Results 21 to 30 of about 931 (212)

Magnetic Susceptibility Source Separation Solely from Gradient Echo Data: Histological Validation

Tomography, 2022
Quantitative susceptibility mapping (QSM) facilitates mapping of the bulk magnetic susceptibility of tissue from the phase of complex gradient echo (GRE) MRI data.
Alexey V. Dimov, Kelly M. Gillen, Thanh D. Nguyen, Jerry Kang, Ria Sharma, David Pitt, Susan A. Gauthier, Yi Wang   +7 more
doaj   +1 more source

Thrombus magnetic susceptibility is associated with recanalization and clinical outcome in patients with ischemic stroke

NeuroImage: Clinical, 2022
In acute ischemic stroke patients with large vessel occlusion, the characteristics of the occluding thrombus on neuroimaging may be associated with recanalization after endovascular thrombectomy (EVT); however, the relationship between magnetic ...
Jie Chen, Zhe Zhang, Ximing Nie, Yuyuan Xu, Chunlei Liu, Xingquan Zhao, Zhongrong Miao, Yongjun Wang, Liping Liu   +8 more
doaj   +1 more source

Brain Nucleus Changes in Cognitive Disorders: Examining By the Quantitative Susceptibility Mapping (QSM) Technique [PDF]

Iranian Journal of Medical Physics
Introduction: Iron deposition is vital for damaging neurons and causing different cognitive disorders. Today, using the quantitative susceptibility mapping (QSM) technique, iron deposits in other brain areas can be assessed and measured. This study aimed
Farzaneh Nikparast, Ali Shoeibi, Shabnam Niroumand, Hossein Akbari-Lalimi, Hoda Zare   +4 more
doaj   +1 more source

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 of the midbrain in Parkinson's disease [PDF]

Movement Disorders, 2015
AbstractBackgroundParkinson's disease (PD) is marked pathologically by dopamine neuron loss and iron overload in the substantia nigra pars compacta. Midbrain iron content is reported to be increased in PD based on magnetic resonance imaging (MRI) R2* changes.
Guangwei, Du, Tian, Liu, Mechelle M, Lewis, Lan, Kong, Yi, Wang, James, Connor, Richard B, Mailman, Xuemei, Huang   +7 more
openaire   +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   +1 more source

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).
Berkin Bilgic, Luke Xie, Russell Dibb, Christian Langkammer, Aysegul Mutluay, Huihui Ye, Jonathan R. Polimeni, Jean Augustinack, Chunlei Liu 0004, Lawrence L. Wald, Kawin Setsompop   +10 more
openaire   +4 more sources

msQSM: Morphology-based self-supervised deep learning for quantitative susceptibility mapping

NeuroImage, 2023
Quantitative susceptibility mapping (QSM) has been applied to the measurement of iron deposition and the auxiliary diagnosis of neurodegenerative disease. There still exists a dipole inversion problem in QSM reconstruction.
Junjie He, Yunsong Peng, Bangkang Fu, Yuemin Zhu, Lihui Wang, Rongpin Wang   +5 more
doaj   +1 more source

Rapid automated liver quantitative susceptibility mapping [PDF]

Journal of Magnetic Resonance Imaging, 2019
BackgroundAccurate measurement of the liver iron concentration (LIC) is needed to guide iron‐chelating therapy for patients with transfusional iron overload. In this work, we investigate the feasibility of automated quantitative susceptibility mapping (QSM) to measure the LIC.PurposeTo develop a rapid, robust, and automated liver QSM for clinical ...
Ramin Jafari, Sujit Sheth, Pascal Spincemaille, Thanh D. Nguyen, Martin R. Prince, Yan Wen, Yihao Guo, Kofi Deh, Zhe Liu, Daniel Margolis, Gary M. Brittenham, Andrea S. Kierans, Yi Wang   +12 more
openaire   +2 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