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Abstract #3434

Accelerating silent MRI using a gradient axis at 20 kHz and generalized conjugate gradient SENSE reconstruction 

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 driven at 20 kHz can be used to decrease acoustic noise and increase patient comfort in MR-exams. However, the speed of this silent acquisition is determined by the amount of data needed for artifact free reconstructions. In this work, we present a framework for increasing the time efficiency while maintaining image quality of silent imaging with a silent gradient axis. We show that, by using a generalized conjugate gradient SENSE reconstruction, a 2-3-fold decrease in scan time is feasible both on a phantom and in-vivo.

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