Results 61 to 70 of about 6,599 (190)

Diffusion MRI of the Body: Beyond PGSE‐EPI

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Diffusion magnetic resonance imaging (dMRI) is a widely used clinical imaging technique which is sensitive to changes in tissue microstructure including cellularity, perfusion, and tissue damage. DMRI has been used in whole‐body imaging as well as in targeted imaging of every major anatomical region.
Matthew T. Cherukara, Wenbo Sun, David Leitão, Shaihan Malik, Radhouene Neji, Joseph V. Hajnal, Andrada Ianus   +6 more
wiley   +1 more source

Postnatal Guinea Pig Brain Development, as Revealed by Magnetic Resonance and Diffusion Kurtosis Imaging

Brain Sciences, 2020
This study used in vivo magnetic resonance imaging (MRI) to identify age dependent brain structural characteristics in Dunkin Hartley guinea pigs. Anatomical T2-weighted images, diffusion kurtosis (DKI) imaging, and T2 relaxometry measures were acquired ...
Roger J. Mullins, Su Xu, Jiachen Zhuo, Steve Roys, Edna F.R. Pereira, Edson X. Albuquerque, Rao P. Gullapalli   +6 more
doaj   +1 more source

A two‐stage model for precise identification and Gleason grading of clinically significant prostate cancer: a hybrid approach

Journal of Medical Radiation Sciences, Volume 72, Issue 1, Page 93-105, March 2025.
This study developed a two‐stage model using radiomics‐based multiparametric MRI and clinical indicators to help identify and grade clinically significant prostate cancer. The model showed promising levels of diagnostic accuracy and predictive performance.
Yuyan Zou, Xuechun Wang, Fen Ma, Xulun Liu, Chunyue Jiao, Zhen Kang, Jingjing Cui, Yang Zhang, Yan Xie, Lei Chen, Ronghua Tian   +10 more
wiley   +1 more source

Diffusion kurtosis imaging allows the early detection and longitudinal follow-up of amyloid-β-induced pathology

Alzheimer’s Research & Therapy, 2018
Background Alzheimer’s disease (AD) is a progressive neurodegenerative disorder and the most common cause of dementia in the elderly population. In this study, we used the APP/PS1 transgenic mouse model to explore the feasibility of using diffusion ...
Jelle Praet, Nikolay V. Manyakov, Leacky Muchene, Zhenhua Mai, Vasilis Terzopoulos, Steve de Backer, An Torremans, Pieter-Jan Guns, Tom Van De Casteele, Astrid Bottelbergs, Bianca Van Broeck, Jan Sijbers, Dirk Smeets, Ziv Shkedy, Luc Bijnens, Darrel J. Pemberton, Mark E. Schmidt, Annemie Van der Linden, Marleen Verhoye   +18 more
doaj   +1 more source

Beyond Directions: Symmetry‐Aware Rotation Sets for Triaxial Diffusion Encoding by Geometric Filter Optimization

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To improve the accuracy of diffusion‐weighted powder average signals for diffusion encoding with arbitrary b‐tensors. Methods We identify an intrinsic dihedral (D2$$ {D}_2 $$) symmetry of diffusion signals for arbitrary diffusion encoding, which defines their natural signal space (a quotient of 3D rotations).
Sune Nørhøj Jespersen, Filip Szczepankiewicz   +1 more
wiley   +1 more source

Dependence of the Extra‐Cellular Diffusion Coefficient on the Fractions of Neurites and Cell Bodies in Gray Matter

Magnetic Resonance in Medicine, EarlyView.
Purpose The dependence of the long‐time (tortuosity) limit of the extra‐cellular diffusivity on the intra‐cellular volume fraction is of fundamental importance for microstructure modeling. While such dependencies have been explored for the white matter, the tortuosity limit in gray matter is unknown due to complex cell composition and geometry. Here we
Hong‐Hsi Lee, Ali Abdollahzadeh, Hansol Lee, Ricardo Coronado‐Leija, Els Fieremans, Susie Y. Huang, Dmitry S. Novikov   +6 more
wiley   +1 more source

A Deep Nonlinear Subspace Modeling and Reconstruction for Diffusion‐Weighted Imaging Using Denoising Auto‐Encoder

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To present a novel, nonlinear subspace modeling and joint k–q‐space reconstruction technique for high‐resolution, multi‐band, multi‐shell diffusion‐weighted imaging (DWI). Methods High b‐value (> 1000 s/mm2), high resolution DWI has the drawback of generally low signal‐to‐noise ratios (SNRs).
Julius Glaser, Zhengguo Tan, Annika Hofmann, Frederik Bernd Laun, Florian Knoll   +4 more
wiley   +1 more source

Erweiterte Anwendung der Diffusions-Kurtosis-Bildgebung

, 2021
Die Diffusions-Tensor-Bildgebung (DTI) zur Rekonstruktion und Visualisierung von Fasertrakten im Gehirn zählt mittlerweile zu den Standardverfahren in der klinischen Routine und der neurowissenschaftlichen Forschung. Aufgrund der vereinfachenden Annahme des zugrundliegenden Tensormodells - einer Gaußschen Verteilung der Diffusion - ist eine räumlich ...
openaire   +2 more sources

Correlating Pulmonary Hemodynamics With HP 129Xe Dissolved‐Phase MRSI in a Controlled Porcine Intervention Study

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Pulmonary hypertension is related to a 1‐year mortality ranging from < 5% to > 20% in low‐ and high‐risk groups. Right heart catheterization is the diagnostic gold standard, associated with a 1.1% rate of severe adverse events, posing the need for a non‐invasive diagnostic tool.
Markus Phillip Andersen, Mattias Hedegaard Kristensen, Esben Søvsø Szocska Hansen, Rolf F. Schulte, Mohsen Redda, Uffe Kjærgaard, Michael Vaeggemose, Christoffer Laustsen   +7 more
wiley   +1 more source

A Voxel‐Wise T2 Distribution Framework for Lesion Severity Stratification and Treatment‐Response Assessment in Stroke: Insights Into Suberoylanilide Hydroxamic Acid‐Induced Neuroprotection

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To evaluate lesion severity distribution in ischaemic brain lesions in spontaneously hypertensive rats (SHR) subjected to 90‐min transient middle cerebral artery occlusion (tMCAO), and to determine whether epigenetically based neuroprotection modifies lesion severity profiles using a voxel‐wise T2 distribution framework.
Andrea Díaz‐Pérez, Clara Penas, Francesc Jiménez‐Altayó, Silvia Lope‐Piedrafita   +3 more
wiley   +1 more source