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HiLo Based Line Scanning Temporal Focusing Microscopy for High-Speed, Deep Tissue Imaging.
Ruheng Shi1, Yuanlong Zhang2, Tiankuang Zhou2,3
1State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China.
Membranes
|August 26, 2021
Summary
We developed a novel microscopy technique combining structured illumination with line scanning temporal focusing microscopy (LSTFM) to improve deep tissue imaging. This method enhances contrast and axial confinement for clearer visualization of biological structures in vivo.
Area of Science:
- Biomedical optics
- Neuroimaging
- Microscopy
Background:
- High-speed, optical-sectioning microscopy is crucial for 3D biomedical studies.
- Line scanning temporal focusing microscopy (LSTFM) offers high temporal resolution and deep penetration but suffers from poor contrast in scattering tissues.
- Existing methods struggle with image quality in scattering biological samples.
Purpose of the Study:
- To enhance image contrast and axial confinement in deep tissue imaging using LSTFM.
- To overcome the limitations of LSTFM in scattering biological environments.
- To develop a superior imaging method for in vivo neuronal and microglia dynamics.
Main Methods:
- Implementation of a HiLo-based LSTFM system.
- Utilizing structured illumination to suppress fluorescence background.
- Applying the technique for in vivo imaging of mouse brains.
Main Results:
- Demonstrated enhanced image contrast and axial confinement in deep imaging.
- Successfully performed volumetric imaging of neurons in vivo.
- Achieved dynamical imaging of microglia in mouse brains with improved clarity.
Conclusions:
- The HiLo-based LSTFM significantly improves image quality in scattering tissues.
- This technique is superior for deep in vivo imaging of neural structures and dynamics.
- The method provides a powerful tool for advancing biomedical research in neuroscience.
