Nonlinear optical microscopy in decoding arterial diseases.

Area of Science:

• Biomedical optics
• Pathology
• Materials science

Background:

• Arterial disease understanding relies on conventional histology.
• Conventional methods require extensive tissue preparation and staining.
• Atherosclerosis involves extracellular matrix pathological changes.

Purpose of the Study:

• To review recent advancements in nonlinear optical microscopy (NLOM) for arterial disease imaging.
• To highlight NLOM's potential in studying atherosclerosis progression.
• To showcase label-free imaging capabilities for minimally perturbed tissue analysis.

Main Methods:

• Review of nonlinear optical microscopy techniques: second-harmonic generation, two-photon excited fluorescence, and coherent Raman scattering.
• Focus on label-free, three-dimensional imaging of bulk artery tissue.
• Analysis of applications in visualizing extracellular matrix changes.

Main Results:

• NLOM techniques provide rapid, high-resolution 3D imaging of arterial tissue.
• Label-free imaging allows direct visualization of pathological changes without staining.
• NLOM minimizes sample perturbation, preserving native tissue architecture for study.

Conclusions:

• NLOM represents a significant advancement for pathological imaging of arterial diseases.
• These techniques offer a powerful, minimally invasive approach to study atherosclerosis.
• Future research can leverage NLOM for deeper insights into vascular diseases.