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A Guide to Structured Illumination TIRF Microscopy at High Speed with Multiple Colors

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Optimizing fluorescence imaging through scattering media using structured light-assisted wavefront shaping.

Nazifa Rumman^1,2, Pascal Bassène^3,2,4, Tianhong Wang^3,2

¹Electrical, Computer, and Systems Engineering Department, Rensselaer Polytechnic Institute, Troy, NY, USA.

|September 24, 2025

Summary

This summary is machine-generated.

This study introduces a novel wavefront shaping and Bessel-Gauss beam method to overcome light scattering in biological tissues, significantly improving fluorescence imaging resolution, contrast, and depth for advanced diagnostics.

Keywords:

Computational physics Optics Physics

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Area of Science:

Biomedical Optics
Fluorescence Microscopy
Light Scattering in Tissues

Background:

Light scattering in biological tissues degrades fluorescence imaging quality, impacting resolution, contrast, depth, and data interpretation.
Existing methods struggle to effectively mitigate scattering effects, limiting in-vivo and deep-tissue imaging capabilities.

Purpose of the Study:

To develop an advanced imaging technique that compensates for light scattering in biological tissues.
To enhance the resolution, contrast, and imaging depth of fluorescence microscopy.
To enable precise localization and tracking of multiple fluorescent targets within scattering media.

Main Methods:

Combined wavefront shaping (adjusting light phase and amplitude) with advanced image processing.
Utilized a Bessel-Gauss (BG) beam for its self-reconstruction properties after scattering.
Optimized signal collection for multiple fluorescent targets.

Main Results:

Demonstrated significant improvements in image resolution, contrast, and imaging depth.
Successfully achieved precise localization and tracking of fluorescent targets in various scattering media.
Validated the practical feasibility and effectiveness of the combined approach.

Conclusions:

The developed method effectively counteracts scattering-induced aberrations in biological tissues.
The integration of wavefront shaping and BG beams offers a powerful solution for deep-tissue fluorescence imaging.
This approach holds significant potential for advancing biological imaging, diagnostics, and research applications.