Diffusion Weighted Imaging at 7 T with STEAM-EPI and GRAPPA

  title={Diffusion Weighted Imaging at 7 T with STEAM-EPI and GRAPPA},
  author={Bibek Dhital and Robert Turner},
Introduction: Diffusion Imaging at 7 Tesla has been quite a challenge. Standard diffusion sequences require long time to play diffusion gradients, especially for high b-values. This compromises higher intrinsic SNR [1]at 7T with shorter T2 relaxation. At 7T twice refocused spin echo [2] used for standard diffusion weighted imaging also suffers from high SAR. Magnetic field inhomogeneities that come together with higher field also contribute towards distortions in for echo-planar imaging [3]. We… CONTINUE READING