Results 11 to 20 of about 129,335 (167)

Double oscillating diffusion encoding and sensitivity to microscopic anisotropy [PDF]

Magnetic resonance in medicine, 2016
PURPOSE: To introduce a novel diffusion pulse sequence, namely double oscillating diffusion encoding (DODE), and to investigate whether it adds sensitivity to microscopic diffusion anisotropy (µA) compared to the well-established double diffusion ...
Alexander, DC, Drobnjak, I, Ianuş, A, Shemesh, N   +3 more
core   +7 more sources

Pore size estimation from double diffusion encoding

Current Directions in Biomedical Engineering, 2017
Double diffusion encoding is a magnetic resonance technique with applications in measuring microstructure. In many tissues, cell size (which is of a few micrometers) is an important biological parameter.
Methot Vincent, Ulloa Patricia, Koch Martin A.   +2 more
doaj   +3 more sources

Distinguishing neuronal from astrocytic subcellular microstructures using in vivo Double Diffusion Encoded 1H MRS at 21.1 T. [PDF]

PLoS ONE, 2017
Measuring cellular microstructures non-invasively and achieving specificity towards a cell-type population within an interrogated in vivo tissue, remains an outstanding challenge in brain research.
Noam Shemesh, Jens T Rosenberg, Jean-Nicolas Dumez, Samuel C Grant, Lucio Frydman   +4 more
doaj   +4 more sources

Double diffusion encoding MRI for the clinic. [PDF]

Magn Reson Med, 2018
PurposeThe purpose of this study is to develop double diffusion encoding (DDE) MRI methods for clinical use. Microscopic diffusion anisotropy measurements from DDE promise greater specificity to changes in tissue microstructure compared with conventional diffusion tensor imaging, but implementation of DDE sequences on whole‐body MRI scanners is ...
Yang G, Tian Q, Leuze C, Wintermark M, McNab JA.   +4 more
europepmc   +4 more sources

Extra-axonal contribution to double diffusion encoding-based pore size estimates in the corticospinal tract. [PDF]

MAGMA, 2023
Abstract Objective To study the origin of compartment size overestimation in double diffusion encoding MRI (DDE) in vivo experiments in the human corticospinal tract. Here, the extracellular space is hypothesized to be the origin of the DDE signal.
Ulloa P, Methot V, Wottschel V, Koch MA.
europepmc   +3 more sources

In vivo microscopic diffusional kurtosis imaging with symmetrized double diffusion encoding EPI. [PDF]

Magn Reson Med, 2019
PurposeDiffusional kurtosis imaging (DKI) measures the deviation of the displacement probability from a normal distribution, complementing the data commonly acquired by diffusion MRI. It is important to elucidate the sources of kurtosis contrast, particularly in biological tissues where microscopic kurtosis (intrinsic kurtosis) and diffusional ...
Ji Y, Paulsen J, Zhou IY, Lu D, Machado P, Qiu B, Song YQ, Sun PZ.   +7 more
europepmc   +4 more sources

Double diffusion encoding and applications for biomedical imaging [PDF]

Journal of Neuroscience Methods, 2021
Diffusion Magnetic Resonance Imaging (dMRI) is one of the most important contemporary non-invasive modalities for probing tissue structure at the microscopic scale. The majority of dMRI techniques employ standard single diffusion encoding (SDE) measurements, covering different sequence parameter ranges depending on the complexity of the method ...
Henriques, Rafael N., Palombo, Marco, Jespersen, Sune N., Shemesh, Noam, Lundell, Henrik, Ianuş, Andrada   +5 more
openaire   +4 more sources

A double scrambling-DNA row and column closed loop image encryption algorithm based on chaotic system.

PLoS ONE, 2022
In this paper, a dynamic update algorithm of double scrambling-DNA row and column closed loop based on chaotic system is proposed. The classical scrambling and diffusion structure are used in the whole process.
Weiyu Ran, Erfu Wang, Zhiyong Tong
doaj   +2 more sources

Microscopic Fractional Anisotropy Detects Cognitive Training-Induced Microstructural Brain Changes

Tomography, 2022
Cognitive training-induced neuroplastic brain changes have been reported. This prospective study evaluated whether microscopic fractional anisotropy (μFA) derived from double diffusion encoding (DDE) MRI could detect brain changes following a 4 week ...
Xinnan Li, Daisuke Sawamura, Hiroyuki Hamaguchi, Yuta Urushibata, Thorsten Feiweier, Keita Ogawa, Khin Khin Tha   +6 more
doaj   +1 more source

Eddy current compensated double diffusion encoded (DDE) MRI [PDF]

Magnetic Resonance in Medicine, 2015
PurposeEddy currents might lead to image distortions in diffusion‐weighted echo planar imaging. A method is proposed to reduce their effects on double diffusion encoding (DDE) MRI experiments and the thereby derived microscopic fractional anisotropy (μFA).MethodsThe twice‐refocused spin echo scheme was adapted for DDE measurements. To assess the effect
Mueller, Lars, Wetscherek, Andreas, Kuder, Tristan Anselm, Laun, Frederik Bernd   +3 more
openaire   +3 more sources