Image Data Analysis for Quantifying Scar Transmurality in MRI phantoms for Cardiac Resynchronisation Therapy

Area of Science:

• Cardiology
• Medical Imaging
• Biomedical Engineering

Background:

• Implantable cardiac device use, including cardiac resynchronisation therapy (CRT) for heart failure, has risen significantly.
• Optimal pacemaker lead placement is patient-specific, yet current empirical methods often fail in myocardial tissue with transmural scar.
• Accurate measurement of scar transmurality in the left ventricle (LV) is limited by few studies and lack of validated techniques.

Purpose of the Study:

• To present and validate an image analysis technique for computing scar transmurality from late-gadolinium enhancement MRI.
• To assess the accuracy of scar transmurality measurement in the context of CRT image guidance.

Main Methods:

• Development of an image analysis technique to compute scar transmurality from late-gadolinium enhancement MRI data.
• Validation of the developed technique using phantoms under a CRT image guidance system.

Main Results:

• The presented image analysis technique can accurately measure scar transmurality in specific scenarios.
• Phantom validation demonstrated the importance and efficacy of the measurement technique.

Conclusions:

• Scar transmurality can be precisely quantified using the developed MRI-based image analysis technique.
• Phantom validation is essential for ensuring the accuracy of scar transmurality measurements in clinical applications like CRT.