Results 121 to 130 of about 66,223 (392)

Additional Role of 3D ASL Perfusion in Skull Base Lesions

Indian Journal of Radiology and Imaging
Background Arterial spin labeling (ASL) perfusion imaging is widely used since its main advantage is that no intravenous contrast is needed.
J. Fairoze Naghath, S. Babu Peter
doaj   +1 more source

Inhibition of SLC11A1‐Mediated Lysosomal Iron Accumulation in Microglia Promotes Repair Following White Matter Stroke

Advanced Science, EarlyView.
Genetic and pharmacological inhibition of SLC11A1 functioning as an H+/Fe2+ antiporter–mediated lysosomal iron accumulation in microglia promotes lysosomal lumen acidification, increases CTSD expression, enhances lysosomal myelin debris uptake and degradation, and promotes repair following white matter stroke. ABSTRACT White matter stroke (WMS) results
Lingling Qiu, Yajie Zhang, Yushi Tang, Hongli Hu, Ying Zhang, Junwen Xue, Hao Wang, Yecheng Wang, Chunfeng Liu, Jia Jia, Jian Cheng, Yongjun Cao   +11 more
wiley   +1 more source

Calibration of arterial spin labeling data—potential pitfalls in post‐processing

Magnetic Resonance in Medicine, 2019
To assess the impact of the different post‐processing options in the calibration of arterial spin labeling (ASL) data on perfusion quantification and its reproducibility.
J. Pinto, M. Chappell, T. Okell, Melvin Mezue, A. Segerdahl, I. Tracey, P. Vilela, P. Figueiredo   +7 more
semanticscholar   +1 more source

Effects of Acquisition Parameter Modifications and Field Strength on the Reproducibility of Brain Perfusion Measurements Using Arterial Spin-Labeling

American Journal of Neuroradiology, 2020
BACKGROUND AND PURPOSE: Although the added diagnostic value of arterial spin-labeling is shown in various cerebral pathologies, its use in clinical practice is limited.
K.P.A. Baas, J. Petr, J. Petr, J. Kuijer, A. Nederveen, H. Mutsaerts, H. Mutsaerts, K.C.C. van de Ven   +7 more
semanticscholar   +1 more source

Quantifying myocardial perfusion during MR-guided interventions without exogenous contrast agents: intra-arterial spin labeling

Zeitschrift für Medizinische Physik
Purpose: To test intra-arterial spin labeling (iASL) using active guiding catheters for myocardial perfusion measurements during magnetic resonance (MR)-guided interventions in a pig study. Methods: In this work, a single-loop radiofrequency (RF) coil at
Simon Reiss, Kevin Wäscher, Ali Caglar Özen, Thomas Lottner, Timo Heidt, Constantin von zur Mühlen, Michael Bock   +6 more
doaj   +1 more source

Perfusion magnetic resonance imaging provides additional information as compared to anatomical imaging for decision-making in vestibular schwannoma

European Journal of Radiology Open, 2016
Objective: The added value of perfusion MRI for decision-making in vestibular schwannoma (VS) patients is unknown. MRI offers two perfusion methods: the first employing contrast agent (dynamic susceptibility contrast (DSC)-MRI) that provides information ...
M.C. Kleijwegt, A.G.L. van der Mey, F.T. Wiggers-deBruine, M.J.A Malessy, M.J.P. van Osch   +4 more
doaj   +1 more source

Continuous ASL perfusion fMRI investigation of higher cognition: Quantification of tonic CBF changes during sustained attention and working memory tasks [PDF]

, 2005
Arterial spin labeling (ASL) perfusion fMRI is an emerging method in clinical neuroimaging. Its non-invasiveness, absence of low frequency noise, and ability to quantify the absolute level of cerebral blood flow (CBF) make the method ideal for ...
Detre, John A., Kim, Junghoon, Rao, Hengyi, Tang, Kathy Z., Wang, Jiongjiong, Whyte, John   +5 more
core   +2 more sources

Measuring the labeling efficiency of pseudocontinuous arterial spin labeling

Magnetic Resonance in Medicine, 2016
PurposeOptimization and validation of a sequence for measuring the labeling efficiency of pseudocontinuous arterial spin labeling (pCASL) perfusion MRI.MethodsThe proposed sequence consists of a labeling module and a single slice Look‐Locker echo planar imaging readout.
Chen, Z.S., Zhang, X.X., Yuan, C., Zhao, X.H., Osch, M.J.P. van   +4 more
openaire   +3 more sources

Microglial Fkbp5 Impairs Post‐Stroke Vascular Integrity and Regeneration by Promoting Yap1‐Mediated Glycolysis and Oxidative Phosphorylation

Advanced Science, EarlyView.
A post‐stroke perivascular niche of microglia characterized by low expression of M2 markers and elevated glycolysis, oxidative phosphorylation (OXPHOS), and phagocytic activity is identified, which is termed stroke‐activated vascular‐associated microglia (stroke‐VAM).
Yanan Li, Yanmei Qiu, Yunlei Yang, Yanhao Wei, Haokun Peng, Longhai Zeng, Pengcheng Li, Rentang Bi, Bo Hu   +8 more
wiley   +1 more source

Magnetic resonance imaging of cerebral blood flow in animal stroke models

Brain Circulation, 2016
Perfusion could provide useful information on the metabolic status and functional status of tissues and organs. This review summarizes the most commonly used perfusion measurement methods: Dynamic susceptibility contrast (DSC) and arterial spin labeling (
Qiang Shen, Timothy Q Duong
doaj   +1 more source