• Citations Per Year
Learn More
PURPOSE To demonstrate the phase evolutions of direct visualization of short transverse relaxation time component (ViSTa) matches with those of myelin water. METHOD Myelin water imaging (MWI) measures short transverse signals and has been suggested as a biomarker for myelin. Recently, a new approach, ViSTa, has been proposed to acquire short T2* signals(More)
PURPOSE To propose and evaluate a novel multidimensional approach for imaging subvoxel tissue compartments called Diffusion-Relaxation Correlation Spectroscopic Imaging. THEORY AND METHODS Multiexponential modeling of MR diffusion or relaxation data is commonly used to infer the many different microscopic tissue compartments that contribute signal to(More)
This work proposes a family of greedy algorithms to jointly reconstruct a set of vectors that are (i) nonnegative and (ii) simultaneously sparse with a shared support set. The proposed algorithms generalize previous approaches that were designed to impose these constraints individually. Similar to previous greedy algorithms for sparse recovery, the proposed(More)
Fig. 2. Decomposed component images from rat cervical spinal cord data. (top) Control animal. (bottom) Injured animal. Automatic Tissue Decomposition using Nonnegative Matrix Factorization for Noisy MR Magnitude Images Daeun Kim, Joong Hee Kim, and Justin P. Haldar Department of Electrical Engineering, University of Southern California, Los Angeles, CA,(More)
  • 1