Results 51 to 60 of about 5,273,568 (326)

A critical guide to the automated quantification of perivascular spaces in magnetic resonance imaging

Frontiers in Neuroscience, 2022
The glymphatic system is responsible for waste clearance in the brain. It is comprised of perivascular spaces (PVS) that surround penetrating blood vessels.
W. Pham, Miranda L Lynch, Gershon Spitz, Terence O’Brien, L. Vivash, B. Sinclair, M. Law   +6 more
semanticscholar   +1 more source

Enlarged perivascular spaces and cerebral small vessel disease [PDF]

, 2013
Background and aimsEnlarged perivascular spaces (also known as Virchow-Robin spaces) on T2-weighted brain magnetic resonance imaging are common, but their etiology, and specificity to small vessel as opposed to general cerebrovascular disease or ageing ...
Dennis, Martin S., Potter, Gillian M, Doubal, Fergus N, Doubal, Fergus N., Potter, Gillian M., Sudlow, Cathie L., Dennis, Martin S, Wardlaw, Joanna M, Jackson, Caroline A., Chappell, Francesca M, Chappell, Francesca M., Sudlow, Catherine; id_orcid, Jackson, Caroline; id_orcid, Wardlaw, Joanna M.   +13 more
core   +1 more source

Geometrically Reduced Modelling of Pulsatile Flow in Perivascular Networks

Frontiers in Physics, 2022
Flow of cerebrospinal fluid in perivascular spaces is a key mechanism underlying brain transport and clearance. In this paper, we present a mathematical and numerical formalism for reduced models of pulsatile viscous fluid flow in networks of generalized
Cécile Daversin-Catty , Ingeborg G. Gjerde , Marie E. Rognes , Marie E. Rognes    +3 more
doaj   +1 more source

Physiology and Clinical Relevance of Enlarged Perivascular Spaces in the Aging Brain

Neurology, 2021
Perivascular spaces (PVS) are fluid-filled compartments that are part of the cerebral blood vessel wall and represent the conduit for fluid transport in and out of the brain.
Corey W. Bown, R. Carare, M. Schrag, A. Jefferson   +3 more
semanticscholar   +1 more source

Automated Methods for Detecting and Quantitation of Enlarged Perivascular spaces on MRI

Journal of Magnetic Resonance Imaging, 2022
The brain's glymphatic system is a network of intracerebral vessels that function to remove “waste products” such as degraded proteins from the brain. It comprises of the vasculature, perivascular spaces (PVS), and astrocytes.
Jasmine Moses, B. Sinclair, M. Law, T. O’Brien, L. Vivash   +4 more
semanticscholar   +1 more source

MRI-Visible Perivascular Spaces and Risk of Incident Dementia

Neurology, 2022
Background and Objectives Perivascular spaces (PVS) visible on MRI scans may represent key aspects in the pathophysiology of stroke and dementia, including cerebral small vessel disease and glymphatic dysfunction.
J. Romero, A. Pinheiro, Hugo J. Aparicio, C. Decarli, S. Demissie, S. Seshadri   +5 more
semanticscholar   +1 more source

Evaluation of Glymphatic System Using Diffusion MR Technique in T2DM Cases

Frontiers in Human Neuroscience, 2020
Objective: We aimed to evaluate the activity of the human glymphatic system in type 2 diabetes mellitus (T2DM) using diffusion tensor image analysis along with the perivascular space (DTI-ALPS).Methods: Diffusion tensor images were acquired to calculate ...
Guangwei Yang, Nan Deng, Yi Liu, Yingjiang Gu, Xiang Yao   +4 more
doaj   +1 more source

Perivascular space and neurological disorders [PDF]

Neuroscience Bulletin, 2009
Perivascular space (PVS) is a crevice between two slices of cerebral pia maters, filled with tissue fluid, which be formed by pia mater emboling in the surrounding of cerebral perforating branch (excluding micrangium). Normal PVS (diameter < 2 mm) can be found in almost all healthy adults; however enlarged PVS (diameter > 2 mm) has correlation with ...
openaire   +2 more sources

Aging, prevalence and risk factors of MRI-visible enlarged perivascular spaces

Aging, 2022
Background and purpose: Cerebral small vessel disease (CSVD) increases with age and is associated with stroke and cognitive decline. Enlarged Perivascular Spaces (ePVS) is an emerging marker of CSVD, but its prevalence over the life span remain unclear ...
F. R. Lara, A. Scruton, A. Pinheiro, S. Demissie, Pedram Parva, A. Charidimou, M. Francis, J. Himali, C. Decarli, A. Beiser, S. Seshadri, J. Romero   +11 more
semanticscholar   +1 more source

Link between Mild Traumatic Brain Injury, Poor Sleep, and Magnetic Resonance Imaging: Visible Perivascular Spaces in Veterans

Journal of Neurotrauma, 2021
Impaired clearance of perivascular waste in the brain may play a critical role in morbidity after mild traumatic brain injury (mTBI). We aimed to determine the effect of mTBI on the burden of magnetic resonance imaging (MRI)-visible perivascular spaces ...
J. Piantino, D. Schwartz, M. Luther, C. Newgard, L. Silbert, Murray M. Raskind, K. Pagulayan, N. Kleinhans, Jeffrey J. Iliff, E. Peskind   +9 more
semanticscholar   +1 more source