Results 81 to 90 of about 10,176 (239)

¹H NMR Sensor for Nondestructive Characterization of Organic and Inorganic Materials

Sensors
Nuclear magnetic resonance relaxation of the proton spins of liquid molecules and their evolution during processes such as drying, fluid flow, and phase change of a sample can be monitored in a nondestructive way.
Floriberto Díaz-Díaz, Prisciliano F. de J. Cano-Barrita, Frank M. León-Martínez, Víktor Acevedo-Arzola   +3 more
doaj   +1 more source

Methods for Uncertainty Quantification in Dictionary Matching to Advance Reliability of Quantitative MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Aims Purpose: Dictionary matching is a standard tool in quantitative MRI (qMRI), but typically lacks uncertainty quantification (UQ). This is critical when advanced reconstructions (e.g., compressed sensing, deep learning) introduce complex‐valued, spatially varying, and temporally correlated noise that violates standard assumptions of ...
Brian Toner, Ute Goerke, Eze Ahanonu, Kevin Johnson, Vibhas Deshpande, Holden H. Wu, Maria I. Altbach, Ali Bilgin   +7 more
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

Simultaneous T2, T2*, and R2′ Mapping for Multiple Sclerosis Using Nonlinear Model‐Based Reconstruction of Undersampled Radial RARE‐EPI MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To demonstrate the synergy of undersampled radial 2in1‐RARE‐EPI acquisition and nonlinear model‐based reconstruction for accelerated and simultaneous T2, T2*, and R2′ mapping in brains of patients with multiple sclerosis (MS). Methods 2in1‐RARE‐EPI combines a RARE module with an EPI module to capture T2 and T2* information.
Jose Raul Velasquez Vides, Carl J. J. Herrmann, Thomas Gladytz, Hoby P. Hetherington, Hendrik Mattern, Xiaoqing Wang, Jason M. Millward, Shahriar Shalikar, Igor Fabian Tellez Ceja, Beate Endemann, Sonia Waiczies, Joseph Kuchling, Friedemann Paul, Georg Rose, Min‐Chi Ku, Franz Schmitt, Thoralf Niendorf   +16 more
wiley   +1 more source

H Nuclear Magnetic Resonance Relaxometry Study

, 2021
Rare sugars are monosaccharides and their derivatives that are not commonly found in nature. D-Allulose is a rare sugar that is C-3 epimer of fructose and presents an alternative to sucrose with potential health benefits. In this study, different amounts
Beira, Maria J., Mecit H. Oztop, Maria J. Beira, Pedro J. Sebastião, Oztop, Mecit H., Sebastiao, Pedro J., Ates, Elif Gokcen, Elif Gokcen Ates   +7 more
core   +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

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

Optimization of MRI Relaxometry for BMD Measurement and Its Correlation with DEXA

پزشکی بالینی ابن سینا, 2005
Introduction & Objective : The aim of this study was to optimize MRI conventional protocols for BMD(Bone Mineral Density) measurements using MRI Relaxometry in systems not facilitated with special multi echo protocols. Since, cortical and trabecular bone
Morteza Bakhtiari, Nader Riahi Alam, Mohammad Ali Oghabian, Ali Ghasemzadeh, Hosein Ghenaati, Saeed Sarkar, Bagher Larijani, Zohreh Hamidi Abarghooyi, naser Shakeri   +8 more
doaj  

Deep‐Learning‐Based Image Reconstruction to Improve End‐Diastolic and Systolic Cardiac T1 Mapping

Magnetic Resonance in Medicine, Volume 96, Issue 2, Page 892-907, August 2026.
ABSTRACT Purpose To develop an image reconstruction method that enables increased spatial resolution cardiac T1 mapping in both the end‐diastolic and systolic phase, that shows high T1 agreement with the clinical standard. The resolution gain is achieved by increasing the acceleration rate of MOLLI single‐shot images to R = 4, while maintaining a ...
Daniel Amsel, Jens Wetzl, Daniel Giese, Christoph Tillmanns, Rolf Gebker, Kelvin Chow, Michaela Schmidt, Andreas Lingg, Jens Kübler, Patrick Krumm, Thomas Küstner   +10 more
wiley   +1 more source

19F NMR Relaxometry and Diffusometry for Measuring Cargo Molecule Dynamics in GelMA Hydrogels

Macromolecular Materials and Engineering
Understanding payload diffusion is an important topic in hydrogel drug delivery. While proton nuclear magnetic resonance (NMR) spectroscopy allows for direct examination of water dynamics in hydrogels, it is challenging to study the dynamics of payloads ...
Chun‐Wei Chang, Bronwin L. Dargaville, Konstantin I. Momot, Dietmar W. Hutmacher   +3 more
doaj   +1 more source