Results 131 to 140 of about 25,300,669 (221)

Whole‐Brain Diffusion MRI at 7T With Universal Multiband GRAPE pTx Pulses

Magnetic Resonance in Medicine, EarlyView.
Purpose To improve signal strength and homogeneity of whole‐brain diffusion‐weighted imaging (DWI) at 7T. Methods Universal multiband excitation and refocusing pulses were optimized with the gradient ascent pulse engineering (GRAPE) algorithm across a database of B1+$$ {B}_1^{+} $$ and B0$$ {B}_0 $$ maps obtained from 20 subjects.
Marten Laufenberg, Daniel Löwen, Mónica Ferreira, Nicolas Boulant, Jennifer Faber, Tony Stöcker   +5 more
wiley   +1 more source

Solving the cooling flow problem with combined jet-wind AGN feedback. [PDF]

Sci Adv
He A, Yuan F, Ji S, Guo M, Li Y, Xu H, Sun M, Xia H, Zhao Y.   +8 more
europepmc   +1 more source

Predicting Mesoscopic Larmor Frequency Shifts in Ex Vivo Porcine Optic Nerve

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Larmor frequency shifts in white matter (WM) vary with fiber orientation due to anisotropic microstructure. Since clinical voxels are significantly larger than these microscopic frequency variations, the measured signal represents a bulk average of local shifts.
Anders Dyhr Sandgaard, André Pampel, Roland Müller, Niklas Wallstein, Toralf Mildner, Carsten Jäger, Markus Morawski, Aage Kristian Olsen Alstrup, Harald E. Möller, Sune Nørhøj Jespersen   +9 more
wiley   +1 more source

Correction: A novel approach for proton therapy pencil beam scanning patient specific quality assurance using an integrated detector system and 3D dose reconstruction. [PDF]

Front Oncol
Bateman JJ, Escribano-Rodriguez S, Flynn S, Price T, Radogna R, Shaikh S, Barnett H, Godden C, Warren M, Febian, Burne C, Warry A, Harrison-Carey L, Baker C, Jolly S.   +14 more
europepmc   +1 more source

Dual‐Tuned 31P‐1H Dual‐Row Loop/Dipole 32‐Element Transceiver Array for Human Brain Spectroscopy at 9.4T

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose The goal of this work is to develop and evaluate a single‐layer tight‐fit 32‐element dual‐tuned (DT) loop/dipole transceiver (TxRx) array for human brain 31P MRS(I) at 9.4T, achieving full‐brain coverage and reasonable transmit and receive performance at both frequencies.
G. A. Solomakha, R. Pohmann, F. Glang, S. Mueller, P. I. Valsala, T. Platt, S. Orzada, M. E. Ladd, A. Korzowski, K. Scheffler, N. I. Avdievich   +10 more
wiley   +1 more source

Evidence for the gravity-driven and magnetically regularized gas flows feeding the massive protostellar cluster in Cepheus A. [PDF]

Sci Adv
Sandhyarani P, Eswaraiah C, Li D, Vázquez-Semadeni E, Gómez GC, Thieme TJ, Samal MR, Wang JW, Lai SP, Chen WP, Ojha DK.   +10 more
europepmc   +1 more source

Toward Brain Biosignature at 7 T—Repeatability of a Multiparametric CEST, QSM, QTI, and Sodium Imaging Protocol

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To evaluate the repeatability of an extended multiparametric 7 T MRI protocol for voxel‐wise tissue characterization combining morphological, CEST, QSM, QTI, and Sodium contrasts. Methods A repeatability study was performed in 12 volunteers without diagnosed neurological disease on a 7 T MRI system, using a comprehensive acquisition ...
Annika Hofmann, Martin Freudensprung, Lion Mücke, Tobias Wilferth, Zijin Yang, Dominik Perrin, Julius Glaser, Katharina Tkotz, Magda Duarte, Simon Weinmüller, Oliver Chaudry, Annemarie Wirth, Angelika Mennecke, Oliver Gödicke, Patrick Liebig, Lena V. Gast, Philipp Ehses, Clemens Stilianu, Rudolf Stollberger, Jannis Hanspach, Alexander German, Jürgen Winkler, Michael Uder, Arnd Doerfler, Sebastian Bickelhaupt, Andreas Maier, Katharina Breininger, Moritz Zaiss, Armin M. Nagel, Frederik B. Laun, Florian Knoll   +30 more
wiley   +1 more source

A decagon wave around Saturn's south pole. [PDF]

Sci Adv
Sánchez-Lavega A, Simon AA, Wong MH, Fletcher LN, Antuñano A, Hueso R, Iñurrigarro P, Flix-Bellmunt A, Miró A, García-Melendo E, Barry T, Oger JP, Orton GS, Garate-Lopez I.   +13 more
europepmc   +1 more source

Lightning electromagnetic emission location using arrival time differencing (LEELA): An introduction to the Met Office's next generation Very Low Frequency lightning location system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This paper describes the Met Office's new lightning location system LEELA. A brief overview of the upgraded hardware and geolocation algorithms is given. LEELA has improved lightning detection capabilities, especially at night. When comparing LEELA to the previous ATDnet system against ground truths LEELA has 100% storm detection efficiency within 5 km
Graeme Marlton, Mike Protts, Stephen Prust, Edmund Keith Stone, Debbie O'Sullivan, Sue Twelves, Francesco Devoto, Claire Witham   +7 more
wiley   +1 more source

Interaction-driven flat band and charge order in Fe₅GeTe₂. [PDF]

Sci Adv
Gao Q, Berruto G, Nguyen KD, Hu C, Malinowski P, Lin H, Goh B, Jang BG, Xu X, Littlewood P, Chu JH, Yang S.   +11 more
europepmc   +1 more source