Quantitative Assessment of Hepatic Steatosis Using Label-Free Multiphoton Imaging and Customized Image Processing...

Area of Science:

• Biomedical Imaging
• Hepatology
• Medical Diagnostics

Background:

• Nonalcoholic fatty liver disease (NAFLD) is a growing global health concern, driving significant liver-related morbidity and mortality.
• Accurate quantification of hepatic steatosis is crucial for effective diagnosis and monitoring disease progression.
• Current diagnostic methods may benefit from advanced imaging techniques for detailed pathological assessment.

Purpose of the Study:

• To evaluate multiphoton microscopy as a label-free imaging tool for nonalcoholic fatty liver disease.
• To develop image analysis algorithms for quantitative assessment of steatosis and fibrosis.
• To explore the correlation between steatosis severity and collagen deposition in liver tissue.

Main Methods:

• Utilized multiphoton microscopy, employing second harmonic generation and 2-photon excited fluorescence.
• Applied label-free imaging to visualize key pathological features in nonalcoholic fatty liver samples.
• Developed image segmentation and feature extraction algorithms for quantitative analysis and spatial distribution mapping.

Main Results:

• Multiphoton microscopy successfully visualized normal hepatocytes, hepatic steatosis, Mallory bodies, necrosis, inflammation, collagen, and microvessels.
• The developed algorithms enabled simultaneous assessment of hepatic steatosis and fibrotic changes.
• A significant correlation was found between the degree of steatosis and collagen content, indicating fibrotic changes.

Conclusions:

• Multiphoton microscopy serves as a reliable auxiliary tool for diagnosing nonalcoholic fatty liver disease.
• Quantitative analysis of steatosis and fibrosis using advanced imaging can enhance clinical understanding.
• These findings pave the way for exploring novel therapeutic targets in NAFLD management.