Systems and methods are provided for performing sheet tractography using diffusion tensor magnetic resonance imaging ('MRI'), Diffusion tensor data acquired from a subject using an MR] system is provided. Eigenvectors and eigenvalues are determined for locations within a subject from the data. Fiber sheets are produced based on these eigenvectors and eigenvalues. For instance, at each location, a fiber sheet is defined to extend along a direction of a first eigenvector, and to have a width that extends along a direction defined by a second eigenvector and a thickness that extends along a direction defined by a third eigenvector. The width and thickness of a fiber sheet can be scaled based on the eigenvalues associated with the second and third eigenvectors, respectively. Metrics, such as a torsion angle that defines the twisting of a fiber sheet, can be determined and mapped based on the fiber sheets.
SHEET TRACTOGRAPHY USING DIFFUSION TENSOR MRI