Results 1 to 10 of about 226,708 (241)

Quantitative susceptibility mapping in magnetically inhomogeneous tissues. [PDF]

Magn Reson Med
AbstractPurposeConventional quantitative susceptibility mapping (QSM) methods rely on simplified physical models that assume isotropic and homogeneous tissue properties, leading to artifacts and inaccuracies in biological tissues. This study aims to develop and evaluate DEEPOLE, a deep learning–based method that incorporates macroscopically nondipolar ...
Jochmann T, Salman F, Dwyer MG, Bergsland N, Zivadinov R, Haueisen J, Schweser F.   +6 more
europepmc   +5 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 T. Syeda, Chengchuan Wu, Yicheng Zhang, Tracy D. Zhang, Emma L. Burrows, Amy Brodtmann, Bradford A. Moffat, David K. Wright, Rebecca Glarin, Scott Kolbe, Leigh A. Johnston   +11 more
doaj   +4 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

Probing white-matter microstructure with higher-order diffusion tensors and susceptibility tensor MRI [PDF]

Frontiers in Integrative Neuroscience, 2013
Diffusion MRI has become an invaluable tool for studying white matter microstructure and brain connectivity. The emergence of quantitative susceptibility mapping and susceptibility tensor imaging has provided another unique tool for assessing the ...
Chunlei eLiu, Chunlei eLiu, Nicole eMurphy, Wei eLi   +3 more
doaj   +3 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

Editorial: Quantitative Susceptibility Mapping in Neurodegeneration [PDF]

Frontiers in Neuroscience, 2021
Fuhua Yan, Naying He, E. Mark Haacke, E. Mark Haacke   +3 more
doaj   +3 more sources

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   +4 more sources

Functional quantitative susceptibility mapping (fQSM) [PDF]

NeuroImage, 2014
Blood oxygenation level dependent (BOLD) functional magnetic resonance imaging (fMRI) is a powerful technique, typically based on the statistical analysis of the magnitude component of the complex time-series. Here, we additionally interrogated the phase data of the fMRI time-series and used quantitative susceptibility mapping (QSM) in order to ...
Dávid Z. Balla, Rosa M. Sanchez-Panchuelo, Samuel J. Wharton, Gisela E. Hagberg, Klaus Scheffler, Susan T. Francis, Richard Bowtell   +6 more
openaire   +7 more sources

Functional quantitative susceptibility mapping (fQSM) of rat brain during flashing light stimulation

NeuroImage, 2021
Functional magnetic resonance imaging (fMRI) based on the blood oxygenation level-dependent (BOLD) contrast has become an indispensable tool in neuroscience.
Chia-Ming Shih, Hsin-Chih Lo, Meng-Chi Hsieh, Jyh-Horng Chen   +3 more
doaj   +1 more source

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   +2 more sources