scholarly journals Blood flow dynamics in the limb conduit artery during dynamic knee extensor exercise assessed by continuous Doppler ultrasound measurements

2014 ◽  
Vol 3 (4) ◽  
pp. 409-421 ◽  
Author(s):  
Takuya Osada ◽  
Norio Murase ◽  
Ryotaro Kime ◽  
Toshihito Katsumura ◽  
Göran Rådegran
Keyword(s):  
Blood Flow ◽  
Doppler Ultrasound ◽  
Knee Extensor ◽  
Flow Dynamics ◽  
Conduit Artery ◽  
Ultrasound Measurements ◽  
Blood Flow Dynamics ◽  
Continuous Doppler

471 Use of doppler ultrasound to evaluate testicular blood flow dynamics in bulls

2017 ◽  
Vol 95 (suppl_4) ◽  
pp. 230-230
Author(s):  
P. Favaro ◽  
F. A. Barca ◽  
G. R. Pereira ◽  
S. R. Menegassi ◽  
J. O. Barcellos ◽  
...  
Keyword(s):  
Blood Flow ◽  
Doppler Ultrasound ◽  
Flow Dynamics ◽  
Testicular Blood Flow ◽  
Blood Flow Dynamics

scholarly journals Nephron blood flow dynamics measured by laser speckle contrast imaging

2011 ◽  
Vol 300 (2) ◽  
pp. F319-F329 ◽  
Author(s):  
Niels-Henrik Holstein-Rathlou ◽  
Olga V. Sosnovtseva ◽  
Alexey N. Pavlov ◽  
William A. Cupples ◽  
Charlotte Mehlin Sorensen ◽  
...  
Keyword(s):  
Blood Flow ◽  
Signal Transmission ◽  
Experimental Studies ◽  
Flow Dynamics ◽  
Laser Speckle ◽  
Tubuloglomerular Feedback ◽  
Contrast Imaging ◽  
Laser Speckle Contrast Imaging ◽  
Speckle Contrast ◽  
Blood Flow Dynamics

Tubuloglomerular feedback (TGF) has an important role in autoregulation of renal blood flow and glomerular filtration rate (GFR). Because of the characteristics of signal transmission in the feedback loop, the TGF undergoes self-sustained oscillations in single-nephron blood flow, GFR, and tubular pressure and flow. Nephrons interact by exchanging electrical signals conducted electrotonically through cells of the vascular wall, leading to synchronization of the TGF-mediated oscillations. Experimental studies of these interactions have been limited to observations on two or at most three nephrons simultaneously. The interacting nephron fields are likely to be more extensive. We have turned to laser speckle contrast imaging to measure the blood flow dynamics of 50–100 nephrons simultaneously on the renal surface of anesthetized rats. We report the application of this method and describe analytic techniques for extracting the desired data and for examining them for evidence of nephron synchronization. Synchronized TGF oscillations were detected in pairs or triplets of nephrons. The amplitude and the frequency of the oscillations changed with time, as did the patterns of synchronization. Synchronization may take place among nephrons not immediately adjacent on the surface of the kidney.

Muscle Blood-Flow Dynamics at Exercise Onset

2006 ◽  
Vol 38 (10) ◽  
pp. 1811-1818 ◽  
Author(s):  
MICHAEL E. TSCHAKOVSKY ◽  
NATASHA R. SAUNDERS ◽  
KATHERINE A. WEBB ◽  
DENIS E. O'DONNELL
Keyword(s):  
Blood Flow ◽  
Muscle Blood Flow ◽  
Flow Dynamics ◽  
Exercise Onset ◽  
Blood Flow Dynamics

Investigation of blood flow dynamics by NMR angiography

1990 ◽  
Vol 8 (2) ◽  
pp. 167-172 ◽  
Author(s):  
Q. Guo ◽  
L. Friloux ◽  
O. Nalcioglu
Keyword(s):  
Blood Flow ◽  
Flow Dynamics ◽  
Blood Flow Dynamics
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