Results 11 to 20 of about 181,158 (299)

Neuroimaging of Parkinson's disease by quantitative susceptibility mapping

NeuroImage
Parkinson's disease (PD) is a common neurodegenerative disease, and apart from a few rare genetic causes, its pathogenesis remains largely unclear. Recent scientific interest has been captured by the involvement of iron biochemistry and the disruption of
Xiaojun Guan, Marta Lancione, Scott Ayton, Petr Dusek, Christian Langkammer, Minming Zhang   +5 more
doaj   +5 more sources

APART-QSM: An improved sub-voxel quantitative susceptibility mapping for susceptibility source separation using an iterative data fitting method

NeuroImage, 2023
The brain tissue phase contrast in MRI sequences reflects the spatial distributions of multiple substances, such as iron, myelin, calcium, and proteins. These substances with paramagnetic and diamagnetic susceptibilities often colocalize in one voxel in ...
Zhenghao Li, Ruimin Feng, Qiangqiang Liu, Jie Feng, Guoyan Lao, Ming Zhang, Jun Li, Yuyao Zhang, Hongjiang Wei   +8 more
doaj   +2 more sources

MoDL-QSM: Model-based deep learning for quantitative susceptibility mapping [PDF]

NeuroImage, 2021
Quantitative susceptibility mapping (QSM) has demonstrated great potential in quantifying tissue susceptibility in various brain diseases. However, the intrinsic ill-posed inverse problem relating the tissue phase to the underlying susceptibility ...
Ruimin Feng, Jiayi Zhao, He Wang, Baofeng Yang, Jie Feng, Yuting Shi, Ming Zhang, Chunlei Liu, Yuyao Zhang, Jie Zhuang, Hongjiang Wei   +10 more
doaj   +2 more sources

Thin slab quantitative susceptibility mapping

Magnetic Resonance in Medicine, 2023
AbstractPurposeSusceptibility maps reconstructed from thin slabs may suffer underestimation due to background‐field removal imperfections near slab boundaries and the increased difficulty of solving a 3D‐inversion problem with reduced support, particularly in the direction of the main magnetic field.
Nashwan Naji, Alan Wilman
openaire   +3 more sources

Quantitative susceptibility mapping in atypical Parkinsonisms

NeuroImage: Clinical, 2019
Background and purpose: Differential diagnosis between Parkinson's disease (PD) and Atypical Parkinsonisms, mainly Progressive Supranuclear Palsy (PSP) and Multiple System Atrophy (MSA), remains challenging. The low sensitivity of macroscopic findings at
Sonia Mazzucchi, Daniela Frosini, Mauro Costagli, Eleonora Del Prete, Graziella Donatelli, Paolo Cecchi, Gianmichele Migaleddu, Ubaldo Bonuccelli, Roberto Ceravolo, Mirco Cosottini   +9 more
doaj   +3 more sources

Insights From Quantitative Susceptibility Mapping: An Umbrella Review of Multiple Sclerosis [PDF]

Health Science Reports
Background and Aims Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system characterized by demyelination and neurodegeneration. Conventional MRI techniques lack specificity for detecting subtle pathological changes, such
Sadegh Ghaderi, Sana Mohammadi, Farzad Fatehi   +2 more
doaj   +2 more sources

The diamagnetic component map from quantitative susceptibility mapping (QSM) source separation reveals pathological alteration in Alzheimer’s disease-driven neurodegeneration

NeuroImage, 2023
A sensitive and accurate imaging technique capable of tracking the disease progression of Alzheimer's Disease (AD) driven amnestic dementia would be beneficial.
Maruf Ahmed, Jingjia Chen, Arvin Arani, Matthew L. Senjem, Petrice M. Cogswell, Clifford R. Jack, Jr., Chunlei Liu   +6 more
doaj   +2 more sources

Quantitative Susceptibility Mapping in Parkinson's Disease.

PLoS ONE, 2016
BackgroundQuantitative susceptibility mapping (QSM) and R2* relaxation rate mapping have demonstrated increased iron deposition in the substantia nigra of patients with idiopathic Parkinson's disease (PD).
Christian Langkammer, Lukas Pirpamer, Stephan Seiler, Andreas Deistung, Ferdinand Schweser, Sebastian Franthal, Nina Homayoon, Petra Katschnig-Winter, Mariella Koegl-Wallner, Tamara Pendl, Eva Maria Stoegerer, Karoline Wenzel, Franz Fazekas, Stefan Ropele, Jürgen Rainer Reichenbach, Reinhold Schmidt, Petra Schwingenschuh   +16 more
doaj   +3 more sources

QSMART: Quantitative susceptibility mapping artifact reduction technique

NeuroImage, 2021
Purpose: Quantitative susceptibility mapping (QSM) is a novel MR technique that allows mapping of tissue susceptibility values from MR phase images. QSM is an ill-conditioned inverse problem, and although several methods have been proposed in the field ...
Negin Yaghmaie, Warda Syeda, Chengchuan Wu   +2 more
exaly   +3 more sources

Quantitative susceptibility mapping of brain iron in adult ADHD [PDF]

Frontiers in Psychiatry
BackgroundAttention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental condition that frequently persists into adulthood and is linked to alterations in fronto-striatal circuitry and dopaminergic signaling. Brain iron is essential for dopamine
Marcel Schulze, Erik Autenrieth, Behrem Aslan, Rüdiger Stirnberg, Tony Stoecker, Tony Stoecker, Silke Lux, David Coghill, David Coghill, David Coghill, Tim Silk, Tim Silk, Alexandra Philipsen   +12 more
doaj   +2 more sources