Results 41 to 50 of about 11,299 (148)

In Vivo Mapping of Catecholaminergic Loss and Iron Deposition in Huntington's Disease

Movement Disorders, EarlyView.
Abstract Background The pathophysiology of Huntington's disease (HD) remains obscure. Magnetic resonance imaging (MRI) can reveal in vivo molecular changes related to disease pathology. Objectives To investigate catecholaminergic neuronal integrity and subcortical brain iron accumulation in HD employing neuromelanin‐sensitive MRI, and quantitative ...
Edoardo R. de Natale, Heather Wilson, Efstratios Karavasilis, Athanasia Liozidou, Chrisoula Kartanou, Georgios Velonakis, Jens Kuhle, Ioannis Zalonis, Georgia Karadima, Leonidas Stefanis, Georgios Koutsis, Marios Politis   +11 more
wiley   +1 more source

Nonlinear Dynamical Equation for Irreversible, Steepest-Entropy-Ascent Relaxation to Stable Equilibrium

, 2007
We discuss the structure and main features of the nonlinear evolution equation proposed by this author as the fundamental dynamical law within the framework of Quantum Thermodynamics.
Andrei Yu. Khrennikov, Gian Paolo Beretta, Guillaume Adenier, Pekka Lahti, Theo M. Nieuwenhuizen, Vladimir I. Man'ko   +5 more
core   +1 more source

Assessment of Optimal T1/T2‐Weighted Combinations for Myelin Sensitivity: Effects of Echo Time and Exponents

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose The aim of this study is to improve the traditional T1‐weighted (T1w) over T2‐weighted (T2w) ratio as a proxy for myelin by investigating the optimal T2w TE and combination of exponent‐weighted T1w and T2w images (T1wx1/T2wx2$$ \mathrm{T}1{\mathrm{w}}^{x_1}/\mathrm{T}2{\mathrm{w}}^{x_2} $$).
Simone Monachino, Gerhard S. Drenthen, Lis J. M. van den Boogaard, Marcel Breeuwer, Catarina Dinis Fernandes, Oliver H. H. Gerlach, Svitlana Zinger, Jacobus F. A. Jansen   +7 more
wiley   +1 more source

Quantitative Diffusion and T2 Mapping Using RF‐Modulated Phase‐Based Gradient Echo Imaging

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To introduce and evaluate the feasibility of a novel RF‐phase modulated gradient echo (GRE) method for quantitative diffusion MRI, aimed at mitigating geometric distortion and enabling high‐resolution 3D quantitative diffusion/T2 mapping as a complementary alternative to conventional DWI.
Daiki Tamada, Ali Pirasteh, David F. Jarrard, Diego Hernando, Scott B. Reeder   +4 more
wiley   +1 more source

Lindblad dynamics of the quantum spherical model

, 2017
The purely relaxational non-equilibrium dynamics of the quantum spherical model as described through a Lindblad equation is analysed. It is shown that the phenomenological requirements of reproducing the exact quantum equilibrium state as stationary ...
Henkel, Malte, Landi, Gabriel T., Wald, Sascha   +2 more
core   +1 more source

Sieving random iterative function systems

, 2020
It is known that backward iterations of independent copies of a contractive random Lipschitz function converge almost surely under mild assumptions. By a sieving (or thinning) procedure based on adding to the functions time and space components, it is ...
Marynych, Alexander, Molchanov, Ilya
core   +1 more source

Advancing Quantitative Susceptibility Mapping With 2.5D Diffusion Models for Rapid Intracranial Hemorrhage Quantification

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop a generative diffusion model‐based approach for robust and efficient quantitative susceptibility mapping (QSM) reconstruction in intracranial hemorrhage (ICH), applicable to both standard gradient echo (GRE) and rapid echo planar imaging (EPI) acquisitions.
Zhuang Xiong, Yang Gao, Feng Liu, Derek Emery, Ken Butcher, Alan H. Wilman, Hongfu Sun   +6 more
wiley   +1 more source

Bidirectional genetic and phenotypic links between smoking and striatal iron content involving dopaminergic and inflammatory pathways

Addiction, EarlyView.
Abstract Background and aims Tobacco smoking is a major risk factor for cardiovascular and lung diseases. A better understanding of its neurobiological underpinnings will benefit the prevention of smoking‐related illnesses and mortality. Previous studies link smoking to increased iron concentration in the striatum, a central component of the brain's ...
Olga Trofimova, Ilaria Iuliani, Sven Bergmann   +2 more
wiley   +1 more source

Quantitative Susceptibility Mapping (QSM) Algorithms: Mathematical Rationale and Computational Implementations [PDF]

IEEE Transactions on Biomedical Engineering, 2017
Quantitative susceptibility mapping (QSM) solves the magnetic field-to-magnetization (tissue susceptibility) inverse problem under conditions of noisy and incomplete field data acquired using magnetic resonance imaging. Therefore, sophisticated algorithms are necessary to treat the ill-posed nature of the problem and are reviewed here.
Youngwook Kee, Zhe Liu, Liangdong Zhou, Alexey Dimov, Junghun Cho, Ludovic de Rochefort, Jin Keun Seo, Yi Wang   +7 more
openaire   +3 more sources

Sustainability Reporting in Higher Education: A Systematic Review and Bibliometric Analysis for Strategic Decision‐Making

Business Ethics, the Environment &Responsibility, EarlyView.
ABSTRACT The communication of sustainable development is essential for higher education institutions (HEIs), which voluntarily prepare sustainability reports (SRs) to demonstrate commitment and inform strategic decision‐making. This study conducts a systematic literature review (SLR) to identify and analyze the challenges associated with implementing ...
Valerio Brescia, Lorenzo Coronella, Silvana Secinaro, Alessandro Mechelli   +3 more
wiley   +1 more source