Widefield fluorescence sectioning with HiLo microscopy.

Area of Science:

• Optics and Photonics
• Biomedical Imaging
• Microscopy

Background:

• Widefield fluorescence microscopy often lacks precise depth discrimination.
• Optical sectioning is crucial for imaging thick or scattering samples like brain tissue.
• Existing techniques may require complex setups or specialized hardware.

Purpose of the Study:

• To explain the theoretical principles of HiLo microscopy.
• To demonstrate practical implementations of HiLo microscopy.
• To highlight its utility in biological and medical imaging.

Main Methods:

• HiLo microscopy combines images acquired with structured (non-uniform) and uniform illumination.
• Depth information is extracted by analyzing the differences between these image sets.
• The technique is a computational method applied post-acquisition or in real-time.

Main Results:

• HiLo microscopy effectively provides optical sectioning capabilities in fluorescence imaging.
• Demonstrated successful depth-resolved imaging of brain tissue.
• Showcased applications in fluorescence endomicroscopy for in vivo imaging.

Conclusions:

• HiLo microscopy offers a robust and versatile approach for depth-resolved fluorescence imaging.
• It enhances imaging quality and provides valuable depth information in challenging biological samples.
• The technique presents a practical solution for advanced microscopy applications.