Chapter 9. Intravital videomicroscopy in angiogenesis research

Area of Science:

• Vascular biology
• Biomedical imaging
• Cancer research

Background:

• Histology provides static snapshots of vasculature, limiting functional and dynamic assessments.
• Assessing tumor vasculature and therapeutic responses often relies on traditional histological methods.
• There is a need for dynamic, quantitative methods to study vascular morphology and function.

Purpose of the Study:

• To describe intravital video microscopy (IVVM) techniques for studying vascular morphology and function.
• To highlight the advantages of IVVM over static histological methods.
• To present image processing approaches for quantitative analysis of vascular dynamics.

Main Methods:

• Intravital video microscopy (IVVM) for real-time observation of vasculature in vivo.
• Video postprocessing and image analysis for quantitative data extraction.
• Assessment of morphological parameters (diameter, density, 3D geometry) and functional parameters (perfusion, flow rate, oxygen status).

Main Results:

• IVVM provides high-resolution, dynamic visualization of normal and tumor vasculature.
• Quantitative data on vascular morphology, including 3D geometry, can be extracted.
• Functional parameters like red blood cell flow and oxygen status are measurable.
• Longitudinal studies tracking vascular changes over time in individual animals are feasible.

Conclusions:

• IVVM is a powerful tool for detailed, dynamic analysis of vascular networks.
• It overcomes limitations of static histology by providing functional and longitudinal data.
• IVVM facilitates a deeper understanding of angiogenesis and vascular dynamics in various physiological and pathological conditions.