Improving SNR in high b-value diffusion imaging using Gmax=300 mT/m human gradients

M. Dylan Tisdall, Thomas Witzel, Veneta Tountcheva, Jennifer A. McNab, Julien Cohen-Adad, Ralph Kimmlingen, Philipp Hoecht, Eva Eberlein, Keith Heberlein, Franz Schmitt, Herbert Thein, Van J. Wedeen, Bruce R. Rosen, Lawrence L. Wald 

This article demonstrates that the results of the phantom experiment show close agreement between SNR improvement with and without diffusion-encoding gradient lobes, indicating that there is no loss of SNR due to side effects of the high amplitude gradient lobes. Download presentation slides.

Improved Q-Ball imaging using a 300 mT/m human gradient

Julien Cohen-Adad, M. Dylan Tisdall, Ralph Kimmlingen, Eva Eberlein, Thomas Witzel, Philipp Hoecht, Boris Keil, Juergen Nistler, Dietmar Lehne, Keith Heberlein, Jennifer A. McNab, Herbert Thein, Franz Schmitt, Bruce R. Rosen, Van J. Wedeen, and Lawrence L. Wald

This study presents the first in vivo human diffusion-weighted data acquired at Gmax=300 mT/m.

A 64 channel receive-only field camera for eddy current and trajectory calibration

V. Tountcheva, B. Keil, T. Witzel, D. Tisdall, P. Hoecht, L.L. Wald

In this work, the authors construct and validate a 64-channel field camera to study eddy currents induced by the high maximum amplitude gradients (Gmax= 300mT/m) of a diffusion dedicated scanner constructed for the Human Connectome Project.


In Vivo Human Brain Measurements of Axon Diameter Using 300 mT/m Maximum Gradient Strengths