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Numerical simulation of deformable particles in a Coulter counter
Pierre Taraconat1,2, Jean-Philippe Gineys1, Damien Isebe1
1HORIBA Medical, Montpellier, France.
Summary
This study presents a new numerical method to accurately simulate cell dynamics and electrical signals in Coulter counters, improving cell sizing accuracy for both rigid and deformable particles.
Area of Science:
- Biophysics
- Computational Biology
- Cellular Analysis
Background:
- Coulter counters measure cell size and count by analyzing electrical pulses.
- Cell dynamics and deformability can affect the accuracy of volume measurements.
Purpose of the Study:
- To develop and validate a numerical simulation pipeline for cell dynamics and electrical signatures in Coulter counters.
- To account for red blood cell deformability in simulations.
- To improve the understanding of particle sizing in Coulter counters.
Main Methods:
- A multi-scale numerical pipeline was developed, segmenting cell dynamics and electrical response computations.
- Simulations were performed for rigid spheres and deformable red blood cells in an industrial Coulter counter geometry.
- The simulation results were compared with experimental measurements.
Main Results:
- The numerical pipeline significantly reduced computational time by an order of magnitude.
- Simulations accurately reproduced experimentally measured electrical signatures.
- Analysis revealed the influence of electrical field heterogeneity and particle dynamics on electrical signatures.
Conclusions:
- The developed methodology enables accurate computation of sizing for rigid and deformable particles using Coulter counters.
- This approach enhances the understanding of cell signatures in Coulter counter devices.
- It offers a pathway to improved cell analysis and diagnostics.
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