Results 91 to 100 of about 73,435 (258)

Time-of-flight resolved light field fluctuations reveal deep human tissue physiology. [PDF]

, 2020
Red blood cells (RBCs) transport oxygen to tissues and remove carbon dioxide. Diffuse optical flowmetry (DOF) assesses deep tissue RBC dynamics by measuring coherent fluctuations of multiply scattered near-infrared light intensity.
Du Le, VN, Kholiqov, Oybek, Srinivasan, Vivek J, Zhang, Tingwei, Zhou, Wenjun   +4 more
core  

Non-invasive study for peripheral circulation in patients with diabetes mellitus [PDF]

, 2002
The purpose of this study is to establish a new, non - invasive diagnostic technique for peripheral circulation in patients with diabetes mellitus in the early stage of arteriosclerosis obliterans (ASO) as one of the complications of diabetes mellitus ...
Ashida, Kozo, Hosaki, Yasuhiro, Mitsunobu, Fumihiro, Nishida, Norikazu, Ochi, Koji, Okamoto, Makoto, Takata, Shingo, Tanizaki, Yoshiro, Tsugeno, Hirofumi, Tsuji, Takao, Yokoi, Tadashi   +10 more
core   +1 more source

Choroidal Laser Doppler Flowmetry in Healthy Subjects [PDF]

Archives of Ophthalmology, 2000
To evaluate normal choroidal blood flow and its relationship with various factors such as age, systemic blood pressure, and intraocular pressure (IOP).A total of 70 healthy subjects were recruited. Choroidal blood flow was assessed using a method based on laser Doppler flowmetry (LDF) technique.
M, Straubhaar, S, Orgül, K, Gugleta, A, Schötzau, C, Erb, J, Flammer   +5 more
openaire   +2 more sources

Increases in skin perfusion and blood oxygen in the non‐exercising human limbs during exercise in the heat: Implications for control of circulation

Experimental Physiology, EarlyView.
Abstract Blood flow in the inactive limb tissues and skin is widely thought to decline during incremental exercise to exhaustion due to augmented sympathoadrenal vasoconstrictor activity, but direct evidence to support this view is lacking. Here, we investigated the inactive‐forearm haemodynamic (Q̇forearm${\dot{Q}}_{\mathrm{forearm}}$) and oxygenation
Steven J. Trangmar, José González‐Alonso   +1 more
wiley   +1 more source

Structured-illumination photoacoustic Doppler flowmetry of axial flow in homogeneous scattering media [PDF]

, 2013
We propose a method for photoacoustic flow measurement based on the Doppler effect from a flowing homogeneous medium. Excited by spatially modulated laser pulses, the flowing medium induces a Doppler frequency shift in the received photoacoustic signals.
Maslov, Konstantin I., Wang, Lihong V., Yao, Junjie, Zhang, Ruiying   +3 more
core   +1 more source

Sex differences in cerebral blood flow and cardiac function in response to exercise in the heat

Experimental Physiology, EarlyView.
Abstract We investigated the effect of exercising in hot conditions on cerebral blood flow and systolic left ventricular (LV) function in males and females, to explore sex differences. The experimental condition consisted of walking on a treadmill at 5 km/h and 2% incline, inside a heat chamber at 40°C (50% relative humidity), for 90 min.
João Carlos Locatelli, Juliene G. Costa, Kristanti W. Wigati, Jesse L. Criddle, Julie J. Collis, Xingwei Xu, Louise H. Naylor, Howard H. Carter, Shane K. Maloney, Robert A. McLaughlin, Andrew Haynes, Helen Jones, Keith George, Daniel J. Green   +13 more
wiley   +1 more source

Diagnostics of Microcirculatory Disorders in Children with Infectious Pathology

Проблемы особо опасных инфекций, 2012
Laser Doppler flowmetry method (LDF) was used to examine children (43 patients with enteroviral infection, 34 patients with Astrakhan rickettsial fever, and 40 healthy controls).
O. V. Grachieva, G. A. Kharchenko, D. N. Rasskazov, R. A. Sadretdinov   +3 more
doaj   +1 more source

Sex differences in the prefrontal cortex and muscle oxygenation during exercise until exhaustion in endurance‐trained individuals

Experimental Physiology, EarlyView.
Abstract figure legend During cardiopulmonary exercise testing, the decline in oxygenation in the prefrontal cortex of women is striking. This crucial brain area is directly involved in planning motor tasks. The decline is particularly pronounced at higher exercise intensities, especially after reaching the respiratory compensation point or anaerobic ...
Daniel Ramos‐López, Raúl Caulier‐Cisterna, Benjamín Díaz‐Ortiz, Cristóbal Baumann‐Biancani, Kamilo Hunger‐Abbott, Matías Herrera‐Matas, Andrés Vega‐Moraga, Vitor A. Lira, Maximiliano Espinosa‐Ramírez, Karol Ramírez‐Parada, Luigi Gabrielli‐Nervi, Hugo E. Verdejo, Felipe Contreras‐Briceño   +12 more
wiley   +1 more source

Quantifying microvascular responses to local heating using optical coherence tomography: Comparison between skin sites and sex differences

Experimental Physiology, EarlyView.
Summary of the study design, metholodgy, results and conclusions. Abstract Due to a lack of technical capacity to directly visualise and quantify microvessels in the skin, little is known regarding regional and/or sex differences. We compared diameter, velocity, flow and density at four regional sites using a novel optical coherence tomography (OCT ...
Juliene G. Costa, Kristanti W. Wigati, Louise H. Naylor, Helen Jones, Robert A. McLaughlin, Daniel J. Green   +5 more
wiley   +1 more source

LASER DOPPLER FLOWMETER WITH DIFFERENTIAL ANALYSIS OF THE RHYTHMIC COMPONENT OF MICROVASCULAR HEMODINAMIC

Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The results of the development and research of laser Doppler flowmetry for the diagnosis of microvascular hemodynamics with a differential analysis of the rhythmic component are presented.
V. I. Ivanov, N. I. Ivanov, A. N. Lazarchik   +2 more
doaj