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Abstract #0180

Combination of integrated dynamic shimming and readout-segmented echo planar imaging for diffusion-weighted MRI of the head and neck region at 3 Tesla.

Sven Stephan Walter1, Alto Stemmer2, Berthold Kiefer2, Konstantin Nikolaou1, Petros Martirosian3, Mike Notohamiprodjo1, and Sergios Gatidis1

1Department of Radiology, University Hospital Tuebingen, Tuebingen, Germany, 2Siemens Healthineers, Erlangen, Germany, 3Department of Experimental Radiology, University Hospital Tuebingen, Tuebingen, Germany

The purpose of this study was to evaluate possible improvements in EPI-based DWI of the head/neck at 3 Tesla using a combination of readout-segmented EPI and dynamic shimming. We assessed ADC quantification in an anthropomorphic phantom and evaluated the presence of geometric distortions, signal losses, ghosting artifacts, and overall image quality in both, phantom and in-vivo data from 10 volunteers. We found that combining integrated shimming with readout-segmented EPI significantly improves images quality of EPI based DWI of the head/neck at 3 Tesla compared to the single techniques alone or conventional single-shot EPI.

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