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Abstract #4440

Acoustic noise optimized Diffusion-Weighted Imaging (DWI)

Martin Ott 1 , David Porter 2 , Felix Breuer 1 , David Grodzki 2 , Martin Blaimer 1 , Bjrn Heismann 2 , and Peter Jakob 1,3

1 MRB Forschungszentrum fr Magnet-Resonanz-Bayern e.V., Wrzburg, Bavaria, Germany, 2 Siemens AG, Erlangen, Bavaria, Germany, 3 Department of Experimental Physics 5, University of Wuerzburg, Wrzburg, Germany

Diffusion-Weighted Imaging (DWI) is one of the loudest and most challenging sequence in terms of acoustic-noise due to the requirement of strong and fast switching gradients. In this work, among other gradient optimizations, a rs-EPI readout is modified to consequently minimize slew rates and hence acoustic-noise. Methodical modifications are presented as well as corresponding acoustic-noise measurements. A significant reduction in acoustic-noise of over 15dB(A) could be achieved. In-vivo imaging results are compared to standard methods like single-shot EPI.

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