Cell spreading analysis with directed edge profile-guided level set active contours

Area of Science:

• Cell Biology
• Biophysics
• Microscopy Image Analysis

Background:

• Cell adhesion and spreading are vital for cell motility, growth, and tissue organization.
• Measuring cell spreading dynamics is key to understanding cell mechanosensitivity to stimuli like substrate rigidity.
• Accurate quantification of cell parameters across large cell populations is necessary for detecting subtle treatment effects.

Purpose of the Study:

• To develop an improved method for accurate cell boundary segmentation in phase contrast microscopy.
• To enhance the analysis of cell spreading dynamics and mechanosensitivity.
• To enable robust statistical analysis of subtle cellular differences.

Main Methods:

• A modified geodesic active contour level set method was developed.
• The method directly utilizes the halo effect observed in phase contrast microscopy.
• Contour evolution is guided by perpendicular edge profiles for accurate boundary convergence.

Main Results:

• The approach accurately estimates cell boundaries, even for complex cell shapes.
• Segmentation accuracy was validated against manual ground truth on bovine aortic endothelial cells.
• The method demonstrated reliable performance across a wide range of cell sizes and shapes.

Conclusions:

• The proposed method offers a significant improvement for cell boundary segmentation in microscopy.
• Accurate cell parameter measurements facilitate deeper insights into cell mechanosensitivity and behavior.
• This technique supports more reliable statistical analysis in cell biology research.