Results 81 to 90 of about 20,208 (255)

Uncovering the impact of the cardiovascular system on cerebrovascular health using MRI

Experimental Physiology, EarlyView.
Abstract Human cerebrovasculature is finely tuned to enable local changes in blood flow to meet the brain's demands, whilst protecting the brain from systemic changes in blood pressure, both acutely during a heartbeat and chronically over time. This review summarises cerebrovascular structure and function, their role in disease and neurodegeneration ...
Ian D. Driver, Kevin Murphy
wiley   +1 more source

Using quantitative magnetic resonance imaging to track cerebral alterations in multiple sclerosis brain: A longitudinal study

Brain and Behavior, 2023
Introduction Quantitative MRI quantifies tissue microstructural properties and supports the characterization of cerebral tissue damages. With an MPM protocol, 4 parameter maps are constructed: MTsat, PD, R1 and R2*, reflecting tissue physical properties ...
Nora Vandeleene, Camille Guillemin, Solène Dauby, Florence Requier, Maëlle Charonitis, Daphne Chylinski, Evelyne Balteau, Pierre Maquet, Emilie Lommers, Christophe Phillips   +9 more
doaj   +1 more source

Lumbar intervertebral discs T2 relaxometry and T1ρ relaxometry correlation with age in asymptomatic young adults [PDF]

Quantitative Imaging in Medicine and Surgery, 2016
To investigate the detection of intervertebral disc (IVD) composition aging-related changes using T2 and T1ρ relaxometry in vivo in asymptomatic young adults.We recruited ninety asymptomatic and young adults (42 men and 48 women) between 20 and 40 years old.
Rafael, Menezes-Reis, Carlos E Garrido, Salmon, Gustavo P, Bonugli, Debora, Mazoroski, Mauricio H, Tamashiro, Leonor G, Savarese, Marcello Henrique, Nogueira-Barbosa   +6 more
openaire   +2 more sources

Combined Diffusion-Relaxometry MRI to Identify Dysfunction in the Human Placenta [PDF]

, 2019
Purpose: A combined diffusion-relaxometry MR acquisition and analysis pipeline for in-vivo human placenta, which allows for exploration of coupling between T2* and apparent diffusion coefficient (ADC) measurements in a sub 10 minute scan time. Methods:
Alexander, Daniel C., Chappell, Lucy C., Hajnal, Joseph V., Ho, Alison, Hutter, Jana, Jackson, Laurence H., Palombo, Marco, Panagiotaki, Eleftheria, Rutherford, Mary, Slator, Paddy J.   +9 more
core   +2 more sources

Quantitative Comparison of Multi‐Echo Spin Echo and Multi‐Echo Gradient Echo Myelin Water Imaging in a Panel of Mbp Enhancer‐Edited Mouse Lines

Magnetic Resonance in Medicine, Volume 95, Issue 6, Page 3396-3408, June 2026.
ABSTRACT Purpose To evaluate the correspondence between myelin water fraction (MWF) estimates derived from multi‐echo spin echo (MESE) and multi‐echo gradient echo (MGRE) imaging in fixed mouse brain tissue, using a panel of myelin basic protein (Mbp) enhancer‐edited mouse lines exhibiting graded hypomyelination.
Vladimir Grouza, Yawen Shi, Sean Goldfarb, Klaudia M. Bednarz, Isabella Gomez, Marius Tuznik, Zhe Wu, Hooman Bagheri, Katherine A. Siminovitch, Alan C. Peterson, Thomas Stroh, David A. Rudko   +11 more
wiley   +1 more source

Synthesis of MR fingerprinting information from magnitude-only MR imaging data using a parallelized, multi network U-Net convolutional neural network

Frontiers in Radiology
BackgroundMR fingerprinting (MRF) is a novel method for quantitative assessment of in vivo MR relaxometry that has shown high precision and accuracy.
Kiaran P. McGee, Yi Sui, Robert J. Witte, Ananya Panda, Norbert G. Campeau, Thomaz R. Mostardeiro, Nahil Sobh, Umberto Ravaioli, Shuyue (Lucia) Zhang, Kianoush Falahkheirkhah, Nicholas B. Larson, Christopher G. Schwarz, Jeffrey L. Gunter   +12 more
doaj   +1 more source

Various methods to describe the morphological and textural characteristics of various materials

Хімія, фізика та технологія поверхні, 2018
The aim of this study was to compare a variety of methods to describe the textural characteristics of various materials. Several ways could be used to describe the morphological and textural characteristics of various materials in detail such as: (i ...
V. M. Gun'ko
doaj   +1 more source

Assessment of Optimal T1/T2‐Weighted Combinations for Myelin Sensitivity: Effects of Echo Time and Exponents

Magnetic Resonance in Medicine, Volume 95, Issue 6, Page 3176-3186, June 2026.
ABSTRACT Purpose The aim of this study is to improve the traditional T1‐weighted (T1w) over T2‐weighted (T2w) ratio as a proxy for myelin by investigating the optimal T2w TE and combination of exponent‐weighted T1w and T2w images (T1wx1/T2wx2). Methods T1w and T2w Gradient And Spin Echo (GRASE) data were acquired from 14 volunteers, 6 of whom had a ...
Simone Monachino, Gerhard S. Drenthen, Lis J. M. van den Boogaard, Marcel Breeuwer, Catarina Dinis Fernandes, Oliver H. H. Gerlach, Svitlana Zinger, Jacobus F. A. Jansen   +7 more
wiley   +1 more source

NMR Characterization of Graphene Oxide-Doped Carbon Aerogel in a Liquid Environment

Gels
In this study, we report the findings of a morphological analysis of a resorcinol–formaldehyde (RF)-based carbon aerogel (CA) and its graphene oxide (GO)-doped version (CA-GO), prepared for possible applications as an electrode material.
Dávid Nyul, Mónika Kéri, Levente Novák, Hanna Szabó, Attila Csík, István Bányai   +5 more
doaj   +1 more source

Synthetic quantitative MRI through relaxometry modelling

NMR in Biomedicine, 2016
AbstractQuantitative MRI (qMRI) provides standardized measures of specific physical parameters that are sensitive to the underlying tissue microstructure and are a first step towards achieving maps of biologically relevant metrics through in vivo histology using MRI.
Martina F. Callaghan, Siawoosh Mohammadi, Nikolaus Weiskopf   +2 more
openaire   +4 more sources