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Related Experiment Video

Updated: Jul 30, 2025

Real-Time Monitoring of Neurocritical Patients with Diffuse Optical Spectroscopies
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Preliminary experience with diffuse correlation spectroscopy in acute ischemic stroke neurointerventional procedures.

Maxim Mokin1, Shail Thanki2, Penaz Parveen Sultana Mohammad3

  • 1Department of Neurosurgery and Brain Repair, University of South Florida College of Medicine, Tampa, Florida, USA mokin@usf.edu.

Journal of Neurointerventional Surgery
|May 17, 2023
PubMed
Summary

Diffuse correlation spectroscopy (DCS) non-invasively measures cerebral blood flow (CBF) during neurointerventional procedures. This technique shows feasibility for continuous monitoring and correlates with angiographic findings in stroke patients.

Keywords:
Blood FlowLaserStroke

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Area of Science:

  • Biomedical Optics
  • Neuroscience
  • Medical Devices

Background:

  • Diffuse Correlation Spectroscopy (DCS) is a non-invasive optical method for continuous blood flow monitoring.
  • It measures blood flow by analyzing light intensity fluctuations caused by red blood cells.

Purpose of the Study:

  • To evaluate the feasibility and safety of a custom DCS device for real-time cerebral blood flow (CBF) measurement.
  • To assess the correlation between DCS-derived CBF and angiographic findings in patients undergoing neuroendovascular interventions.

Main Methods:

  • Bilateral CBF measurements were performed using a custom DCS device in patients undergoing neuroendovascular interventions.
  • Data collected prospectively included experimental, clinical, and imaging information.
  • DCS measurements required photon count rates >30 KHz for adequate signal-to-noise ratio to detect blood flow pulsatility.

Main Results:

  • The DCS device was successfully used in nine subjects without safety concerns or workflow interference.
  • Six cases were analyzed, showing sufficient signal quality for pulsatility detection.
  • DCS-derived CBF changes correlated with angiographic assessments of cerebral reperfusion and flow arrest.

Conclusions:

  • Initial experience demonstrates the feasibility of DCS for non-invasive, continuous regional CBF monitoring in neurointerventional procedures.
  • DCS provides valuable insights into brain tissue properties during interventions.