Results 91 to 100 of about 72,296 (243)

Peristaltic pumping in sub-wavelength channels [PDF]

arXiv, 2020
We apply the lubrication approximation to solve for the flow generated by a peristaltic traveling wave in a finite, planar channel, and examine the effect of channel length. Cerebrospinal fluid (CSF) is hypothesized to be peristaltically transported by arterial pulsations through the perivascular spaces in the brain.
arxiv  

Generative adversarial network for segmentation of motion affected neonatal brain MRI [PDF]

arXiv, 2019
Automatic neonatal brain tissue segmentation in preterm born infants is a prerequisite for evaluation of brain development. However, automatic segmentation is often hampered by motion artifacts caused by infant head movements during image acquisition.
arxiv  

Effect of cerebrospinal fluid shunts on intracranial pressure and on cerebrospinal fluid dynamics: 2. A new technique of pressure measurements: results and concepts 3.A concept of hydrocephalus [PDF]

, 1973
J. L. Fox, David C. McCullough, R. C. Green   +2 more
openalex   +1 more source

Remote Cerebellar Hemorrhage Following Lumboperitoneal Shunt Insertion: A Rare Case Report

The Surgery Journal, 2016
Idiopathic intracranial hypertension is characterized by high intracranial pressure without hydrocephalus or intracranial mass. Surgical treatment includes optic nerve fenestration and insertion of ventriculoperitoneal and lumboperitoneal (LP) shunts ...
Fatih Ayvalık, Rafet Ozay, Erhan Turkoglu, Mehmet Serdar Balkan, Zeki Şekerci   +4 more
doaj   +1 more source

Machine Learning Classification of Alzheimer's Disease Stages Using Cerebrospinal Fluid Biomarkers Alone [PDF]

arXiv
Early diagnosis of Alzheimer's disease is a challenge because the existing methodologies do not identify the patients in their preclinical stage, which can last up to a decade prior to the onset of clinical symptoms. Several research studies demonstrate the potential of cerebrospinal fluid biomarkers, amyloid beta 1-42, T-tau, and P-tau, in early ...
arxiv  

Automatic brain tissue segmentation in fetal MRI using convolutional neural networks [PDF]

arXiv, 2019
MR images of fetuses allow clinicians to detect brain abnormalities in an early stage of development. The cornerstone of volumetric and morphologic analysis in fetal MRI is segmentation of the fetal brain into different tissue classes. Manual segmentation is cumbersome and time consuming, hence automatic segmentation could substantially simplify the ...
arxiv  

New Introducer for Subcutaneous Placement of Cerebrospinal Fluid Shunts: Technical Note [PDF]

, 1979
Chris Ekong, Youssef H. Gabriel
openalex   +1 more source

Multi-scale simulation of red blood cell trauma in large-scale high-shear flows after Norwood operation [PDF]

arXiv
Cardiovascular surgeries and mechanical circulatory support devices create non-physiological blood flow conditions that can be detrimental, especially for pediatric patients. A source of complications is mechanical red blood cell (RBC) damage induced by the localized supraphysiological shear fields.
arxiv  

The Use of Shunting Devices for Cerebrospinal Fluid in Canada [PDF]

, 1986
Harold J. Hoffman, May S. M. Smith
openalex   +1 more source

Low Reynolds number pumping near an elastic half space [PDF]

arXiv
Previous studies on peristalsis, the pumping of fluid along a channel by wave-like displacements of the channel walls, have shown that the elastic properties of the channel and the peristaltic wave shape can influence the flow rate. Motivated by the oscillatory flow of cerebrospinal fluid along compliant perivascular spaces, we consider a prescribed ...
arxiv