Results 51 to 60 of about 122,361 (215)

Arterial Steal to the Penumbra Area in Patients with Acute MCA Occlusion: A Quantitative Angiographic Analysis [PDF]

open access: yesNeurointervention, 2020
Purpose In acute middle cerebral artery (MCA) occlusion, collateral vessels provide retrograde supply to the occluded territory. We hypothesized that such collateral flow reduces perfusion of the non-occluded donor region (steal effect).
René van den Berg   +7 more
doaj   +1 more source

Resolution of Occlusive Carotid Artery Thrombus Treated with Anticoagulation as Demonstrated on Duplex Ultrasonography. [PDF]

open access: yes, 2017
BACKGROUND AND PURPOSE: While the majority of cerebral ischemic events due to carotid occlusive disease result from atherosclerotic plaque rupture, intraluminal carotid artery thrombus occasionally occurs in patients without preexisting carotid ...
Liang, John W.   +2 more
core   +2 more sources

Cerebral Blood Deoxygenation by a Postural Change Detected by Near-Infrared Spectroscopy Has a Close Association with Cerebral Infarction

open access: yesBrain Sciences, 2022
Background: The recent introduction of near-infrared spectroscopy has enabled the monitoring of cerebral blood flow in real-time. Previous studies have shown that blood flow velocity is a predictor of cardiovascular disease. We hypothesized that cerebral
Hiroshi Irisawa   +3 more
doaj   +1 more source

Benefit from public unlabeled data: A Frangi filtering-based pretraining network for 3D cerebrovascular segmentation [PDF]

open access: yesarXiv, 2023
The precise cerebrovascular segmentation in time-of-flight magnetic resonance angiography (TOF-MRA) data is crucial for clinically computer-aided diagnosis. However, the sparse distribution of cerebrovascular structures in TOF-MRA results in an exceedingly high cost for manual data labeling.
arxiv  

Respiratory challenge MRI: practical aspects [PDF]

open access: yes, 2016
Respiratory challenge MRI is the modification of arterial oxygen (PaO2) and/or carbon dioxide (PaCO2) concentration to induce a change in cerebral function or metabolism which is then measured by MRI.
Dani, Krishna A.   +4 more
core   +2 more sources

Ablation of Vitamin D Signaling Compromises Cerebrovascular Adaptation to Carotid Artery Occlusion in Mice

open access: yesCells, 2020
Vitamin D insufficiency has been associated with increased incidence and severity of cerebrovascular disorders. We analyzed the impact of impaired vitamin D signaling on the anatomical and functional aspects of cerebrovascular adaptation to unilateral ...
Éva Pál   +8 more
doaj   +1 more source

Analysis of the symmetric configuration of the circle of Willis in a series of autopsied corpses [PDF]

open access: yesVojnosanitetski Pregled, 2015
Introduction. The forming of the blood vessels network configuration at the base of the brain and interconnecting of blood vessels during the embryogenesis is directly related to the phylogenetic development of the brain and brain structures.
Stojanović Nebojša   +6 more
doaj   +1 more source

Early Cerebrovascular Autoregulation in Neonates with Congenital Heart Disease

open access: yesChildren, 2022
Neonates with congenital heart disease (CHD) display delayed brain development, predisposing them to impaired cerebrovascular autoregulation (CAR) and ischemic brain injury.
Celina L. Brunsch   +4 more
doaj   +1 more source

The Relationship between Age and Affected Cerebral Vessels in Ischemic Stroke Patients

open access: yesEurasian Journal of Emergency Medicine, 2017
Aim: This study aimed to analyze the relationship between the age and the radiological findings in patients who admitted to University of Health Science Okmeydani Training and Research Hospital Emergency Department with cerebrovascular disease between ...
Mahmut Arda Çınarlık
doaj   +1 more source

Exercise Training Increases Parietal Lobe Cerebral Blood Flow in Chronic Stroke: An Observational Study

open access: yesFrontiers in Aging Neuroscience, 2017
Exercise is increasingly recommended as an essential component of stroke rehabilitation, yet uncertainty remains with respect to its direct effect on the cerebral vasculature.
Andrew D. Robertson   +11 more
doaj   +1 more source

Home - About - Disclaimer - Privacy