Joint Spatial-Angular Sparse Coding for dMRI with Separable Dictionaries

Diffusion magnetic resonance imaging (dMRI) is a medical imaging modality used to analyze neuroanatomical biomarkers for brain diseases such as Alzheimer ’s. dMRI are 6D signals consisting of a set of 3D spatial MRI volumes acquired in k-space that are each weighted with a different diffusion signal measured in q-space. In each voxel of a brain dMRI, the q-space diffusion signals are reconstructed to estimate orientations and integrity of neuronal fiber tracts, in vivo. Different dMRI protocols measure q-space in different ways.
Source: Medical Image Analysis - Category: Radiology Authors: Source Type: research