B1 homogeneity, which was showcased in phantom and in-vivo images.

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