Quantitative susceptibility mapping (QSM) is a recent in vivo magnetic resonance imaging (MRI) technique that provides quantitative information about the bulk magnetic susceptibility distribution in tissues, a promising measure for studying brain iron. A voxel-based analysis (VBA) of susceptibility maps would facilitate a better understanding of the intricate anatomical structure (e.g. sub-nuclear regions) of deep gray matter and its relation to diseases and normal aging.
In the present work, we developed and quantitatively assessed six strategies for creating a susceptibility brain template for VBA based on ANTs, representing the first step toward an understanding of sub-nuclear susceptibility changes without the need for a priori information.
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