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Hyperdense vessel sign | Radiology Reference Article - Radiopaedia.org
Jul 20, 2024 · The hyperdense vessel sign is a radiological sign appreciated on non-contrast CT brain whereby there is focal hyperattenuation (mean of approximately 55 HU) within an intracranial blood vessel 1,2. Notably, this is a distinct sign to the hypodense vessel sign.
Hyperviscosity Syndrome - StatPearls - NCBI Bookshelf
Mar 13, 2023 · HVS exists as a clinical triad of neurological symptoms, mucosal bleeding, and visual disturbances. HVS can be caused by overproduction of nearly any hematologic component but is most common with hypergammaglobulinemia. Symptoms are varied and driven by decreased blood flow through capillary beds.
Evaluation of Hyperintense Vessels on FLAIR MRI for the Diagnosis …
Jun 26, 2003 · Indeed, several groups have reported an increased intensity in cerebral blood vessels on FLAIR in the setting of acute ischemia in patients with major vessel occlusion or severe stenosis. 8,9 This so-called hyperintense vessel sign (HVS) on FLAIR MRI is thought to indicate the presence of slow flow or stasis in small arteries, veins, and ...
Hyperventilation syndrome - Wikipedia
HVS may present with chest pain and a tingling sensation in the fingertips and around the mouth (paresthesia), in some cases resulting in the hands 'locking up' or cramping (carpopedal spasm). [6] HVS may accompany a panic attack. People with …
Reversible Cerebral Vasoconstriction Syndrome | Stroke
Jul 5, 2019 · RCVS indicates reversible cerebral vasoconstriction syndrome. Open in viewer. Although outcomes in RCVS are generally favorable, complications of posterior reversible encephalopathy syndrome (PRES), seizure, hemorrhage, and brain infarction can occur.
Significance of hyperintense vessels on FLAIR MRI in acute stroke
Jul 25, 2000 · HVS on FLAIR MRI is an indicator of slow flow and early ischemia as a result of large vessel occlusion or stenosis and inadequacy of collateral circulation. HVS does not mean that infarction has occurred but indicates brain tissue at risk of infarction.
High-intensity vessel sign on fluid-attenuated inversion recovery ...
May 26, 2020 · In this manuscript from the experienced Toyama carotid group, the authors focus on the “hyperintense vessel sign” (HVS) on MRI FLAIR imaging as a potential novel diagnostic marker to identify high-risk carotid plaques and to explore possible mechanisms and clinical implications of HVS.
Hyperventilation Syndrome Clinical Presentation - Medscape
Sep 27, 2024 · Patients with acute hyperventilation syndrome (HVS) may present with agitation and anxiety. Most commonly, the history is one of sudden onset of dyspnea, chest pain, or neurologic symptoms...
High-intensity vessel sign on fluid-attenuated inversion recovery ...
HVS could be a radiological marker for high-risk carotid stenosis. Keywords: Carotid stenosis; Embolism; FLAIR; Hemodynamic; Unstable plaque. There are two possible mechanisms of HVS, hemodynamic impairment due to severe carotid stenosis and …