Zobrazeno 1 - 10
of 90
pro vyhledávání: '"cerebrovascular reactivity (CVR)"'
Autor:
Kevin P. Decker, Faria Sanjana, Nick Rizzi, Mary K. Kramer, Alexander M. Cerjanic, Curtis L. Johnson, Christopher R. Martens
Publikováno v:
Frontiers in Physiology, Vol 15 (2024)
ObjectivesTo assess the reliability and validity of measuring resting cerebral blood flow (CBF) and hippocampal CBF using a single-post-labeling delay (PLD) and a multi-PLD pseudo-continuous arterial spin labeling (pCASL) protocol for cerebrovascular
Externí odkaz:
https://doaj.org/article/e8a2f63106b04f72a6fff664a42d3606
Publikováno v:
Frontiers in Neuroimaging, Vol 2 (2023)
Cerebrovascular reactivity (CVR) is typically assessed with a carbon dioxide (CO2) stimulus combined with BOLD fMRI. Recently, resting-state (RS) BOLD fMRI has been shown capable of generating CVR maps, providing a potential for broader CVR applicati
Externí odkaz:
https://doaj.org/article/38d5c9be4f534591863ea81e2f51cc8e
Autor:
Chau Vu, Botian Xu, Clio González-Zacarías, Jian Shen, Koen P. A. Baas, Soyoung Choi, Aart J. Nederveen, John C. Wood
Publikováno v:
Frontiers in Physiology, Vol 14 (2023)
Introduction: Deoxygenation-based dynamic susceptibility contrast (dDSC) has previously leveraged respiratory challenges to modulate blood oxygen content as an endogenous source of contrast alternative to gadolinium injection in perfusion-weighted MR
Externí odkaz:
https://doaj.org/article/758db1b668e54658aedb0bedbff6c9ac
Publikováno v:
NeuroImage, Vol 265, Iss , Pp 119758- (2023)
Conventionally, cerebrovascular reactivity (CVR) is estimated as the amplitude of the hemodynamic response to vascular stimuli, most commonly carbon dioxide (CO2). While the CVR amplitude has established clinical utility, the temporal characteristics
Externí odkaz:
https://doaj.org/article/a78ad4a16ca04ef0975be73edcb2e4e6
Autor:
Lidia Glodzik, Henry Rusinek, Tracy Butler, Yi Li, Pippa Storey, Elizabeth Sweeney, Ricardo S. Osorio, Adrienne Biskaduros, Emily Tanzi, Patrick Harvey, Christopher Woldstad, Thomas Maloney, Mony J. de Leon
Publikováno v:
Frontiers in Aging Neuroscience, Vol 14 (2022)
Background and objectivesObesity is a risk factor for cognitive decline. Probable mechanisms involve inflammation and cerebrovascular dysfunction, leading to diminished cerebral blood flow (CBF) and cerebrovascular reactivity (CVR). The hippocampus,
Externí odkaz:
https://doaj.org/article/c11df536177442758cfaaaa3f486fa43
Autor:
Yashesh Dasari, James Duffin, Ece Su Sayin, Harrison T. Levine, Julien Poublanc, Andrea E. Para, David J. Mikulis, Joseph A. Fisher, Olivia Sobczyk, Mir Behrad Khamesee
Publikováno v:
Healthcare, Vol 11, Iss 16, p 2231 (2023)
Cerebrovascular Reactivity (CVR) is a provocative test used with Blood oxygenation level-dependent (BOLD) Magnetic Resonance Imaging (MRI) studies, where a vasoactive stimulus is applied and the corresponding changes in the cerebral blood flow (CBF)
Externí odkaz:
https://doaj.org/article/3bf494d5c4d945f4914ba3d42a516cf0
Autor:
Stéphanie Forté, Olivia Sobczyk, Julien Poublanc, James Duffin, Gregory M. T. Hare, Joseph Arnold Fisher, David Mikulis, Kevin H. M. Kuo
Publikováno v:
Frontiers in Physiology, Vol 13 (2022)
Background: Despite increased cerebral blood flow (CBF), cerebral infarcts occur in patients with sickle cell disease (SCD). This suggests increased CBF does not meet metabolic demand possibly due to compromised cerebral vasodilatory response. Hypoth
Externí odkaz:
https://doaj.org/article/bb7c254fe64c4caba2516b42041575b1
Publikováno v:
Frontiers in Neurology, Vol 13 (2022)
The inflammatory processes observed in the central nervous system in multiple sclerosis (MS) could damage the endothelium of the cerebral vessels and lead to a dysfunctional regulation of vessel tonus and recruitment, potentially impairing cerebrovas
Externí odkaz:
https://doaj.org/article/bb9dcd30095b478182a707bbd0739262
Autor:
Ece Su Sayin, Olivia Sobczyk, Julien Poublanc, David J. Mikulis, Joseph A. Fisher, Kevin H. M. Kuo, James Duffin
Publikováno v:
Frontiers in Physiology, Vol 13 (2022)
In patients with sickle cell disease (SCD) the delivery of oxygen to the brain is compromised by anemia, abnormal rheology, and steno-occlusive vascular disease. Meeting demands for oxygen delivery requires compensatory features of brain perfusion. T
Externí odkaz:
https://doaj.org/article/461cb4c9f69f425dacff27abf7daba42
Publikováno v:
Frontiers in Aging Neuroscience, Vol 13 (2021)
Objectives: Endothelial dysfunction (ED) has been linked to the pathogenesis of cerebral small vessel disease (SVD). We aimed to assess ED and cerebrovascular reactivity (CVR) in the patients with a diverse manifestation of SVD, with similar and exte
Externí odkaz:
https://doaj.org/article/644068d961cf4566a623f4cdfc59347d