Resolution-Enhanced Mesoscopic Imaging With Cylindrical Lens-Corrected Oblique Plane Light-Sheet Microscopy.

Area of Science:

• Microscopy
• Optical Imaging
• Biotechnology

Background:

• Single-objective light sheet fluorescence microscopy (LSFM) offers high-speed imaging for large samples.
• LSFM's resolution degrades at low magnifications due to limited fluorescence collection angles and resulting signal loss.

Purpose of the Study:

• To introduce a novel coaxial modulation module to enhance LSFM resolution at low magnifications.
• To provide a practical solution for low-numerical aperture (NA) oblique plane microscopy.

Main Methods:

• Incorporated a coaxial modulation module with two sets of cylindrical lenses.
• Utilized the camera's rolling shutter in conjunction with the lens system.
• Achieved 3D imaging by optimizing the fluorescence collection angle in low-magnification mode.

Main Results:

• Enhanced resolution by approximately 30% along the light propagation axis compared to existing LSFM methods.
• Validated sub-micron lateral and sub-cellular axial resolutions using fluorescent microspheres.
• Demonstrated feasibility for cell counting in GFP-labeled neurons and Siha cervical cancer cells.

Conclusions:

• The coaxial modulation module offers a practical approach to improve LSFM resolution, particularly at low magnifications.
• The developed system achieves high resolution suitable for detailed biological imaging and cell analysis.