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From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope

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Fluorescence microscopy through scattering media with robust matrix factorization.

Zijun Gao¹, Zhi Ling², Wenhao Liu³

¹Laboratory for Systems Biophotonics, Georgia Institute of Technology, Atlanta, GA 30332, USA; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA; Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA 30332, USA; School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.

Cell Reports Methods

|April 29, 2025

Summary

This summary is machine-generated.

Robust non-negative principal matrix factorization (RNP) enhances fluorescence microscopy in scattering biological tissues. This method improves image clarity and depth, overcoming limitations of conventional optical imaging.

Keywords:

CP: Imaging CP: Systems biology fluorescence microscopy non-invasive imaging scattering imaging tissue imaging

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Area of Science:

Biomedical Optics
Microscopy
Image Processing

Background:

Biological tissues scatter light, degrading optical imaging quality and limiting imaging depth.
Extracting information from scattered light patterns is crucial for deep tissue imaging.
Conventional fluorescence microscopy struggles with signal interference in scattering environments.

Purpose of the Study:

To present a robust method for fluorescence microscopy in scattering biological tissues.
To overcome challenges of non-sparse signals and background interference.
To improve image quality and penetration depth in optical imaging.

Main Methods:

Developed robust non-negative principal matrix factorization (RNP).
Integrated robust feature extraction with non-negativity constraints.
Applied RNP on a standard epi-fluorescence platform.

Main Results:

Demonstrated significant improvements in image robustness and clarity.
Achieved enhanced field of view and depth of field.
Successfully imaged scattered cells and tissues under diverse scattering conditions.

Conclusions:

RNP effectively addresses scattering challenges in fluorescence microscopy.
The method offers a valuable tool for biomedical research requiring deep tissue imaging.
RNP enhances image quality without complex instrumentation.