Arterial Flow Measurement
Arterial Flow Measurement - 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.
10:05
Measuring Turbulent Flows
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2023
Source: Ricardo Mejia-Alvarez and Hussam Hikmat Jabbar, Department of Mechanical Engineering, Michigan State University, East Lansing, MI Turbulent flows exhibit very high frequency fluctuations that require instruments with high time-resolution for their appropriate characterization. Hot-wire anemometers have a short enough time-response to fulfill this requirement. The purpose of this experiment is to demonstrate the use of hot-wire anemometry to characterize a turbulent jet. In this...
06:39
Ultrasound Based Assessment of Coronary Artery Flow and Coronary Flow Reserve Using the Pressure Overload Model in Mice
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Cited by 20 •
2015
Coronary flow reserve (CFR) is useful for assessment of myocardial oxygen demand and evaluation of cardiovascular risk. This study establishes a step-by-step transthoracic Doppler echocardiographic (TTDE) method for longitudinal monitoring of the changes in CFR, as measured from coronary artery in mice, under the experimental pressure overload of aortic banding.
09:40
Ultrasound Assessment of Flow-Mediated Dilation of the Brachial and Superficial Femoral Arteries in Rats
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Cited by 11 •
2016
Non-invasive assessment of endothelial function in humans can be determined by the flow-mediated dilation technique. Although thousands of studies have used this technique, no study has performed this technique non-invasively in rats. The following article describes non-invasive measurement of flow-mediated dilation in the brachial and superficial femoral arteries of rats.
07:21
Measurement of Pulmonary Artery Pressure in Rats Using Right Heart Catheterization
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2025
The protocol provides a detailed introduction to the experience of using the right heart catheterization method to detect pulmonary artery pressure in rats, which will help to obtain accurate data more efficiently and improve the success rate of the experiment. This method also improves the reproducibility of experiments across different laboratories.
FAQs
Doppler ultrasound estimates arterial blood-flow velocity by analyzing frequency shifts in sound waves reflected from moving blood. The shift provides information about how quickly blood is moving, while the direction of flow helps establish the movement pattern within the artery. Combining velocity and direction with vessel measurements gives a more informative picture of local hemodynamics than velocity alone.
Vessel diameter is essential when the goal is volumetric flow rather than velocity alone. A velocity reading describes movement speed, but incorporating the artery’s diameter helps determine how much blood passes through the vessel. This distinction matters when interpreting arterial circulation because a measured change may reflect altered blood movement, vessel dimensions, or both.
Arterial flow measurements connect blood pressure and vessel properties with circulation because these factors influence hemodynamics, the behavior of blood movement within vessels. Changes in vascular resistance can alter the measured flow pattern. Examining these variables together helps researchers relate a recorded change in arterial flow to broader cardiovascular function rather than treating the measurement as an isolated number.
An arterial flow assessment can combine Doppler-derived velocity with observations of flow direction and vessel diameter. Interpreting these measurements together supports estimation of volumetric flow and characterization of hemodynamic changes. The resulting profile can then be examined for patterns associated with altered circulation, including effects linked to narrowing, obstruction, aneurysms, or changes in vascular resistance.
Arterial flow measurement is especially useful when researchers or clinicians need to examine possible narrowing, obstruction, or aneurysms. These conditions can modify blood movement and vascular behavior, producing changes in the measured flow pattern. Flow data therefore contribute to evaluating how an abnormal vessel structure affects circulation and can support assessment of vascular health.
In biology, these measurements allow researchers to study how blood pressure, vessel properties, and vascular resistance influence circulation. In medicine, the findings can support diagnosis, treatment planning, and monitoring of vascular health. Repeated or comparative measurements can also help evaluate cardiovascular function and track changes in arterial circulation over time.