Results 151 to 160 of about 178,756 (227)

Time‐Division Multiplexing for Parallel Transmission at Ultra‐High Field With Limited RF Channels

Magnetic Resonance in Medicine, Volume 95, Issue 5, Page 2580-2593, May 2026.
ABSTRACT Purpose Investigating time‐division multiplexing for parallel transmission in ultra high‐field imaging, striving for homogeneous whole brain excitation with a limited number of RF channels. Methods A fast RF switch was built to alternately route 8 transmit channels to each row of a double‐row 16‐element transmit coil array at a 9.4 T human MRI
Felix Glang, Georgiy A. Solomakha, Dario Bosch, Klaus Scheffler, Nikolai I. Avdievich   +4 more
wiley   +1 more source

The impact of the exponential Kernel's bandwidth parameter on learning algorithms. [PDF]

Sci Rep
Almahdawi MA.
europepmc   +1 more source

Field Strength‐Dependent White Matter R1 and R2 Anisotropy of Phase‐Cycled Balanced Steady‐State Free Precession Relaxometry

Magnetic Resonance in Medicine, Volume 95, Issue 5, Page 2873-2891, May 2026.
ABSTRACT Purpose To investigate how the relaxation rates (R1, R2) and asymmetry indices (AI), derived from phase‐cycled balanced steady‐state free precession (pc‐bSSFP) data, depend on the orientation of white matter (WM) fiber tracts at different field strengths.
Florian Birk, Hamzeh Tesh, Ali Aghaeifar, Svenja Klinkowski, Praveen Iyyappan Valsala, Sebastian Mueller, Svenja Brodt, Klaus Scheffler, Rahel Heule   +8 more
wiley   +1 more source

Ion-Specific Modulation of the Conformation and Compactness of DNA Oligo-Catenanes. [PDF]

J Phys Chem B
Alexiou TS, Likos CN.
europepmc   +1 more source

Spatial Image Gradient Estimation From the Diffusion MRI Profile

Magnetic Resonance in Medicine, Volume 95, Issue 5, Page 2980-2991, May 2026.
ABSTRACT Purpose In the course of diffusion, water molecules encounter varying values for the relaxation‐time properties of the underlying tissue. This factor, which has rarely been accounted for in diffusion MRI (dMRI), is modeled in this work, allowing for the estimation of the gradient of relaxation‐time properties from the dMRI signal. Methods With
Iman Aganj, Thorsten Feiweier, John E. Kirsch, Bruce R. Fischl, Andre J. van der Kouwe   +4 more
wiley   +1 more source

Dynamical modulation of hippocampal replay through firing rate adaptation. [PDF]

Nat Commun
Ji Z, Chu T, Dong X, Yu C, Bush D, Burgess N, Wu S.   +6 more
europepmc   +1 more source

Monte Carlo Assessment of Accuracy for Mean Kärger Model Water Exchange Rate Estimates From Diffusional Kurtosis Time Dependence

NMR in Biomedicine, Volume 39, Issue 5, May 2026.
Monte Carlo simulations for water diffusing through a packing of parallel, randomly placed, permeable cylinders are used to assess the accuracy of a new diffusion MRI method for estimating the mean water exchange rate in brain. The exchange rate estimate is derived from the logarithmic derivative of the diffusional kurtosis with respect to the ...
Jens H. Jensen, Ricardo Coronado‐Leija, Els Fieremans   +2 more
wiley   +1 more source

A Logratio Approach to the Analysis of Autosomal Genotype Frequencies Across Multiple Samples. [PDF]

Mol Ecol Resour
Graffelman J.
europepmc   +1 more source

Does Knowledge Empower Climate Action? The Moderating Role of Governance in the Education–Carbon Neutrality Nexus

Journal of Public Affairs, Volume 26, Issue 2, May 2026.
ABSTRACT This study explores how governance quality moderates the impact of education on carbon emissions in 119 developing countries from 2003 to 2021. Using a two‐step System GMM approach, it examines the roles of primary, secondary, and tertiary education alongside six governance indicators.
Charles Shaaba Saba, Ariane Ephemia Ndzignat Mouteyica, Nicholas Ngepah   +2 more
wiley   +1 more source

Stochastic activity in low-rank recurrent neural networks. [PDF]

PLoS Comput Biol
Mastrogiuseppe F, Carmona J, Machens CK.
europepmc   +1 more source