Microscopic anisotropy misestimation in spherical-mean single diffusion encoding MRI
نویسندگان
چکیده
منابع مشابه
Neurite density imaging versus imaging of microscopic anisotropy in diffusion MRI: A model comparison using spherical tensor encoding
In diffusion MRI (dMRI), microscopic diffusion anisotropy can be obscured by orientation dispersion. Separation of these properties is of high importance, since it could allow dMRI to non-invasively probe elongated structures such as neurites (axons and dendrites). However, conventional dMRI, based on single diffusion encoding (SDE), entangles microscopic anisotropy and orientation dispersion w...
متن کاملDouble Oscillating Diffusion Encoding (DODE) augments microscopic anisotropy contrast
Target audience. Researchers and clinicians interested in the brain’s microarchitecture and diffusion MR methods. Purpose. Generating a methodology capable of amplifying Double-Diffusion-Encoding MR’s sensitivity towards randomly oriented compartments. Introduction. Double Diffusion Encoding (DDE, Fig. 1A) [1] NMR and MRI techniques – more commonly known as Double Wave Vector (DWV) [2] or doubl...
متن کاملDouble oscillating diffusion encoding and sensitivity to microscopic anisotropy
PURPOSE To introduce a novel diffusion pulse sequence, namely double oscillating diffusion encoding (DODE), and to investigate whether it adds sensitivity to microscopic diffusion anisotropy (µA) compared to the well-established double diffusion encoding (DDE) methodology. METHODS We simulate measurements from DODE and DDE sequences for different types of microstructures exhibiting restricted...
متن کاملObservation of microscopic diffusion anisotropy in the spinal cord using double-pulsed gradient spin echo MRI.
A double-pulsed gradient spin echo (d-PGSE) filtered MRI sequence is proposed to detect microscopic diffusion anisotropy in heterogeneous specimen. The technique was developed, in particular, to characterize local microscopic anisotropy in specimens that are macroscopically isotropic, such as gray matter. In such samples, diffusion tensor MRI (DTI) produces an isotropic or nearly isotropic diff...
متن کاملReduced-Encoding Imaging of Diffusion Anisotropy
Z-P. Liang, A. H. Poonawalla, D. Hernando, L. Ying, X. J. Zhou Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States, Department of Imaging Physics, University of Texas MD Anderson Cancer Center, Houston, Texas, United States, Department of Electrical Engineering and Computer Science, University of WisconsinMilwaukee, Milw...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2019
ISSN: 0740-3194
DOI: 10.1002/mrm.27606