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Automated mitral annular tracking: a novel method for evaluating mitral annular motion using two-dimensional
Yoko Eto1, Hirotsugu Yamada, Joon-Han Shin
1Department of Cardiovascular Medicine, Cleveland Clinic Foundation, Cleveland, OH 44195, USA.
Summary
A new automated mitral annular tracking method accurately assesses left ventricular (LV) function using 2D echocardiography. This technique shows promise for clinical evaluation of mitral annular motion in patients with LV dysfunction.
Area of Science:
- Cardiology
- Medical Imaging
- Biomedical Engineering
Background:
- Assessing left ventricular (LV) function is crucial in cardiology.
- Traditional methods for evaluating mitral annular motion can be limited.
- High frame rate 2D echocardiography offers potential for advanced analysis.
Purpose of the Study:
- To develop and validate an automated mitral annular tracking (AMAT) method.
- To assess the feasibility and accuracy of AMAT in healthy volunteers and patients with LV dysfunction.
- To evaluate the correlation between mitral annular excursion and LV ejection fraction.
Main Methods:
- Digital processing of high frame rate cineloop images from 2D echocardiography.
- Validation in 11 healthy volunteers and 16 patients with LV dysfunction.
- Comparison with 3D echocardiography measurements and correlation with LV ejection fraction.
Main Results:
- AMAT showed good agreement with 3D echocardiography for mitral annular excursion.
- Mitral annular excursion correlated significantly with LV ejection fraction.
- Patients with LV dysfunction exhibited reduced longitudinal but preserved radial annular excursion compared to controls.
Conclusions:
- The novel AMAT method is clinically feasible.
- AMAT has the potential to comprehensively quantify mitral annular motion.
- This technique can aid in evaluating LV function in clinical settings.