Results 361 to 370 of about 1,364,033 (418)

Cerebral blood flow velocity in preterm neonates

Brain and Development, 1985
The postnatal changes of cerebral blood flow velocity in 35 preterm neonates with or without complications were measured with a bidirectional Doppler flow meter. In the cases without complications, the pulsatility index for the anterior cerebral artery (ACA-PI) was high shortly after birth, and gradually decreased after 6 hrs as that in normal term ...
Sachio Takashima, Yukinori Ando, Kenzo Takeshita   +2 more
openaire   +3 more sources

Retinal blood flow velocity in metabolic syndrome

Graefe's Archive for Clinical and Experimental Ophthalmology, 2013
Metabolic syndrome (MetS) is characterized by obesity, insulin resistance, dyslipidemia, and hypertension. The Retinal Function Imager (RFI) is a new technique for measuring retinal blood-flow velocity. This study aims to compare retinal blood flow velocity between MetS and healthy subjects.Twenty eyes of 20 MetS males and 21 eyes of 21 aged-matched ...
Ardon Rubinstein, Marianna Yaron, Adiel Barak, Elena Izkhakov, Zvia Burgansky-Eliash, Russell Pokroy, Shay Gutfreund, Hanny Yeshua   +7 more
openaire   +3 more sources

Effects of aging on cardiac blood flow velocities

Journal of Clinical Ultrasound, 1988
AbstractThe effects of aging on cardiac blood flow velocities are important as a description of the natural history of the aging process and as a reference for evaluation of the aging cardiovascular system. We therefore studied these effects in 215 healthy volunteers, 120 males and 95 females, between 1 and 65 years old.
A. Heringa, Theo de Boo, Jeroen C.W. Hopman, Otto Daniëls, Pieter Wijn, Tjeerd van der Werf, Ina van Dam, Anton van Oort, J.H. Fast   +8 more
openaire   +3 more sources

Visually evoked blood flow response assessed by simultaneous two-channel transcranial Doppler using flow velocity averaging.

Stroke, 1996
BACKGROUND AND PURPOSE We assessed the influence of different visual stimuli and the reproducibility and habituation of evoked flow responses using simultaneous two-channel transcranial Doppler monitoring and flow velocity averaging.
Matthias Sturzenegger, David W. Newell, R. Aaslid   +2 more
semanticscholar   +1 more source

Effects of Smoking on Digital Blood-Flow Velocity

JAMA: The Journal of the American Medical Association, 1974
The ultrasonic Doppler flow meter was used to measure digital blood velocity in two groups of ten male volunteers. In the experimental group, digital blood-flow velocity was measured before and after smoking one cigarette. In the control group, two digital blood-flow velocity measurements were made at the same intervals.
Warren O. Nickel, James C. Austin, Chaman L. Sarin   +2 more
openaire   +3 more sources

Estimating Blood Flow Velocity in Liver Vessels

2009
Orthogonal polarization spectroscopy (OPS) is a technique for taking images to finally characterise microcirculation. Current image analysis algorithms have limitations when applied to image sequences obtained from the liver. We developed an automatic analysis tool which enables detection of liver vessels, measurement of vessel diameters, and ...
Müller, Michael, Keimling, René, Lang, Sascha, Pauli, Josef, Dahmen, Uta, Dirsch, Olaf   +5 more
openaire   +2 more sources

Portal Blood Velocity and Flow in Aging Man

Gerontology, 1989
The portal blood velocity and flow were measured by means of pulsed echo-Doppler in 60 normal subjects of 4 different age groups (less than or equal to 40, 41-55, 56-70, greater than or equal to 71 years). All subjects had normal routine liver function tests and no history of liver disease.
Marco Zoli, Tiziana Iervese, Giulio Marchesini, Emilio Pisi, G. P. Bianchi, S. Abbati   +5 more
openaire   +3 more sources

Determination of angiographic (TIMI grade) blood flow by intracoronary Doppler flow velocity during acute myocardial infarction.

Circulation, 1996
BACKGROUND This study compared angiographically graded coronary blood flow with intracoronary Doppler flow velocity in patients during percutaneous transluminal coronary angioplasty (PTCA) for acute myocardial infarction. Different TIMI angiographic flow
M. Kern, Joseph A. Moore, F. Aguirre, R. Bach, E. Caracciolo, T. Wolford, A. Khoury, C. Mechem, T. Donohue   +8 more
semanticscholar   +1 more source

Fluctuating cerebral blood-flow velocity in respiratory-distress syndrome. Relation to the development of intraventricular hemorrhage.

New England Journal of Medicine, 1983
We studied whether changes in cerebral blood-flow velocity occur during the respiratory-distress syndrome and whether, if present, they are related to the subsequent occurrence of intraventricular hemorrhage.
J. Perlman, J. McMenamin, J. Volpe
semanticscholar   +1 more source

Neonatal Cerebral Blood Flow Velocity Measurement

Clinics in Perinatology, 1985
This article discusses the background, methodology, previous clinical studies, and the clinical role and limitations of the noninvasive Doppler technique in the assessment of the cerebral circulation of the newborn infant.
openaire   +3 more sources