Results 61 to 70 of about 8,572,069 (168)

Clinical Soma and Neurite Density Imaging (SANDI): Translational Microstructure Mapping on Clinical 3T MRI Scanners

Magnetic Resonance in Medicine, Volume 96, Issue 6, Page 2780-2794, December 2026.
ABSTRACT Purpose The Soma and Neurite Density Imaging (SANDI) model enables characterization of gray matter (GM) microstructure by estimating soma and neurite signal fractions, but its clinical applicability is limited by the need for multi‐shell acquisitions (at least five b‐values up to 6000 s/mm2), requiring high‐gradient MRI systems. We developed a
Hansol Lee, Kwok‐Shing Chan, Yixin Ma, Dongsuk Sung, Sohyun Han, DongKyu Lee, Eva A. Krijnen, Laleh Eskandarian, Aneri Bhatt, Julianna Gerold, HyungJoon Cho, Susie Y. Huang, Hong‐Hsi Lee   +12 more
wiley   +1 more source

Regularized Joint Reconstruction and Slab Combination for Accelerated Three‐Dimensional Multi‐Slab Diffusion‐Weighted Imaging Using Multi‐Scale Energy Models

Magnetic Resonance in Medicine, Volume 96, Issue 5, Page 2321-2335, November 2026.
ABSTRACT Purpose To jointly reconstruct high‐resolution diffusion‐weighted volumes and eliminate slab‐boundary artifacts while preserving fine anatomical detail from undersampled 3D multi‐slab k‐space acquisitions. Methods A bilinear forward model was formulated to describe the 3D multi‐slab acquisition, treating the image volume and slab excitation ...
Reza Ghorbani, Jyothi Rikhab Chand, Chu‐Yu Lee, Mathews Jacob, Merry Mani   +4 more
wiley   +1 more source

High-angular resolution diffusion tensor imaging: physical foundation and geometric framework

Frontiers in Physics
This paper proposes a statistical physics-based data assimilation model for the mobility of water-bound hydrogen nuclear spins in the brain in the context of diffusion weighted magnetic resonance imaging (DWI or DW-MRI).
Luc Florack, Rick Sengers
doaj   +1 more source

DTI-based upper limit of voxel free water fraction

, 2018
BackgroundFree water (FW) in neuroimaging is non-flowing extracellular water in the cranium and brain tissue, and includes both cerebral spinal fluid (CSF) and fluid in intercellular space or edema. For a region such as a voxel (spatial unit of measurement in neuroimaging), the FW fraction is defined as the volume fraction of FW within that volume ...
Macey, Paul M, Thomas, M Albert, Henderson, Luke A   +2 more
openaire   +1 more source

High‐Resolution IVIM MRI Characterizes Diffusion–Perfusion Properties of the Parasagittal Dura

NMR in Biomedicine, Volume 39, Issue 11, November 2026.
Parasagittal dura demonstrates intermediate diffusion and elevated perfusion‐related IVIM metrics compared with brain parenchyma, reflecting its unique microfluidic environment at the CSF–dura interface. IVIM imaging of the parasagittal dura provides a rapid, noncontrast MRI approach to assess dural fluid transport and may offer a potential imaging ...
Yi‐Jui Liu, Chun‐Han Liao, Shin‐Lei Peng, Shao‐Chieh Lin, Chao‐Chun Lin, Chia‐Wei Lin, Chia‐Hong Hsieh, Chun‐Wen Chen, Hing‐Chiu Chang   +8 more
wiley   +1 more source

Image_2_Fixel-Based Analysis and Free Water Corrected DTI Evaluation of HIV-Associated Neurocognitive Disorders.tiff

, 2021
Background: White matter (WM) damage is a consistent finding in HIV-infected (HIV+) individuals. Previous studies have evaluated WM fiber tract-specific brain regions in HIV-associated neurocognitive disorders (HAND) using diffusion tensor imaging (DTI).
Xing Qiu (560143), Jianhui Zhong (289577), Miriam T. Weber (11646436), Md Nasir Uddin (11646439), Giovanni Schifitto (396208), Alan Finkelstein (1956799), Abrar Faiyaz (11646433)   +6 more
core   +1 more source

A Novel MR Elastography Device for Preclinical Applications From Spheroids to Rodents: Design, Validation, and Performance Evaluation

NMR in Biomedicine, Volume 39, Issue 11, November 2026.
MR elastography (MRE) noninvasively assesses tissue biomechanics, but preclinical research suffers from diverse hardware solutions, hindering reproducibility and comparability. This study introduces a versatile preclinical MRE device for imaging rodents, ex vivo samples, and spheroids/organoids.
Gabrielle Mangin, Hannah Fels‐Palesandro, Valéria Bisio, Nicolas Dulphy, Karl Balabanian, Inas H. Faris, Andrea Federici, Asma Boumaza, Marguerite Ducamp, Roland Zerelles, Valérie Vilgrain, Valérie Paradis, Giacomo Annio, Katharina Schregel, Ralph Sinkus   +14 more
wiley   +1 more source

Decreased diffusivity along the perivascular spaces in bipolar disorder: an MRI-based cross-sectional and Mendelian randomization study

Translational Psychiatry
The pathophysiology of bipolar disorder (BD) remains unclear. We investigated whether diffusion tensor imaging along perivascular spaces (DTI-ALPS), a putative MRI marker of glymphatic function, is altered in BD and whether this index relates to ...
Zhuohui Chen, Ziwei Teng, Yan Qiu, Sujuan Li, Xuelei Xu, Min Yang, Jindong Chen, Dong Yang, Hao Li   +8 more
doaj   +1 more source

Predicting glioblastoma recurrence from preoperative MR scans using fractional-anisotropy maps with free-water suppression.

, 2020
Diffusion tensor imaging (DTI), and fractional-anisotropy (FA) maps in particular, have shown promise in predicting areas of tumor recurrence in glioblastoma.
Marie-Christin Metz, Zimmer, C., Wiestler, B., Gempt, J., Eichinger, P., Jens Gempt, Lioba Grundl, Jana Lipkova, Bjoern Menze, Liesche-Starnecker, F., Metz, M.C., Menze, B., Miguel Molina-Romero, Benedikt Wiestler, Molina-Romero, M., Friederike Liesche-Starnecker, Paul Eichinger, Lipkova, J., Claus Zimmer, Grundl, L., Combs, S.E., Stephanie E. Combs   +21 more
core   +1 more source

Image_3_Fixel-Based Analysis and Free Water Corrected DTI Evaluation of HIV-Associated Neurocognitive Disorders.tiff

, 2021
Background: White matter (WM) damage is a consistent finding in HIV-infected (HIV+) individuals. Previous studies have evaluated WM fiber tract-specific brain regions in HIV-associated neurocognitive disorders (HAND) using diffusion tensor imaging (DTI).
Xing Qiu (560143), Jianhui Zhong (289577), Miriam T. Weber (11646436), Md Nasir Uddin (11646439), Giovanni Schifitto (396208), Alan Finkelstein (1956799), Abrar Faiyaz (11646433)   +6 more
core   +1 more source