Results 21 to 30 of about 226,708 (241)

Rapid multi-orientation quantitative susceptibility mapping [PDF]

NeuroImage, 2016
Three-dimensional gradient echo (GRE) is the main workhorse sequence used for susceptibility weighted imaging (SWI), quantitative susceptibility mapping (QSM), and susceptibility tensor imaging (STI). Achieving optimal phase signal-to-noise ratio requires late echo times, thus necessitating a long repetition time (TR).
Bilgic, Berkin, Xie, Luke, Dibb, Russell, Langkammer, Christian, Mutluay, Aysegul, Ye, Huihui, Polimeni, Jonathan R, Augustinack, Jean, Liu, Chunlei, Wald, Lawrence L, Setsompop, Kawin   +10 more
openaire   +4 more sources

Assessing white matter microstructural changes in idiopathic normal pressure hydrocephalus using voxel-based R2* relaxometry analysis

Frontiers in Neurology, 2023
BackgroundR2* relaxometry and quantitative susceptibility mapping can be combined to distinguish between microstructural changes and iron deposition in white matter.
Yuya Kano, Yuya Kano, Yuto Uchida, Yuto Uchida, Hirohito Kan, Keita Sakurai, Susumu Kobayashi, Kento Seko, Keisuke Mizutani, Toshihiko Usami, Koji Takada, Noriyuki Matsukawa   +11 more
doaj   +1 more source

Quantitative Susceptibility Mapping in Multiple Sclerosis [PDF]

Radiology, 2013
To apply quantitative susceptibility mapping (QSM) in the basal ganglia of patients with multiple sclerosis (MS) and relate the findings to R2* mapping with regard to the sensitivity for clinical and morphologic measures of disease severity.The local ethics committee approved this study, and all subjects gave written informed consent.
Christian, Langkammer, Tian, Liu, Michael, Khalil, Christian, Enzinger, Margit, Jehna, Siegrid, Fuchs, Franz, Fazekas, Yi, Wang, Stefan, Ropele   +8 more
openaire   +2 more sources

Quantitative Susceptibility Mapping: Contrast Mechanisms and Clinical Applications. [PDF]

, 2015
Quantitative susceptibility mapping (QSM) is a recently developed MRI technique for quantifying the spatial distribution of magnetic susceptibility within biological tissues.
Cronin, Matthew, Decker, Kyle, Dibb, Russel, Gong, Nan-Jie, Liu, Chunlei, Wei, Hongjiang   +5 more
core   +2 more sources

Introduction to Quantitative Susceptibility Mapping and Susceptibility Weighted Imaging [PDF]

The British Journal of Radiology, 2019
Quantitative Susceptibility Mapping (QSM) and Susceptibility Weighted Imaging (SWI) are MRI techniques that measure and display differences in the magnetization that is induced in tissues, i.e. their magnetic susceptibility, when placed in the strong external magnetic field of an MRI system. SWI produces images in which the contrast is heavily weighted
Pascal P. R. Ruetten, Jonathan H. Gillard, Martin J. Graves   +2 more
openaire   +2 more sources

Fast quantitative susceptibility mapping with L1-regularization and automatic parameter selection [PDF]

, 2013
Purpose To enable fast reconstruction of quantitative susceptibility maps with total variation penalty and automatic regularization parameter selection.
Bianciardi, Bilgic, Chen, Deistung, Duyn, Fan, Goldstein, Haacke, Hammond, Hansen, Langkammer, Langkammer, Li, Liu, Liu, Liu, Liu, Marques, Morozov, Robinson, Rochefort, Schweser, Schweser, Schweser, Shmueli, Smith, Sun, Wharton, Wu, Wu, Xia, Xia, Zheng   +32 more
core   +1 more source

Hybrid Tau-PET/MRI study: Quantitative susceptibility mapping in progressive supranuclear palsy and its correlation with Tau-PET. [PDF]

Eur J Nucl Med Mol Imaging
Weih F, Rullmann M, Henssen D, Meyer PM, Jochimsen T, Schildan A, Rumpf JJ, Brendel M, Schroeter ML, Classen J, Barthel H, Sabri O, Tiepolt S.   +12 more
europepmc   +3 more sources

Methods for quantitative susceptibility and R2* mapping in whole post-mortem brains at 7T applied to amyotrophic lateral sclerosis

NeuroImage, 2020
Susceptibility weighted magnetic resonance imaging (MRI) is sensitive to the local concentration of iron and myelin. Here, we describe a robust image processing pipeline for quantitative susceptibility mapping (QSM) and R2* mapping of fixed post-mortem ...
Chaoyue Wang, Sean Foxley, Olaf Ansorge, Sarah Bangerter-Christensen, Mark Chiew, Anna Leonte, Ricarda AL Menke, Jeroen Mollink, Menuka Pallebage-Gamarallage, Martin R Turner, Karla L Miller, Benjamin C. Tendler   +11 more
doaj   +1 more source

The whole-brain pattern of magnetic susceptibility perturbations in Parkinson's disease [PDF]

, 2016
Although iron-mediated oxidative stress has been proposed as a potential pathomechanism in Parkinson's disease, the global distribution of iron accumulation in Parkinson's disease has not yet been elucidated.
Acosta-Cabronero, J, Betts, MJ, Butryn, M, Cardenas-Blanco, A, Galazky, I, Nestor, PJ, Valdes-Herrera, JP   +6 more
core   +1 more source

Improved Visualization of Cartilage Canals Using Quantitative Susceptibility Mapping. [PDF]

PLoS ONE, 2015
Cartilage canal vessels are critical to the normal function of epiphyseal (growth) cartilage and damage to these vessels is demonstrated or suspected in several important developmental orthopaedic diseases.
Mikko J Nissi, Ferenc Tóth, Luning Wang, Cathy S Carlson, Jutta M Ellermann   +4 more
doaj   +1 more source