Director Field Analysis (DFA): Exploring Local White Matter Geometric Structure in Diffusion MRI

Diffusion MRI is a powerful non-invasive imaging technique widely used to explore white matter in the human brain. Diffusion Tensor Imaging (DTI)  (Basser et al., 1994) is used to reconstruct a tensor field from diffusion weighted images (DWIs). High Angular Resolution Diffusion Imaging (Tuch et al., 2002; Frank, 2002; Descoteaux et al., 2007; Tournier et al., 2007; Cheng et al., 2010; 2015; 2014; Özarslan et al., 2013), which makes no assumption of a 3D Gaussian distribution of the diffusion propagator, is used to reconstruct a general function field from DWIs, (e.g., an Orientation Distribution Function (ODF) or Ensemble Average Propagator (EAP) field).

Source: Medical Image Analysis - October 11, 2017 Category: Radiology Authors: Jian Cheng, Peter J. Basser Source Type: research