The microarchitecture in gray matter of the human brain is comprised of short (<3 mm) cortical columns that traverse six cortical layers. To most accurately delineate these columns in-vivo, it is essential to achieve isotropic spatial resolutions on the order of 0.8 mm or less. In this study, we present a means of acquiring diffusion tensor imaging data with ultrahigh spatial resolution to effectively characterize the complex architecture of gray matter.
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