Results 21 to 30 of about 5,273,568 (326)

Giant Tumefactive Perivascular Spaces with Obstructive Hydrocephalus: A Case Report [PDF]

, 2023
The perivascular space is a normal anatomical structure that forms around perforating arteries and is filled with cerebrospinal fluid. In rare cases, the perivascular space is enlarged and form multiocular cysts measuring 1.5 cm or larger, which are ...
Akutsu, Hiroyoshi, Matsuda, Hadzki, Yamada, Nobuhiro, Sumi, Takuma, Uzuka, Takeo   +4 more
core   +3 more sources

Cognitive impairment due to widespread enlarged perivascular spaces

Radiology Case Reports, 2021
Perivascular spaces, also known as Virchow-Robin spaces, are usually considered as a normal, asymptomatic finding. However, this finding can occasionally demonstrate an atypical appearance and can be symptomatic. We report herein a rare case of cognitive
Yoshitaka Yamaguchi, MDPhD, Manabu Wada, MDPhD, Luna Kimihira, MDPhD, Hikaru Nagasawa, MDPhD   +3 more
doaj   +1 more source

Impaired glymphatic system as evidenced by low diffusivity along perivascular spaces is associated with cerebral small vessel disease: a population-based study

Stroke and vascular neurology, 2023
Objective This study aims to investigate the associations of glymphatic system with the presence, severity and neuroimaging phenotypes of cerebral small vessel disease (CSVD) in a community-based population.
Yunjiao Tian, Xueli Cai, Yijun Zhou, A. Jin, Suying Wang, Yingying Yang, Lerong Mei, J. Jing, Shan Li, Xia Meng, Tiemin Wei, Tao Liu, Yongjun Wang, Yuesong Pan, Yilong Wang   +14 more
semanticscholar   +1 more source

Glymphatic clearance estimated using diffusion tensor imaging along perivascular spaces is reduced after traumatic brain injury and correlates with plasma neurofilament light, a biomarker of injury severity

Brain Communications, 2023
The glymphatic system is a perivascular fluid clearance system, most active during sleep, considered important for clearing the brain of waste products and toxins.
T. Butler, Liangdong Zhou, I. Ozsahin, X. Wang, J. Garetti, H. Zetterberg, K. Blennow, K. Jamison, M. D. de Leon, Yi Li, Amy Kuceyeski, Sudhin A Shah   +11 more
semanticscholar   +1 more source

Blood–Brain Barrier Disruption and Perivascular Spaces in Small Vessel Disease and Neurodegenerative Diseases: A Review on MRI Methods and Insights

Journal of Magnetic Resonance Imaging, 2023
Perivascular spaces (PVS) and blood–brain barrier (BBB) disruption are two key features of cerebral small vessel disease (cSVD) and neurodegenerative diseases that have been linked to cognitive impairment and are involved in the cerebral waste clearance ...
P. Voorter, Maud van Dinther, Willemijn J. Jansen, A. Postma, J. Staals, J. Jansen, R. V. van Oostenbrugge, Merel M. van der Thiel, Walter H. Backes   +8 more
semanticscholar   +1 more source

Spontaneous regression of asymptomatic tumefactive perivascular spaces in the anterior temporal lobe [PDF]

, 2022
Perivascular spaces are fluid-filled spaces that surround the perforating vessels of the brain and are normal findings on brain imaging. These are usually asymptomatic and are considered a manifestation of aging.
Nagashima, Yoshitaka, Nishimura, Yusuke, Taoka, Toshiaki, Hashida, Miki, Kawai, Hisashi, Eguchi, Kaoru, Saito, Ryuta   +6 more
core   +1 more source

Giant Tumefactive Perivascular Space: Advanced Fusion MR Imaging and Tractography Study—A Case Report and a Systematic Review

Diagnostics, 2023
Perivascular spaces (PVSs) are small extensions of the subpial cerebrospinal space, pial-lined and interstitial fluid-filled. They surround small penetrating arteries, and veins, crossing the subarachnoid space to the brain tissue.
Renata Conforti, Raffaella Capasso, Donatella Franco, Carmela Russo, Fabio Oreste Rinaldi, Giovanna Pezzullo, Simone Coluccino, Maria Chiara Brunese, Corrado Caiazzo, Ferdinando Caranci, Fabio Tortora   +10 more
doaj   +1 more source

Enlarged perivascular spaces in patients with migraine: a case–control study based on 3T MRI

Annals of Clinical and Translational Neurology, 2023
To explore whether MRI‐visible enlarged perivascular spaces (EPVS) are associated with migraine and may serve as a predictor of migraine. Then further explore its correlation with migraine chronification.
Ziyu Yuan, Wei Li, Hefei Tang, Yanliang Mei, Dong Qiu, Min Zhang, Qian Sun, Wen Wang, P. Zhang, Zhao Ma, Xueyan Zhang, Yaqing Zhang, Yonggang Wang, Xueying Yu   +13 more
semanticscholar   +1 more source

Brain solute transport is more rapid in periarterial than perivenous spaces

Scientific Reports, 2021
Fluid flow in perivascular spaces is recognized as a key component underlying brain transport and clearance. An important open question is how and to what extent differences in vessel type or geometry affect perivascular fluid flow and transport.
Vegard Vinje, Erik N. T. P. Bakker, Marie E. Rognes   +2 more
doaj   +1 more source

Weakly supervised perivascular spaces segmentation with salient guidance of frangi filter

Magnetic Resonance in Medicine, 2023
To develop a weakly supervised 3D perivascular spaces (PVS) segmentation model that combines the filter‐based image processing algorithm and the convolutional neural network.
Haoyu Lan, Kirsten M. Lynch, Rachel M. Custer, Nien-Chu Shih, Patrick Sherlock, A. Toga, F. Sepehrband, J. Choupan   +7 more
semanticscholar   +1 more source