Isotropic, high-resolution FMRI at 7T using 3D stack-of-segmented EPI
Wiggins C, Wiggins G, Miller K
Massachusetts General Hospital
High-resolution FMRI can reveal a wealth of information about cortical structure. However, conventional 2D approaches have severely limited resolution in the through-plane direction. This work presents a 3D stack-of-segmented EPI sequence for high-resolution FMRI, which is capable of achieving small, isotropic voxels with reasonable volume acquisition times. In combination with an 8-channel receive coil at 7T, we demonstrate robust activation maps with resolution as high as 0.58x0.58x0.58 mm3 (0.19 mm3).