Dictionary-based Fiber Orientation Estimation with Improved Spatial Consistency

Diffusion magnetic resonance imaging (dMRI) captures the anisotropic water diffusion in tissue and enables in vivo reconstruction of white matter tracts  (Johansen-Berg and Behrens, 2013). Diffusion tensor imaging (DTI) (Basser et al., 1994) is a basic dMRI strategy that models the water diffusion using a Gaussian distribution, yet it fails to represent crossing fiber tracts. More advanced high angular resolution diffusion imaging (HARDI) (Tuch et al., 2002) and diffusion spectrum imaging (DSI) (Wedeen et al., 2005) have been proposed to resolve crossing fibers.

Source: Medical Image Analysis - November 23, 2017 Category: Radiology Authors: Chuyang Ye, Jerry L. Prince Source Type: research