Processing and analysis of cardiac optical mapping data obtained with potentiometric dyes

Area of Science:

• Cardiovascular Research
• Biomedical Imaging
• Electrophysiology

Background:

• Optical mapping has emerged as a vital technique in cardiac electrophysiology over the last two decades.
• Current research faces challenges due to a lack of standardized methods for processing and analyzing optical mapping data.
• The choice of data processing techniques significantly influences study outcomes and interpretations.

Purpose of the Study:

• To provide a comprehensive overview of optical mapping data processing techniques.
• To describe common analytical methods used in cardiac optical imaging.
• To emphasize the importance of appropriate data handling for accurate research findings.

Main Methods:

• Detailed explanation of image segmentation, spatial filtering, temporal filtering, and baseline drift removal.
• Description of common analyses: activation mapping, action potential duration mapping, repolarization mapping, and conduction velocity measurements.
• Discussion of techniques for analyzing complex arrhythmias, including dominant frequency and phase mapping.

Main Results:

• The review systematically outlines the steps involved in optical mapping data processing.
• It covers a range of analytical approaches applicable to cardiac optical imaging data.
• The importance of method selection for data integrity is underscored.

Conclusions:

• Standardized processing and analysis are essential for reliable optical mapping studies.
• Understanding these methods is critical for researchers in cardiac electrophysiology.
• This review serves as a guide to navigating the complexities of optical mapping data analysis.