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Related Experiment Video

Updated: Jan 10, 2026

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Dual-Channel Event Microscopy for Ultrafast Biological Imaging.

Ruipeng Guo1, Xueli Pan2, Qilin Deng1

  • 1Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215, USA.

Biorxiv : the Preprint Server for Biology
|November 24, 2025
PubMed
Summary
This summary is machine-generated.

Dual-Channel Event Microscopy (DEM) offers ultrafast, dual-color 3D imaging for biological dynamics. This new technology captures rapid cellular interactions and physiological processes with high speed and resolution.

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Area of Science:

  • Biophotonics and Imaging
  • Cellular and Molecular Imaging
  • Physiological Dynamics

Background:

  • Fundamental biological processes involve fast, multiscale dynamics across diverse cell types in 3D tissues.
  • Existing imaging modalities face limitations in balancing speed, spectral capacity, depth of field, and resolution.
  • Simultaneously capturing high temporal resolution, multicolor capability, and volumetric coverage is crucial for studying these dynamics.

Purpose of the Study:

  • To introduce Dual-Channel Event Microscopy (DEM), an imaging system designed to overcome tradeoffs in current technologies.
  • To demonstrate DEM's capability for ultrafast, dual-channel volumetric imaging across large fields of view.
  • To showcase DEM's application in visualizing rapid multicellular interactions and physiological dynamics in living systems.

Main Methods:

  • Integration of digital micromirror device (DMD)-based pulsed illumination.
  • Incorporation of extended depth-of-field (DOF) optics.
  • Utilization of event-based sensing for ultrafast, dual-channel volumetric imaging over a 2.3 × 1.3 mm2 FOV with a 200 μm DOF.

Main Results:

  • DEM achieved accurate spectral separation and reconstruction of rapid motion at kilohertz frame rates using fluorescent phantoms and flow assays.
  • In vivo imaging successfully visualized neutrophils and premalignant tumors in freely swimming zebrafish.
  • In immobilized specimens, DEM provided optical sectioning to reveal fine vascular networks and cardiac blood flow; it also mapped blood-flow dynamics in zebrafish tails with high temporal fidelity.

Conclusions:

  • DEM unites ultrafast acquisition, dual-channel capability, volumetric coverage, and intrinsic optical sectioning in an event-driven architecture.
  • This technology offers a powerful platform for visualizing rapid multicellular interactions and physiological dynamics in living systems.
  • DEM overcomes previous imaging limitations, enabling unprecedented insights into complex biological processes.