Label-Free Multimodal Multiphoton Intravital Imaging.

Area of Science:

• Biomedical Optics
• In Vivo Imaging
• Microscopy

Background:

• Label-free intravital optical imaging is an emerging visualization technique.
• It avoids exogenous labeling or genetic alterations, preserving biological integrity.
• Endogenous biomolecules provide intrinsic contrast for imaging.

Purpose of the Study:

• To highlight the utility of label-free intravital optical imaging in biological and preclinical research.
• To discuss its evolution and expanding applications.
• To emphasize its potential for translational clinical use.

Main Methods:

• Utilizes intrinsic contrast from endogenous biomolecules.
• Evolved from single-modality, single-photon to multimodal, multiphoton imaging.
• Enables simultaneous acquisition of different contrasts.

Main Results:

• Avoids perturbation of biological processes and physiological environments.
• Facilitates interrogation of live multicellular organisms.
• Supports long-term time-lapse studies.

Conclusions:

• Label-free intravital optical imaging is a powerful tool for basic and preclinical research.
• Its multimodal capabilities enhance data acquisition and analysis.
• It holds significant promise for future clinical applications.