Results 161 to 170 of about 865 (192)

Speckle Variance Photoacoustic Microscopy for Microhemodynamic Imaging

ACS Sensors
Relying on the strong optical absorption of hemoglobin to pulsed laser energy, photoacoustic microscopy provides morphological and functional information on microvasculature label-freely. Here, we propose speckle variance photoacoustic microscopy (SV-PAM), which harnesses intrinsic imaging contrast from temporal-varied photoacoustic signals of moving ...
Wei Song, Yiyan Zhuang, Yifan Yang, Deyan Xie, Changjun Min, Xiaocong Yuan   +5 more
openaire   +2 more sources

Improvement of Hepatic Microhemodynamics by N-Acetylcysteine after Warm Ischemia

European Surgical Research, 1996
In this study we investigated the influence of N-acetylcysteine (NAC) on the hepatic microcirculation after warm ischemia by intravital fluorescence microscopy. Clamping of the left liver lobe was performed in 20 male Wistar rats for 70 min. The treatment group (n = 10) received 400 mg NAC/kg body weight 20 min prior to clamping.
T A, Koeppel, J C, Thies, T, Lehmann, M M, Gebhard, C, Herfarth, G, Otto, S, Post   +6 more
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Influences of Macrohemodynamic Conditions on Systemic Microhemodynamic Changes in Burns

Annals of Plastic Surgery, 2016
The clinical course after major burns is characterized by microcirculatory changes and consecutive capillary leakage. However, current clinical monitoring does not properly assess microcirculation, whereas macrohemodynamic changes are continuously evaluated.
Hernekamp, Jochen-Frederick, Neubrech, Florian, Cordts, Tomke, Schmidt, Volker J, Kneser, Ulrich, Kremer, Thomas   +5 more
openaire   +3 more sources

Microhemodynamic and cellular mechanisms of activated protein C action during endotoxemia*

Critical Care Medicine, 2004
To characterize microcirculatory actions of activated protein C in an endotoxemia rodent model that allows in vivo studies of microvascular inflammation and perfusion dysfunction.Animal study using intravital microscopy.Animal research facility.Male Syrian golden hamsters, 6-8 wks old with a body weight of 60-80 g.In skinfold preparations, endotoxemia ...
Johannes N, Hoffmann, Brigitte, Vollmar, Matthias W, Laschke, Dietrich, Inthorn, Jan, Fertmann, Friedrich W, Schildberg, Michael D, Menger   +6 more
openaire   +2 more sources

Reliability of peripheral intraneural microhemodynamics evaluation by using contrast-enhanced ultrasonography

Journal of Medical Ultrasonics, 2014
The purpose of the study was to validate the reliability of quantitative intraneural enhancement patterns by using contrast-enhanced ultrasonography (CEUS).Nine asymptomatic wrists underwent a total of three CEUS examinations each conducted at 1-month intervals. The CEUS enhancement pattern of median nerves was quantitatively evaluated.
Kinya, Ishizaka, Mutsumi, Nishida, Makoto, Motomiya, Megumi, Satoh, Mamiko, Inoue, Yusuke, Kudoh, Satomi, Omotehara, Tatsunori, Horie, Tadanao, Funakoshi, Norimasa, Iwasaki   +9 more
openaire   +2 more sources

[Effects of chronic hypokinetic stress on microhemodynamics of tissue].

Rossiiskii fiziologicheskii zhurnal imeni I.M. Sechenova, 2015
By laser Doppler flowmetry investigated tissue microhemodynamics rats kept hypokinesia under 10 days. Investigation of the structure of rhythms blood flow oscillations in microvasculature revealed that chronic hypokinetic stress leads to a significant reduction of the oscillator and nonoscillation microhemodynamics indicators, reflected in the ...
E N, Chuyan, M Yu, Ravaeva
openaire   +1 more source

Quantitative Assessment of Microhemodynamics in Ischemic Skin Flap Tissue by Intravital Microscopy

Annals of Plastic Surgery, 1999
Skin flaps are susceptible to ischemia, which may result in tissue necrosis particularly in areas deprived of their original anatomic blood supply. The pathophysiology of skin flap failure has been debated for many years, but due to methodological insufficiencies, every proposed theory has remained hypothetical.
D, Erni, H, Sakai, A, Banic, H M, Tschopp, M, Intaglietta   +4 more
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Measurement of microhemodynamics in the ventilated rabbit lung by intravital fluorescence microscopy

Journal of Applied Physiology, 1993
Pulmonary microhemodynamic parameters were directly measured along with systemic pressures and cardiac output in the ventilated rabbit lung. Subpleural arterioles and venules ranging from 10 to 35 microns luminal diameter were investigated under zone 2 conditions, i.e., during inspiratory plateau at an airway pressure of 8 mmHg.
G E, Kuhnle, F H, Leipfinger, A E, Goetz
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Distinct microhemodynamic efficacy of arteriogenesis and angiogenesis in critically ischemic skin flaps

Microvascular Research, 2012
Angiogenesis and arteriogenesis are regenerative vascular mechanisms dedicated to cope with critical ischemia after the interruption of the anatomical axial blood supply. The aim of the present study was to visualize, quantify and monitor the orchestration of these mechanisms and their microhemodynamic efficacy.
Merz Katrin, Schweizer Riccardo, Schlosser Stefan, Giovanoli Pietro, Erni Dominique, Plock Jan A   +5 more
openaire   +2 more sources

[Parodontal microhemodynamics status in patients with vascular dystonias].

Stomatologiia, 2008
The state of peridontal microhemodynamics was investigated in 80 patients with an initial arterial hypotension (IAH) and 70 patients with an arterial hypertension (AH) of different age-groups (6, 15, 20-24, 40-45 years) according to the laser dopplerography method.
openaire   +1 more source