Results 151 to 160 of about 22,412 (268)

Sampling of non‐Gaussian Ensemble Average Propagators for the simulation of diffusion magnetic resonance images

Magnetic Resonance in Medicine, Volume 95, Issue 2, Page 1255-1265, February 2026.
Abstract Purpose (a) To design a methodology for drawing random samples of any Ensemble Average Propagator (EAP) (b) to modify the KomaMRI simulator to accommodate them as realistic spin movements to simulate diffusion MRI (dMRI) and (c) to compare these simulations with those based on the Diffusion Tensor (DT) model.
Justino R. Rodríguez‐Galván, Pablo Villacorta‐Aylagas, Susana Merino‐Caviedes, Federico Simmross‐Wattenberg, Carlos Castillo‐Passi, Pablo Irarrazaval, Antonio Tristán‐Vega, Carlos Alberola‐López   +7 more
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  

ISME—incoherent sampling of multi‐echo data to minimize cardiac‐induced noise in brain maps of R2*$$ {R}_2^{\ast } $$ and magnetic susceptibility

Magnetic Resonance in Medicine, Volume 95, Issue 2, Page 897-911, February 2026.
Abstract Purpose Maps of the MRI parameters R2*$$ {\mathrm{R}}_2^{\ast } $$ and magnetic susceptibility (χ$$ \chi $$) enable the investigation of microscopic tissue changes in brain disease. However, cardiac‐induced signal instabilities increase the variability of brain maps of R2*$$ {\mathrm{R}}_2^{\ast } $$ and χ$$ \chi $$.
Quentin Raynaud, Rita Oliveira, Nadège Corbin, Yaël Balbastre, Ruud B. van Heeswijk, Antoine Lutti   +5 more
wiley   +1 more source

Asphalt-Binder Mixtures Evaluated by T₁ NMR Relaxometry

Physchem
Asphalt pavements make up a majority of the essential transportation systems in the US. Asphalt mixtures age and degrade over time, reducing the pavement performance. Pavement performance critically depends on the aging of asphalt binder.
Rebecca M. Herndon, Jay Balasubramanian, Magdy Abdelrahman, Klaus Woelk   +3 more
doaj   +1 more source

Fast 3D UTE in vivo T1 and T2*$$ {\mathrm{T}}_2^{\ast } $$ mapping of fast relaxing knee tissues at 3 T

Magnetic Resonance in Medicine, Volume 95, Issue 2, Page 693-705, February 2026.
Abstract Purpose UTE MR imaging captures quantitative signals in fast‐relaxing tissues, enabling anatomical visualization and quantitative assessment of T1 and T2*$$ {\mathrm{T}}_2^{\ast } $$ relaxation times. However, the clinical application of quantitative UTE MRI is limited by long acquisition times.
Maik Rothe, Selina Riedel, Anne Slawig, Andreas Deistung, Klaus Bohndorf, Richard Brill, Walter A. Wohlgemuth, Alexander Gussew   +7 more
wiley   +1 more source

Frequency‐Dependent Diffusion–Relaxation Distribution MRI: Scan–Rescan Reproducibility Ex Vivo and Caveats

NMR in Biomedicine, Volume 39, Issue 2, February 2026.
Frequency‐dependent multidimensional (ωMD) diffusion‐relaxation MRI captures microstructural information beyond conventional voxel‐averaged metrics. Here, we evaluate ωMD‐MRI reproducibility in ex vivo mouse brains using a high‐performance micro‐imaging system.
Pak Shing Kenneth Or, Maxime Yon, Omar Narvaez, Eppu Manninen, Tarja Malm, Alejandra Sierra, Daniel Topgaard, Dan Benjamini   +7 more
wiley   +1 more source

T1ρ$$ {}_{1\rho } $$ as a Biomarker for IDH1 Mutation Status in a Glioma Mouse Model

NMR in Biomedicine, Volume 39, Issue 2, February 2026.
Mice bearing IDH1‐mutant and ‐wild‐type glioma underwent quantitative T1ρ$$ {T}_{1\rho } $$ imaging over the course of tumour development. It was found that while IDH1‐wild‐type tumours present similar T1ρ$$ {T}_{1\rho } $$ values as the brain, IDH1‐mutant tumours exhibit significantly higher T1ρ$$ {T}_{1\rho } $$ values compared with the brain. T1ρ$$ {
Hannah J. S. Ehler, Saki Sultana, Christa Davis, Kimberly Brewer, James Rioux   +4 more
wiley   +1 more source

Relaxometry for detecting free radical generation during Bacteria's response to antibiotics

Carbon, 2022
N. Norouzi, A. C. Nusantara, Yori Ong, T. Hamoh, L. Nie, Aryan Morita, Yue Zhang, A. Mzyk, R. Schirhagl   +8 more
semanticscholar   +1 more source

Ab Initio Molecular Dynamics Study of Quadrupolar Spin Relaxation in an Ionic Liquid

Journal of Computational Chemistry, Volume 47, Issue 3, 30 January 2026.
This study presents a methodology for describing the relaxation of nuclear spins (with I > 1/2), applicable to ionic liquids of a general nature. Based on ab initio molecular dynamics, we demonstrate the importance of explicit solvation in calculating the relaxation times of the quadrupolar mechanism.
Luciano N. Vidal, Lucas C. Ducati, Jochen Autschbach   +2 more
wiley   +1 more source

Time domain NMR evaluation of poly(vinyl alcohol) xerogels

Polímeros
Poly(vinyl alcohol) (PVA)-based chemically cross-linked xerogels, both neat and loaded with nanoparticulate hydrophilic silica (SiO2), were obtained and characterized mainly through time domain NMR experiments (TD-NMR). Fourier-transform infrared (FT-IR)
Elton Jorge da Rocha Rodrigues, Maxwell de Paula Cavalcante, Maria Inês Bruno Tavares   +2 more
doaj   +1 more source