Exploiting Structural Redundancy in q-space for Improved EAP Reconstruction from Highly Undersampled (k, q)-space in dMRI

Diffusion-weighted MRI (dMRI) is an imaging technique that allows for the inference of axonal fiber connectivity in biological tissues non-invasively by sensitizing the MR signal to water diffusion. The water diffusion process is fully characterized by the ensemble average propagator (EAP), defined in the displacement r-space at each location x. It is related to the dMR measurements in (k, q)-space through the 6D Fourier transform under the narrow pulse assumption  (Callaghan, 1991):.

Source: Medical Image Analysis - March 12, 2019 Category: Radiology Authors: Jiaqi Sun, Alireza Entezari, Baba C. Vemuri Source Type: research