Results 31 to 40 of about 72,054 (257)

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

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

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

Biophysical contrast sources for magnetic susceptibility and R2* mapping: A combined 7 Tesla, mass spectrometry and electron paramagnetic resonance study

NeuroImage
Iron is the most abundant trace metal in the human brain and consistently shown elevated in prevalent neurological disorders. Because of its paramagnetism, brain iron can be assessed in vivo by quantitative MRI techniques such as R2* mapping and ...
Fábio Seiji Otsuka, Maria Concepción Garcia Otaduy, Roberta Diehl Rodriguez, Christian Langkammer, Jeam Haroldo Oliveira Barbosa, Carlos Ernesto Garrido Salmon   +5 more
doaj   +1 more source

Imaging the Centromedian Thalamic Nucleus Using Quantitative Susceptibility Mapping

Frontiers in Human Neuroscience, 2020
The centromedian (CM) nucleus is an intralaminar thalamic nucleus that is considered as a potentially effective target of deep brain stimulation (DBS) and ablative surgeries for the treatment of multiple neurological and psychiatric disorders.
Jun Li, Yufei Li, Lorenzo Gutierrez, Wenying Xu, Yiwen Wu, Chunlei Liu, Chunlei Liu, Dianyou Li, Bomin Sun, Chencheng Zhang, Hongjiang Wei   +10 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

MRI Quantification of Liver Fibrosis Using Diamagnetic Susceptibility: An Ex Vivo Validation Study

Tomography
Background/Objectives: Liver fibrosis, if left untreated, can lead to cirrhosis and cancer. The current standard liver biopsy for fibrosis staging is invasive and prone to risks of complication.
Chao Li, Jinwei Zhang, Alexey V. Dimov, Anne K. Koehne de González, Martin R. Prince, Jiahao Li, Dominick Romano, Pascal Spincemaille, Thanh D. Nguyen, Gary M. Brittenham, Yi Wang   +10 more
doaj   +1 more source

Iron deposition in Parkinson’s disease by quantitative susceptibility mapping

BMC Neuroscience, 2019
Background Patients with Parkinson’s disease (PD) have elevated levels of brain iron, especially in the nigrostriatal dopaminergic system. The purpose of this study was to evaluate the iron deposition in the substantia nigra (SN) and other deep gray ...
Qiqi Chen, Yiting Chen, Yue Zhang, Furu Wang, Hongchang Yu, Caiyuan Zhang, Zhen Jiang, Weifeng Luo   +7 more
doaj   +1 more source

Automated adaptive preconditioner for quantitative susceptibility mapping [PDF]

Magnetic Resonance in Medicine, 2019
PurposeTo develop an automated adaptive preconditioner for QSM reconstruction with improved susceptibility quantification accuracy and increased image quality.Theory and MethodsThe total field was used to rapidly produce an approximate susceptibility map, which was then averaged and trended over binning to generate a spatially varying distribution ...
Zhe Liu, Yan Wen, Pascal Spincemaille, Shun Zhang, Yihao Yao, Thanh D. Nguyen, Yi Wang   +6 more
openaire   +2 more sources

The Impact of Tenapanor on Body Composition and Blood Pressure in Peritoneal Dialysis Patients: A Pilot Study

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Instruction Tenapanor potentially affects fluid volume and blood pressure. This study explored its effects on these parameters in patients undergoing peritoneal dialysis (PD). Methods We conducted a single‐arm, prospective observational study that enrolled 10 patients on PD with hyperphosphatemia who were newly initiated on tenapanor.
Shun Yoshida, Kengo Asahina, Keiichi Osano, Natsumi Saegusa, Kohei Yamamura, Kie Ohkoshi, Miho Shikata, Toshihisa Ishii, Makiko Konishi, Kazuya Takahashi, Kohei Uchimura, Ayumu Nakashima   +11 more
wiley   +1 more source