Abstract #5036

Evaluation of High Resolution Diffusion MRI on the Next-Generation 7T scanner

An T Vu^1,2, Alexander JS Beckett^3,4, Salvatore T Torrisi^3,4, Sinyeob Ahn⁵, Michael Koehler⁶, Peter Dietz⁶, and David A Feinberg^3,4

¹Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, United States, ²Radiology, San Francisco Veteran Affairs Health Care System, San Francisco, CA, United States, ³Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, United States, ⁴Advanced MRI Technologies, Sebastopol, CA, United States, ⁵Siemens Medical Solutions USA, Inc., Melvern, PA, United States, ⁶Siemens Healthcare, Erlangen, Germany

Synopsis

The newly developed head gradient (200 mT/m Gmax, 900 T/m/s SR) on the new NexGen 7T system provides many potential benefits for high-resolution diffusion imaging. Faster, stronger gradients can significantly reduce diffusion encoding times and TE for up to a 3-fold improvement SNR while also reducing TR and total scan time. We demonstrate these benefits in high resolution diffusion imaging applications with b-values of up to 10,000 s/mm² at 7T.

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