Microscopic laser Doppler velocimeter for blood velocity measurement

1993 ◽  
Vol 32 (1) ◽  
pp. 15 ◽  
Author(s):  
Tomoaki Eiju
Keyword(s):  
Velocity Measurement ◽  
Blood Velocity ◽  
Laser Doppler ◽  
Laser Doppler Velocimeter

Dual-fiber laser doppler velocimeter and its application to the measurements of coronary blood velocity

Biorheology ◽  
1988 ◽  
Vol 25 (1-2) ◽  
pp. 227-235 ◽  
Author(s):  
F. Kajiya ◽  
O. Hiramatsu ◽  
Y. Ogasawara ◽  
K. Mito ◽  
K. Tsujioka
Keyword(s):  
Fiber Laser ◽  
Blood Velocity ◽  
Laser Doppler ◽  
Laser Doppler Velocimeter

Blood Velocity Measurement by Fiber Optic Laser Doppler Anemometry

1982 ◽  
Vol BME-29 (2) ◽  
pp. 142-145 ◽  
Author(s):  
David Kilpatrick ◽  
John V. Tyberg ◽  
William W. Parmley
Keyword(s):  
Velocity Measurement ◽  
Fiber Optic ◽  
Laser Doppler Anemometry ◽  
Blood Velocity ◽  
Laser Doppler

Two-dimensional point laser Doppler velocimeter for velocity measurement

2014 ◽  
Vol 22 (10) ◽  
pp. 2627-2632
Author(s):  
李秀明 LI Xiu-ming ◽  
黄战华 HUANG Zhan-hua ◽  
李翔宇 LI Xiang-yu ◽  
张昊 ZHANG Hao ◽  
龙宁波 LONG Ning-bo
Keyword(s):  
Velocity Measurement ◽  
Laser Doppler ◽  
Laser Doppler Velocimeter ◽  
Two Dimensional

Autonomic nervous system regulation of epicardial coronary vein systolic and diastolic blood velocity as measured by a laser Doppler velocimeter

1986 ◽  
Vol 64 (12) ◽  
pp. 1463-1472 ◽  
Author(s):  
W. K. Hellenbrand ◽  
G. A. Klassen ◽  
J. A. Armour ◽  
O. Sezerman ◽  
B. Paton
Keyword(s):  
Nervous System ◽  
Autonomic Nervous System ◽  
Cardiac Cycle ◽  
Stellate Ganglion ◽  
Blood Velocity ◽  
Laser Doppler ◽  
Right Atrial ◽  
Laser Doppler Velocimeter ◽  
Coronary Vein ◽  
Autonomic Nervous

The velocity of blood in a major epicardial coronary vein accompanying the left anterior descending coronary artery of dogs was measured by means of a 140-μm fiber optic probe connected to a laser Doppler velocimeter. Right atrial pressure, left ventricular intramyocardial and cavity pressures, aortic pressure, as well as peripheral and central coronary venous pressures were compared with the velocity of blood measured in the epicardial coronary vein midway between the sites of the catheters measuring proximal and distal coronary vein pressures. During control conditions, coronary vein velocity was 14–18 cm/s during systole and 1.0–2.1 cm/s during diastole. Right stellate ganglion stimulation, norepinephrine or isoproterenol increased diastolic coronary vein velocity significantly, whereas left stellate ganglion stimulation did not. Average peak systolic velocity was not affected by these interventions. During these positive inotropic interventions, the peak coronary vein velocity usually occurred later in the cardiac cycle than during control conditions. Positive inotropic interventions appeared to decrease coronary vein velocity during systole and increase it during diastole. Left vagosympathetic trunk stimulation decreased diastolic but not systolic coronary vein velocity and usually caused peak coronary vein velocity to occur earlier in the cardiac cycle than during control states. Changes induced by vagosympathetic trunk stimulation usually occurred within one cardiac cycle. It is concluded that coronary vein blood velocity can be influenced by the autonomic nervous system.

Blood velocity measurements using a fiber-coupled self-mixing diode-laser Doppler velocimeter

1993 ◽  
Author(s):  
Frits F. M. de Mul ◽  
Marco H. Koelink ◽  
Ralph Berendsen ◽  
Jan Greve ◽  
Reindert Graaff ◽  
...  
Keyword(s):  
Diode Laser ◽  
Blood Velocity ◽  
Laser Doppler ◽  
Laser Doppler Velocimeter ◽  
Velocity Measurements
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