Ultrasonic Flow Probe
Ultrasonic Flow Probe - Related Videos
02:22
Positioning Laser Doppler Probe: A Technique to Implant Probe Over Middle Cerebral Artery for Blood Flow Measurement in Murine Model
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2025
This video describes the surgical procedure to immobilize the laser Doppler probe over the murine brain's middle cerebral artery, or MCA. The probe helps to measure the blood flow in the brain's microvasculature by measuring the Doppler shift caused due to the motion of red blood cells within the artery.
09:25
Assessment of Ultrasonic Vocalizations During Drug Self-administration in Rats
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Cited by 17 •
2010
Drug self-administration and ultrasonic vocalizations (USV) are used as behavioral assessments in animal research, but rarely in combination. The purpose of this article is to describe the advantages of recording USVs during drug self-administration procedures to assess affective responses to drug experience.
08:33
Functionalization and Dispersion of Carbon Nanomaterials Using an Environmentally Friendly Ultrasonicated Ozonolysis Process
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Cited by 11 •
2017
Here, a novel method for the functionalization and stable dispersion of carbon nanomaterials in aqueous environments is described. Ozone is injected directly into an aqueous dispersion of carbon nanomaterial that is continuously recirculated through a high-powered ultrasonic cell.
11:00
Targeted Training of Ultrasonic Vocalizations in Aged and Parkinsonian Rats
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Cited by 31 •
2011
Voice disorders are debilitating in aging and Parkinson disease. The ultrasonic vocalizations of rats, also affected by these conditions, can be used to study these voice disorders, their neural substrates, and the nature of functional recovery with behavioral intervention.
10:16
Molecular Probe Optimization to Determine Cell Mortality in a Photosynthetic Organism (Microcystis aeruginosa) Using Flow Cytometry
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Cited by 2 •
2016
Microbial populations contain substantial cell heterogeneity, which can dictate overall behavior. Molecular probe analysis through flow cytometry can determine physiological states of cells, however its application varies between species. This study provides a protocol to accurately determine cell mortality within a cyanobacterium population, without underestimating or recording false positive results.
FAQs
The Doppler mechanism detects frequency changes in echoes scattered by moving red blood cells. As these cells move through a vessel, the returning sound differs from the transmitted signal. The size of that frequency shift indicates flow velocity, allowing investigators to turn cellular motion into a measurable physiological signal for studying circulation.
Transit-time designs infer flow by comparing how ultrasound travels through the fluid system, whereas Doppler systems analyze frequency shifts from echoes scattered by moving particles. Both approaches quantify fluid movement, but they rely on different signal features. This distinction helps researchers select an appropriate measurement principle for a particular vessel or experimental channel.
Flow velocity describes how quickly fluid movement is occurring within the measured vessel or channel. In Doppler measurements, it is the quantity most directly represented by the frequency shift from returning echoes. Interpreting this velocity as part of a broader flow assessment helps researchers examine circulation and hemodynamic changes in living specimens.
Changes in measured flow provide information about how fluid moves through the vascular system, supporting assessment of vascular resistance and hemodynamics. These measurements connect a physical signal to physiological function without treating circulation as merely qualitative. Consequently, researchers can examine how blood movement relates to cardiovascular behavior and organ performance.
In living specimens, investigators use the probe to make circulation a quantifiable experimental variable. Measurements of fluid movement can then support evaluation of vascular resistance, organ function, and overall cardiovascular behavior. This approach is valuable when researchers need physiological information from an intact biological system rather than relying only on isolated observations.
An ultrasonic flow probe can provide flow measurements before, during, or after an intervention that changes hemodynamics, allowing the resulting physiological effects to be assessed quantitatively. Researchers can examine altered circulation alongside vascular resistance or organ function. This makes the technique useful in cardiovascular research and experimental physiology focused on intervention outcomes.