Results 181 to 190 of about 67,740 (222)

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

Storing quantum coherence in a quantum dot nuclear spin ensemble for over 100 milliseconds. [PDF]

Nat Commun
Dyte HE, Manna S, Covre da Silva SF, Rastelli A, Chekhovich EA.   +4 more
europepmc   +1 more source

10.5 T In Vivo Head Imaging With Universal RF Shimming

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Brain MR imaging at 10.5 T ultra‐high field offers significant improvements in signal‐to‐noise ratio (SNR), but faces challenges with B1+ inhomogeneity. Parallel‐transmission (pTx) can be used to achieve a more uniform RF field distribution, but necessitates the use of B1+ calibration in the region of interest.
Young Woo Park, Simon Schmidt, Wolfgang Bogner, Gregory J. Metzger, Małgorzata Marjańska   +4 more
wiley   +1 more source

Quantitative evaluation of the fatty fraction of lumbar vertebral bone marrow by the 3-point water-fat separation technology of IDEAL-IQ: A preliminary study on healthy adult volunteers. [PDF]

Medicine (Baltimore)
Zhang W, Lin Y, Su L, Li W, Guo Q, Chen Y, Xiao Y.   +6 more
europepmc   +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

Prospective motion correction for R 2 * and susceptibility mapping using spherical navigators. [PDF]

Magn Reson Med
Hewlett M, Oran O, Liu J, Drangova M.
europepmc   +1 more source

Dynamic Contrast Enhanced—Magnetic Resonance Fingerprinting (DCE‐MRF) Improves Detection of Induced Vascular Perfusion Reduction in a Mouse Breast Cancer Model

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Dynamic contrast‐enhanced MRI (DCE‐MRI) can assess tumor perfusion using pharmacokinetic models. However, poor DCE‐MRI reproducibility from reliance on conventional T1‐weighted MRI has limited clinical translation. We evaluated whether Dynamic Contrast Enhanced‐Magnetic Resonance Fingerprinting (DCE‐MRF), which directly generates ...
Christina J. MacAskill, Bernadette O. Erokwu, Yuran Zhu, Guanhua Wang, Andrew Dupuis, Barbara J. Schiemann, Gopalakrishnan Ramamurthy, Chetan B. Dhakan, Michael Kavran, Chunying Wu, William P. Schiemann, Yilun Sun, Mark A. Griswold, Xin Yu, Mark D. Pagel, Chris A. Flask   +15 more
wiley   +1 more source

Absolute quantification of cerebral metabolites using two-dimensional proton MR spectroscopic imaging with quantitative MRI-based water reference. [PDF]

Magn Reson Med
Thomas DC, Alcicek S, Manzhurtsev A, Hattingen E, Wenger KJ, Pilatus U.   +5 more
europepmc   +1 more source

Quantitative Comparison of Multi‐Echo Spin Echo and Multi‐Echo Gradient Echo Myelin Water Imaging in a Panel of Mbp Enhancer‐Edited Mouse Lines

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To evaluate the correspondence between myelin water fraction (MWF) estimates derived from multi‐echo spin echo (MESE) and multi‐echo gradient echo (MGRE) imaging in fixed mouse brain tissue, using a panel of myelin basic protein (Mbp) enhancer‐edited mouse lines exhibiting graded hypomyelination.
Vladimir Grouza, Yawen Shi, Sean Goldfarb, Klaudia M. Bednarz, Isabella Gomez, Marius Tuznik, Zhe Wu, Hooman Bagheri, Katherine A. Siminovitch, Alan C. Peterson, Thomas Stroh, David A. Rudko   +11 more
wiley   +1 more source

Probing Rigidity and Fluidity in the Interfacial Region of Lipid Bilayers with a Novel IR Probe. [PDF]

J Phys Chem B
Islam MM, Nawagamuwage SU, Dennis CA, Rubtsov IV.   +3 more
europepmc   +1 more source