Meso-Scale Particle Image Velocimetry Studies of Neurovascular Flows In Vitro

Area of Science:

• Bioengineering
• Fluid Dynamics
• Biomedical Imaging

Background:

• Particle image velocimetry (PIV) is crucial for flow visualization but often requires expensive equipment.
• High costs of mesoscale tissue phantoms limit in vitro bioengineering studies.
• Existing methods present barriers for non-expert researchers in mesoscale flow analysis.

Purpose of the Study:

• To develop a simplified, cost-effective experimental protocol for mesoscale flow characterization.
• To reduce the reliance on specialized instrumentation for PIV in bioengineering.
• To enhance accessibility of advanced flow visualization techniques.

Main Methods:

• Fabrication of mesoscale tissue phantoms using 3-D printing and silicone casting.
• Development of an open-source image analysis and processing framework.
• Application of the protocol for neurovascular flow characterization.

Main Results:

• Successfully created low-cost mesoscale tissue phantoms.
• Developed an accessible open-source PIV analysis framework.
• Demonstrated effective mesoscale flow measurement (velocities up to tens of mm/s).

Conclusions:

• The presented protocol significantly lowers the barrier to entry for mesoscale flow studies in bioengineering.
• The method is applicable to neurovascular research and other mesoscale applications.
• This approach democratizes advanced flow visualization techniques for researchers.