Current state of three-dimensional myocardial strain estimation using echocardiography

Area of Science:

• Cardiology
• Medical Imaging
• Biomedical Engineering

Background:

• Advancements in ultrasound technology enable real-time 3D volumetric imaging.
• Three-dimensional (3D) myocardial strain assessment using 3D speckle-tracking echocardiography (3D-STE) is increasingly available.
• 3D-STE methods aim to improve the understanding of regional myocardial mechanics for clinical applications.

Purpose of the Study:

• To review and compare current 3D strain estimation approaches in echocardiography.
• To highlight the differences and similarities among various 3D speckle-tracking echocardiographic methods.
• To assess the current validation status of these 3D strain estimation techniques.

Main Methods:

• Review of existing literature on 3D speckle-tracking echocardiographic methods.
• Analysis of algorithms used for 3D myocardial strain estimation.
• Evaluation of validation studies for different 3D-STE techniques.

Main Results:

• Currently available 3D-STE methods utilize diverse algorithms.
• These algorithmic differences lead to significant variations and lack of interchangeability between methods.
• Validation status varies across different 3D strain estimation approaches.

Conclusions:

• Individual validation of each 3D speckle-tracking echocardiographic method is crucial before clinical implementation.
• Understanding the differences between methods is essential for appropriate application.
• Further validation efforts are needed to ensure the reliability of 3D myocardial strain analysis.