Results 221 to 230 of about 345,011 (278)

A Low‐Cost and Compact High‐Frequency Gallium Nitride Gradient Power Amplifier for Low‐Field MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To reduce the upfront cost of small, low‐field MRI systems, while expanding the capabilities of their gradient systems. Methods A gradient power amplifier was designed to leverage the lowering cost of Gallium Nitride (GaN) power transistors and high speed logic, to achieve high efficiency and responsiveness for driving gradient coils ...
N. Reid Bolding, Jacob Hannan, Christopher Vaughn, Aria Patel, Snow Lin, Jessie E. P. Sun, William Grissom, Mark A. Griswold   +7 more
wiley   +1 more source

Phenotypic discovery and therapeutic evaluation of an <i>ITGA3B1</i>-targeting antibody-drug conjugate for bladder cancer. [PDF]

Sci Adv
Lee J, Jung H, Kim EG, Ahn J, Haffner MC, Nelson PS, Kim KP, Lee JK, Yi EC, Kim KM.   +9 more
europepmc   +1 more source

Strong‐Gradient Diffusion‐Weighted Imaging of Prostate Cancer Using an Inside‐Out Nonlinear Gradient Coil

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To demonstrate improved image quality and lesion conspicuity in prostate diffusion‐weighted imaging (DWI) using an inside‐out nonlinear gradient coil that provides locally strong gradients (200–500 500 mT/m) at typical prostate positions.
Horace Z. Zhang, Nahla M. H. Elsaid, Terence W. Nixon, Andrew Dewdney, Dana C. Peters, Jeffrey C. Weinreb, Preston C. Sprenkle, R. Todd Constable, Gigi Galiana   +8 more
wiley   +1 more source

An explanation for why tissues with T2 of around 70 milliseconds always measure low MRI apparent diffusion coefficient (ADC). [PDF]

Quant Imaging Med Surg
Wáng YXJ.
europepmc   +1 more source

Spatial Image Gradient Estimation From the Diffusion MRI Profile

Magnetic Resonance in Medicine, EarlyView.
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

Long-term outcomes of TIPS assessed by MRI features in patients with portal hypertension and hepatocellular carcinoma: A retrospective study. [PDF]

Medicine (Baltimore)
Niu C, An J, Guo X, Zhang Y, Ma L, Zheng N, Zhou S.   +6 more
europepmc   +1 more source

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

Ligand flexibility as a concept to unlock catalytic activity: acyclic carbenes for base-free transfer ruthenium hydrogenation catalysis. [PDF]

Chem Sci
Righetti G, Koidan G, Filimonchuk SL, Shishkina S, Kostyuk A, Albrecht M.   +5 more
europepmc   +1 more source

On‐Scanner Correction of Gradient Nonlinearity Bias for Accurate Assessment of Diffusion Heterogeneity Across Bone Sites in Myelofibrosis Patients

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To improve accuracy of apparent diffusion coefficient (ADC) measurement across different bone‐marrow (BM) sites for myelofibrosis (MF) patients. Methods Vendor‐provided ADC gradient nonlinearity correction (GNC) was implemented for 41 MF study subjects on a 3T clinical scanner.
Dariya Malyarenko, Brian D. Ross, Johannes M. Peeters, Ajit Devaraj, Ramin Jafari, Humera Tariq, Kristen M. Pettit, Moshe Talpaz, Gary D. Luker, Thomas L. Chenevert   +9 more
wiley   +1 more source