scholarly journals Dynamic microcirculation PIPE model for functional neuroimaging, non-neuroimaging, and coherent hemodynamics spectroscopy: blood volume and flow velocity variations, and vascular autoregulation

2020 ◽  
Vol 11 (8) ◽  
pp. 4602
Author(s):  
M. Xu ◽  
Yang Zheng ◽  
Xinlin Chen ◽  
Ying Li ◽  
Weihao Lin ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Blood Volume ◽  
Functional Neuroimaging ◽  
Pipe Model ◽  
Velocity Variations ◽  
Vascular Autoregulation

scholarly journals Mesenteric flow velocity variations as a function of angle of insonation

1990 ◽  
Vol 11 (5) ◽  
pp. 688-694 ◽  
Author(s):  
Robert J. Rizzo ◽  
Gail Sandager ◽  
Patricia Astleford ◽  
Kathleen Payne ◽  
Linda Peterson-Kennedy ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Velocity Variations

341 A Study of Simultaneous Measurement of Vocal Fold Vibrations and Flow Velocity Variations Just Above the Glottis

2006 ◽  
Vol 2006 (0) ◽  
pp. _341-1_-_341-6_
Author(s):  
Shiro ARII ◽  
Hideyuki KATAOKA ◽  
Yoshitaka OCHIAI ◽  
Kensaku HASEGAWA ◽  
Toyohiko SUZUKI ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Simultaneous Measurement ◽  
Vocal Fold ◽  
Velocity Variations

scholarly journals Blood Flow After Exercise-Induced Muscle Damage

2015 ◽  
Vol 50 (4) ◽  
pp. 400-406 ◽  
Author(s):  
Noelle M. Selkow ◽  
Daniel C. Herman ◽  
Zhenqi Liu ◽  
Jay Hertel ◽  
Joseph M. Hart ◽  
...  
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Muscle Damage ◽  
Blood Volume ◽  
Visual Analog Scale ◽  
Blood Flow Velocity ◽  
Acute Inflammation ◽  
Analog Scale ◽  
Muscle Perfusion ◽  
Eccentric Muscle Damage

Context The most common modality used to address acute inflammation is cryotherapy. Whereas pain decreases with cryotherapy, evidence that changes occur in perfusion of skeletal muscle is limited. We do not know whether ice attenuates the increases in perfusion associated with acute inflammation. Objective To examine the effects of repeated applications of ice bags on perfusion of the gastrocnemius muscle after an eccentric exercise protocol. Design Controlled laboratory study. Setting Laboratory. Patients or Other Participants Eighteen healthy participants (3 men, 15 women; age = 22.2 ± 2.2 years, height = 166.0 ± 11.9 cm, mass = 69.4 ± 25.0 kg). Intervention(s) To induce eccentric muscle damage, participants performed 100 unilateral heel-lowering exercises off a step to the beat of a metronome. A randomized intervention (cryotherapy, sham, control) was applied to the exercised lower extremity immediately after the protocol and again at 10, 24, and 34 hours after the protocol. Main Outcome Measure(s) Baseline perfusion measurements (blood volume, blood flow, and blood flow velocity) were taken using contrast-enhanced ultrasound of the exercised leg. Perfusion was reassessed after the first intervention and 48 hours after the protocol as percentage change scores. Pain was measured with a visual analog scale at baseline and at 10, 24, 34, and 48 hours after the protocol. Separate repeated-measures analyses of variance were used to assess each dependent variable. Results We found no interactions among interventions for microvascular perfusion. Blood volume and blood flow, however, increased in all conditions at 48 hours after exercise (P < .001), and blood flow velocity decreased postintervention from baseline (P = .041). We found a time-by-intervention interaction for pain (P = .009). Visual analog scale scores were lower for the cryotherapy group than for the control group at 34 and 48 hours after exercise. Conclusions Whereas eccentric muscle damage resulted in increased blood flow, ice did not decrease muscle perfusion 48 hours after exercise. Therefore, ice does not seem to decrease muscle perfusion when blood flow is elevated, as it would be during inflammation.

Mesenteric flow velocity variations as a function of angle of insonation

1990 ◽  
Vol 11 (5) ◽  
pp. 688-694 ◽  
Author(s):  
Robert J. Rizzo ◽  
Gail Sandager ◽  
Patricia Astleford ◽  
Kathleen Payne ◽  
Linda Peterson-Kennedy ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Velocity Variations

Flow Velocity Variations in the Pulmonary Veins of the Dog

1968 ◽  
Vol 3 (2) ◽  
pp. 73-80 ◽  
Author(s):  
Carlos M. Ferrario ◽  
Bj??rn Nordenstr??m ◽  
Sven Paulin
Keyword(s):  
Flow Velocity ◽  
Pulmonary Veins ◽  
Velocity Variations
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