Regional cerebral blood flow
Voxel-based assessment of spinal tap test-induced regional cerebral blood flow changes in normal pressure hydrocephalus
... Decreased cerebral perfusion probably participates in the pathophysiological mechanisms leading to this ...decreased regional cerebral blood flow (rCBF) in NPH include stretching and ...
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Regional cerebral blood flow during wakeful rest in older subjects with mild to severe obstructive sleep apnea
... in regional brain perfusion are highly inconsistent, 86 a study performed in older subjects showed that females have reduced rCBF in regions that were reported as hypoperfused in our study, including parietal ...
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Time-of-day modulations of regional cerebral blood flow response in functional brain imaging studies : a meta-analysis
... Results & Discussion: Regional CBF is positively correlated with time of day in a large set of brain areas. Those areas in which activity increased along the day were thalamus and hypothalamus including the ...
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Obstructive sleep apnea during REM sleep and daytime cerebral functioning : a regional cerebral blood flow study using high-resolution SPECT
... daytime cerebral functioning During REM sleep, upper airway muscle activity is reduced and their collapsibility increases, 10, 18, 34 which may lead to more apneas and hypopneas during REM sleep, even in milder ...
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Regional cerebral glucose metabolism in akinetic catatonia and after remission
... 4 Northoff G, Steinke R, Nagel DC, et al. Right lower prefronto-parietal cortical dysfunction in akinetic catatonia: a combined study of neuropsychology and regional cerebral blood flow. ...
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Does the Direction of Ductal Blood Flow Affect Regional Circulatory Hemodynamics in Duct Dependent Congenital Heart Disease?
... Doppler blood flow velocity measurements from the anterior cerebral (ACA), celiac (CA) and superior mesenteric (SMA) arteries were performed on stable newborn infants with HLHS and ...each ...
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Changes in cerebral blood flow and vasoreactivity to CO(2) measured by Arterial Spin Labeling after 6 days at 4,350 m.
... the regional changes in CBF and CVR induced by a prolonged stay at high altitude and the relative impact of reduced PaO 2 and PaCO 2 on cerebral ...as cerebral autoregulation, neuronal and ...
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A New Computational Model for Neuro-Glio-Vascular Coupling: Astrocyte Activation Can Explain Cerebral Blood Flow Nonlinear Response to Interictal Events
... between cerebral blood flow (CBF) response and neuronal activity is of significant importance because CBF increase is essen- tial to the health of neurons, for instance through oxygen ...of ...
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The effect of changing arterial blood pressure and carbon dioxide on cerebral blood flow.
... measure regional CBF and oxygen metabolism in man using positron emission tomography (PET), it was shown that in a subset of patients with repeated TIAs affecting the territory of an occluded or severely stenotic ...
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Regional cerebral glucose metabolism in epilepsies with continuous spikes and waves during sleep
... hypermetabolic cerebral area and corticosteroid treatment before ...on cerebral glucose metabolism needs to be ...global cerebral glucose metabolism and cerebral blood flow and ...
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On the normalization of cerebral blood flow
... the blood pressure and flow distribution depends on the considered blood rheological model; we already analyzed this issue in a recent ...total blood perfusion flux Q in a given voxel is directly ...
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Changes in regional cerebral perfusion over time in idiopathic REM sleep behavior disorder
... half-maximum filter and proportionally scaled for individ- ual global mean signal, a method limiting intersubject vari- ability in radiotracer uptake previously used by others in iRBD populations. 6,8,10 Therefore, rCBF ...
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Blood pressure and cerebral white matter share common genetic factors in Mexican Americans.
... and blood pressure (BP) can lead to atrophy of cerebral white matter (WM), potentially attributable to shared genetic ...and regional genetic overlap between BP and fractional anisotropy were ...
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Blood flow simulation and magnetohydrodynamics effects in MRI
... Some MHD effects of the magnetic field on blood flows were already discussed in the liter- ature in a stationary case in a 2D configuration. We believe that the geometry and the time dependence may affect significantly ...
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High speed optical holography of retinal blood flow
... Assessing blood perfusion indicators from the first moments of the power spectrum distribu- tion S of the detector signal is commonplace for laser Doppler sensors [28, 29]; here we formed the three first moments ...
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Holographic laser Doppler imaging of pulsatile blood flow
... by blood flow using heterodyne holographic interferometry on the thumb of a healthy volunteer, in ...to blood pulse monitored by plethysmoraphy during an occlusion-reperfusion ...
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Holographic laser Doppler imaging of microvascular blood flow
... of blood flow from optically- acquired Doppler maps; we make use of elementary re- sults from the diffusing-wave spectroscopy formalism [90] in backscattering configuration in order to retrieve local root ...
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Optic-nerve-head blood-flow response to increase in arterial blood pressure in humans
... A monitor with a pneumatic transcutaneous sensor Nexfin™ (Bmeye, Amsterdam, The Netherlands) provided continuous systolic, diastolic, and mean blood pressure measurements. [25] The IOP of the fellow eye was ...
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Whole blood mRNA levels of S1PR4 associated with cerebral vasospasm after subarachnoid hemorrhage
... and profiled for mRNA whole blood level, this study suffers from several limitations. Its low sample size likely hampered our chance to detect study-wise statistical associations and decreased the general power of ...
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A "well-balanced" finite volume scheme for blood flow simulation
... for blood flow in arteries was written long time ago by Leonhard Euler in ...wave flow has been understood and is explained in classical books such as Lighthill [ 50 ] and Pedley [ 65 ...
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