Results 81 to 90 of about 501,855 (424)

Computational Fluid Dynamic Simulations In a Model of a Carotid Bifurcation Under Steady Flow Conditions [PDF]

open access: yesarXiv, 2020
Strokes are still one of the leading causes for death after heart diseases and cancer in all over the world. Most strokes happen because an artery that carries blood uphill from the heart to the head gets clogged. Most of the time, as with heart attacks, the problem is atherosclerosis, hardening of the arteries, calcified buildup of fatty deposits on ...
arxiv  

Pituitary apoplexy causing internal carotid artery occlusion--case report.

open access: yesNeurologia medico-chirurgica, 2011
A 50-year-old man presented with pituitary apoplexy resulting in internal carotid artery occlusion manifesting as sudden onset of severe headache, right ptosis, and left hemiparesis, associated with visual impairment. Computed tomography showed a nodular
I. Chokyu   +5 more
semanticscholar   +1 more source

Artesunate Inhibits Neointimal Hyperplasia by Promoting IRF4 Associated Macrophage Polarization

open access: yesAdvanced Science, EarlyView.
This study shows that macrophage interferon regulatory factor 4 (IRF4) improved arterial injury‐induced neointimal hyperplasia by promoting of M2 polarization via up‐regulating krüppel‐like factor 4 (KLF4) in rodent and nonhuman primate models. Notably, artesunate is identified as a potent inducer of IRF4 in macrophages, and proposed as a promising ...
Jinlin Miao   +15 more
wiley   +1 more source

Comparison of 2D and 4D Flow MRI in Neonates Without General Anesthesia

open access: yesJournal of Magnetic Resonance Imaging, Volume 57, Issue 1, Page 71-82, January 2023., 2023
Background Neonates with critical congenital heart disease require early intervention. Four‐dimensional (4D) flow may facilitate surgical planning and improve outcome, but accuracy and precision in neonates are unknown. Purpose To 1) validate two‐dimensional (2D) and 4D flow MRI in a phantom and investigate the effect of spatial and temporal resolution;
Pia Sjöberg   +7 more
wiley   +1 more source

Giant cell arteritis as a cause of extracranial internal carotid artery aneurysm: a case report

open access: yesJournal of Medical Case Reports
Background This report presents the management of patient with extracranial internal carotid artery pseudoaneurysm due to giant cell arteritis. Case presentation Left internal carotid artery pseudoaneurysm was diagnosed in a 57-year-old Ukrainian woman ...
Ihor Kobza, Yuliia Mota, Volodymyr Vovk
doaj   +1 more source

Automatic Diagnosis of Carotid Atherosclerosis Using a Portable Freehand 3D Ultrasound Imaging System [PDF]

open access: yesarXiv, 2023
The objective of this study is to develop a deep-learning based detection and diagnosis technique for carotid atherosclerosis using a portable freehand 3D ultrasound (US) imaging system. A total of 127 3D carotid artery scans were acquired using a portable 3D US system which consisted of a handheld US scanner and an electromagnetic tracking system. A U-
arxiv  

Computational hemodynamics in arteries with the one-dimensional augmented fluid-structure interaction system: viscoelastic parameters estimation and comparison with in-vivo data [PDF]

open access: yesJ. Biomech. 100 (2020) 109595, 2019
Mathematical models are widely recognized as a valuable tool for cardiovascular diagnosis and the study of circulatory diseases, especially to obtain data that require otherwise invasive measurements. To correctly simulate body hemodynamics, the viscoelastic properties of vessel walls are a key aspect to be taken into account as they play an essential ...
arxiv   +1 more source

Anomalous External Carotid Artery-Internal Carotid Artery Anastomosis in Two Patients with Proximal Internal Carotid Arterial Remnants [PDF]

open access: yesKorean Journal of Radiology, 2015
Two angiographic instances of anomalous external carotid artery (ECA) and internal carotid artery (ICA) anastomosis are described, each occurring at the C2-3 level and bearing remnants of proximal ICA. The ICA remnant of one patient (identifiable immediately upon bifurcation of the common carotid artery) was hypoplastic, and that of the other patient ...
Chang Hun Kim   +6 more
openaire   +3 more sources

In Vivo Wall Shear Stress Distribution in the Carotid Artery: Effect of Bifurcation Geometry, Internal Carotid Artery Stenosis, and Recanalization Therapy

open access: yesCirculation Cardiovascular Imaging, 2010
Background—The purpose of this study was to analyze the in vivo distribution of absolute wall shear stress (WSSabs) and oscillatory shear index (OSI) in the carotid bifurcation and to evaluate its dependence on bifurcation geometry, the presence of ...
M. Markl   +8 more
semanticscholar   +1 more source

Cerebral vasomotor reactivity predicts the development of acute stroke in patients with internal carotid artery stenosis [PDF]

open access: yes, 1970
Objective To investigate the relationship between cerebral vasomotor reactivity (VMR) and acute stroke in patients with internal carotid artery stenosis. Methods 54 patients with internal carotid artery stenosis were enrolled.
Cao, Hua   +5 more
core   +2 more sources

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