Results 41 to 50 of about 2,739 (132)

Evaluation of Phantom Doping Materials in Quantitative Susceptibility Mapping

Magnetic Resonance in Medicine, Volume 96, Issue 4, Page 1545-1556, October 2026.
ABSTRACT Purpose To measure magnetic susceptibility (χ) with Quantitative Susceptibility Mapping (QSM) and evaluate its repeatability using four phantom doping materials relevant to QSM applications. Methods A cylindrical phantom was constructed containing vials of agarose gel doped with two paramagnetic materials (ferritin, USPIO) and two diamagnetic ...
Padriac Hooper, Jin Jin, Kieran O'Brien, Monique Tourell, Simon Daniel Robinson, Markus Barth   +5 more
wiley   +1 more source

Quantitative Susceptibility Mapping of the Basal Ganglia and Thalamus at 9.4 Tesla

Frontiers in Neuroanatomy, 2021
The thalamus (Th) and basal ganglia (BG) are central subcortical connectivity hubs of the human brain, whose functional anatomy is still under intense investigation.
Vinod Jangir Kumar, Klaus Scheffler, Klaus Scheffler, Gisela E. Hagberg, Gisela E. Hagberg, Wolfgang Grodd   +5 more
doaj   +1 more source

Quantitative Susceptibility Mapping of Kidney Stones: An Ex Vivo MRI Phantom Study

Magnetic Resonance in Medicine, Volume 96, Issue 4, Page 1846-1859, October 2026.
ABSTRACT Purpose To visualize and characterize the five most common kidney stone types based on their magnetic susceptibilities in MRI using QSM. Methods Three water‐based agar phantoms were constructed, containing a total of 53 ex vivo kidney stones of varying types and sizes.
Lion H. Mücke, Frederik B. Laun, Ruben de Figueiredo Cardoso, Guillaume Flé, Jennifer Lorenz, Alexander Fichte, Michael Uder, Nadine Bayerl, Jannis Hanspach   +8 more
wiley   +1 more source

MRI R2* and quantitative susceptibility mapping in brain tissue with extreme iron overload

European Radiology Experimental
Background R2* and quantitative susceptibility mapping (QSM) are regarded as robust techniques for assessing iron content in the brain. While these techniques are established for normal or moderate iron levels, their usability in extreme iron overload ...
Christoph Birkl, Marlene Panzer, Christian Kames, Anna Maria Birkl-Toeglhofer, Alexander Rauscher, Bernhard Glodny, Elke R. Gizewski, Heinz Zoller   +7 more
doaj   +1 more source

Distribution Indices of Magnetic Susceptibility Values in the Primary Motor Cortex Enable to Classify Patients with Amyotrophic Lateral Sclerosis

Brain Sciences, 2022
Quantitative Susceptibility Mapping (QSM) can measure iron concentration increase in the primary motor cortex (M1) of patients with Amyotrophic Lateral Sclerosis (ALS).
Mauro Costagli, Graziella Donatelli, Paolo Cecchi, Paolo Bosco, Gianmichele Migaleddu, Gabriele Siciliano, Mirco Cosottini   +6 more
doaj   +1 more source

Simultaneous T2, T2*, and R2′ Mapping for Multiple Sclerosis Using Nonlinear Model‐Based Reconstruction of Undersampled Radial RARE‐EPI MRI

Magnetic Resonance in Medicine, Volume 96, Issue 4, Page 1872-1892, October 2026.
ABSTRACT Purpose To demonstrate the synergy of undersampled radial 2in1‐RARE‐EPI acquisition and nonlinear model‐based reconstruction for accelerated and simultaneous T2, T2*, and R2′ mapping in brains of patients with multiple sclerosis (MS). Methods 2in1‐RARE‐EPI combines a RARE module with an EPI module to capture T2 and T2* information.
Jose Raul Velasquez Vides, Carl J. J. Herrmann, Thomas Gladytz, Hoby P. Hetherington, Hendrik Mattern, Xiaoqing Wang, Jason M. Millward, Shahriar Shalikar, Igor Fabian Tellez Ceja, Beate Endemann, Sonia Waiczies, Joseph Kuchling, Friedemann Paul, Georg Rose, Min‐Chi Ku, Franz Schmitt, Thoralf Niendorf   +16 more
wiley   +1 more source

Assessing robustness of quantitative susceptibility-based MRI radiomic features in patients with multiple sclerosis

Scientific Reports, 2023
Multiple Sclerosis (MS) is an autoimmune demyelinating disease characterised by changes in iron and myelin content. These biomarkers are detectable by Quantitative Susceptibility Mapping (QSM), an advanced Magnetic Resonance Imaging technique detecting ...
Cristiana Fiscone, Leonardo Rundo, Alessandra Lugaresi, David Neil Manners, Kieren Allinson, Elisa Baldin, Gianfranco Vornetti, Raffaele Lodi, Caterina Tonon, Claudia Testa, Mauro Castelli, Fulvio Zaccagna   +11 more
doaj   +1 more source

Cell Death in Neurodegenerative Diseases: Molecular Mechanisms and Therapeutic Targets

MedComm, Volume 7, Issue 9, September 2026.
Regulated cell death pathways, including apoptosis, necroptosis, pyroptosis, ferroptosis, and autophagy‐dependent cell death, interact with mitochondrial dysfunction, proteostasis failure, lysosomal stress, glial remodeling, and neuroinflammation across major neurodegenerative diseases.
Tianjiao Li, Qian Zhang, Yichen Wu, Ruixue Huang   +3 more
wiley   +1 more source

Morphology-adaptive total variation for the reconstruction of quantitative susceptibility map from the magnetic resonance imaging phase. [PDF]

PLoS ONE, 2018
Quantitative susceptibility mapping (QSM) is a magnetic resonance imaging technique that quantifies the magnetic susceptibility distribution within biological tissues.
Li Guo, Yingjie Mei, Jijing Guan, Xiangliang Tan, Yikai Xu, Wufan Chen, Qianjin Feng, Yanqiu Feng   +7 more
doaj   +1 more source

Fully‐Constrained Variable Projection for Water‐Fat Models

Magnetic Resonance in Medicine, Volume 96, Issue 3, Page 1464-1473, September 2026.
ABSTRACT Purpose Variable projection (VARPRO) is an effective technique to reduce the dimensionality of least squares optimization problems through the elimination of linear parameters. For water‐fat models, constrained VARPRO variants have been proposed in the literature to ensure that water and fat components are aligned at TE = 0, thereby preventing
Carl Ganter, Jonathan Stelter, Louis Peyratoux, Dimitrios C. Karampinos, Oliver Bieri   +4 more
wiley   +1 more source