Cerebral Blood Flow
Cerebral Blood Flow - Related Videos
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Developing a Cerebral Blood Flow Atlas for Blood Flow Mapping
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2025
Source: Tan, Z., et al., Construction and Application of Cerebral Functional Region-Based Cerebral Blood Flow Atlas Using Magnetic Resonance Imaging-Arterial Spin Labeling. J. Vis. Exp. (2024).This video demonstrates the method to construct a cerebral blood flow atlas by integrating magnetic resonance imaging or MRI-arterial spin labeling data with segmented brain regions, visualizing blood flow patterns, and quantifying flow levels across functional areas.
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Visualizing Cerebral Blood Flow During Ischemia in a Mouse Using a Fluorescent Tracer
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2025
Make a neck incision to expose and loosely ligate the bilateral common carotid arteries.
03:47
Functional Imaging of Cerebral Blood Flow Using Transcranial Doppler Ultrasound
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2025
Source: Hage, B. D. et. al., Functional Transcranial Doppler Ultrasound for Monitoring Cerebral Blood Flow. J. Vis. Exp. (2021) This video demonstrates the use of Doppler ultrasound as a functional imaging tool to measure cerebral blood flow velocity, or CBFV in real time. It highlights how frequency shifts in the middle cerebral artery during tasks like breath-holding reveal changes in CBFV, offering insights into brain activity and vascular dynamics.
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Diffuse Correlation Spectroscopy to Assess Cerebral Blood Flow in a Mouse Model
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2025
In this video, we demonstrate the diffuse correlation spectroscopy technique to measure cerebral blood flow in a mouse model of mild traumatic brain injury.
05:09
Diffuse Correlation Spectroscopy to Measure Cerebral Blood Flow in a Human Subject
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2025
Source: Menezes Forti, R. et al. Real-Time Monitoring of Neurocritical Patients with Diffuse Optical Spectroscopies. J. Vis. Exp. (2020)This video demonstrates the use of Diffuse Correlation Spectroscopy (DCS) to measure cerebral blood flow in humans. It outlines the steps for preparing the system, calibrating the probe, positioning it on the participant’s forehead, acquiring scattered light data, and analyzing intensity fluctuations to interpret blood flow dynamics in the brain.
FAQs
Neurovascular coupling links changes in neural activity to local adjustments in cerebral vessel diameter. When active regions alter their chemical environment, nearby vessels can change resistance, helping blood delivery better match activity. This relationship gives researchers a way to examine how brain function and circulation interact rather than treating blood flow as an independent process.
Carbon dioxide acts as a key chemical regulator of cerebral circulation. Changes in its level can alter vessel diameter and therefore vascular resistance, shifting blood delivery even when neural activity has not been the primary change. Monitoring this relationship helps researchers evaluate how effectively the brain maintains appropriate circulation as these physiological variables change.
Arterial pressure influences cerebral blood flow by changing the pressure driving blood through the brain’s vascular network. Cerebral vessels adjust their diameter in response, modifying resistance and helping stabilize delivery. This pressure-dependent regulation matters when interpreting blood-flow measurements because an observed change may reflect altered arterial pressure, local chemical signaling, or their combined effects.
Measurement can illuminate neurovascular coupling, brain metabolism, and cerebrovascular health. Researchers can compare blood delivery with neural activity and examine whether circulation supports the brain’s demand for oxygen and glucose while removing metabolic waste. These measurements therefore connect vascular behavior with functional and metabolic changes in biology.
Studies of cerebral blood flow help researchers investigate how impaired circulation affects brain tissue in stroke, traumatic brain injury, and dementia. Comparing blood-flow behavior across these conditions can clarify cerebrovascular changes and their relationship to brain function. The findings support research into disease mechanisms, cerebrovascular assessment, and strategies intended to protect tissue when circulation is compromised.
Its regulation provides a functional indicator of cerebrovascular health, while its measurement can show whether brain circulation remains compatible with tissue demands. In clinical research, this information supports assessment of circulation-related impairment and guides development of treatments designed to protect brain tissue when blood delivery is disrupted.