Results 161 to 170 of about 201,531 (312)

Next Generation 7 Tesla Arterial Spin Labeling With Rotated Spiral Acquisition Enables Mesoscale Resolution in 3D Brain Perfusion and Functional MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To achieve high resolution (≤ 1 mm isotropic) whole‐brain perfusion imaging at 7 T with next generation ASL pulse sequence, reconstruction algorithm, and MRI hardware. Methods We capitalized on three major innovations: (1) FLASH‐based pseudo‐Continuous ASL (pCASL) sequence with rotated golden‐angle stack‐of‐spirals (rGA‐SoS) sampling; (
Chenyang Zhao, Fanhua Guo, Zidong Yang, Xingfeng Shao, Samantha J. Ma, Alexander J. S. Beckett, An T. Vu, David A. Feinberg, Danny J. J. Wang   +8 more
wiley   +1 more source

Calibration‐Free GRAPE pTx Pulses for Homogeneous Spatial‐Selective Excitation at 7T

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Extend the universal pulse GRAPE formalism to pulses with a defined spectral response, and apply the concept to spatial selection. Methods We added Bloch simulations at several frequencies for each voxel to the pulse calculation to create universal spectrally‐selective GRAPE pulses.
Daniel Löwen, Eberhard D. Pracht, Marten Veldmann, Vincent Gras, Franck Mauconduit, Nicolas Boulant, Tony Stöcker   +6 more
wiley   +1 more source

Ultrafast Blood T1 Measurement Using Golden Angle Rotated Spiral k‐t Sparse Parallel Imaging (GASSP): Evaluations in Both Pre‐ and Post‐Contrast Conditions

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Blood T1 is a key parameter for hemodynamic quantification in both non‐contrast‐ and contrast‐enhanced imaging. Individual vessel T1 has been measured using a modified Look–Locker scheme with multi‐shot EPI or FLASH in high spatial resolution, requiring ∼1 min.
Zechen Xu, Feng Xu, Qin Qin, Dan Zhu
wiley   +1 more source

Microscale Assemblies of Magnetic Nanoparticles Produced by Dip‐Coating and Lift‐Off With Dissolvable Templates

Nano Select, EarlyView.
Microscale assemblies of magnetic nanoparticles (MNPs) were created using a combination of dip‐coating with ferrofluids and lift‐off with dissolvable photoresist templates. This technique produced large area arrays of geometrically precise MNP superstructures.
Samuel D. Oberdick, Alexey V. Nazarov, Gary Zabow   +2 more
wiley   +1 more source

Research on boost conversion of SiC-based laser power supply for aerospace applications. [PDF]

Sci Rep
Zhang X, Wang Y, Shi B, Liu Y.
europepmc   +1 more source

GraphReco: Probabilistic Structure Recognition for Chemical Molecules

ChemistryOpen, EarlyView.
Molecule structure images are unfriendly for machine understanding, blocking productivity improvements in chemical data mining, drug discovery, and many other fields. We present a rule‐based probabilistic Optical Chemical Structure Recognition model to explain and tackle the ambiguity challenges in graph assembly.
Haidong Wang, Yuncheng Yu, Jyh‐Charn Liu   +2 more
wiley   +1 more source

Mixed-mode control of multiphase interleaved parallel circuit for pulsed laser diode driving. [PDF]

Sci Rep
Wu B, Liu J, Zhao H, Guo J, Liu Z.
europepmc   +1 more source

Electrospun Nanofibres for Load‐Bearing Composite Materials—A Review of Techniques, Mechanical Properties and Durability

Polymer Composites, EarlyView.
Electrospun nanofibre for load‐bearing composite materials. ABSTRACT Electrospun nanofibres are emerging nanomaterials prized for their scalability, high surface area to volume ratio and yield. Their effectiveness in improving the mechanical properties of fiber reinforced composites is widely reported. Nanofibres could activate multiscale toughness and
Usaid Ahmed Shakil, Petr Hájek
wiley   +1 more source

Ghost peaks simulation and reduction in high-resolution echo-planar spectroscopic imaging with flyback readout. [PDF]

Sci Rep
Weis J, Babos M, Selvaraju RK.
europepmc   +1 more source

Free-Breathing Multi-Slice Co-Registered Cardiac T1, T2, and ADC Mapping With Spin-Echo Echo Planar Imaging. [PDF]

Magn Reson Med
ABSTRACT Purpose To develop a free‐breathing method for multi‐slice co‐registered cardiac T1, T2, and ADC maps using single‐shot spin‐echo echo planar imaging (SE‐EPI). Methods T1, T2, and diffusion weighted images in five slices were acquired with SE‐EPI readouts during free breathing using interleaved acquisition of slices, non‐selective inversion ...
Mai D, Kara D, Liu Y, Moura TRS, Sadighi M, Kanj F, Wexler E, Sosnovik D, Hanna M, Santangeli P, Nakagawa H, Wazni O, Chen D, Tang WHW, Tandon A, Kwon D, Nguyen C.   +16 more
europepmc   +2 more sources