Speckle Tracking Echocardiography of Atrial Function

Speckle tracking echocardiography (STE) has emerged as a non-invasive imaging modality that quantifies atrial deformation by tracking natural acoustic markers—“speckles”—within the myocardial wall. By analysing strain and strain rate throughout the cardiac cycle, STE evaluates the reservoir, conduit and booster pump phases of atrial function. Reservoir strain reflects atrial filling during ventricular systole; conduit strain indicates passive emptying in early ventricular diastole; and booster pump strain measures active atrial contraction contributing to late ventricular filling. STE enables the detection of subtle functional impairment before volumetric changes occur, offering enhanced risk stratification across a spectrum of clinical settings, including atrial fibrillation, heart failure and cardiomyopathies. Its application extends to both left and right atrial assessment, facilitating comparisons of chamber interplay under physiological stress, after revascularisation or in systemic disease. As STE is widely available on standard echocardiography platforms, it lends itself to serial monitoring and integration into clinical workflows, promoting early intervention and personalised management of atrial pathology.

Research from Nature Portfolio

A large community-based study established sex-specific reference ranges for right atrial dimensions indexed to body height, revealing significant correlations with body mass index, chronic heart failure, coronary artery disease and atrial fibrillation. Individuals with atrial volumes outside these normal limits faced a 1.7-fold increase in long-term mortality, underscoring the prognostic weight of atrial remodelling in the general population. In parallel, a comparative analysis in healthy volunteers demonstrated that right atrial reservoir and conduit strain by cardiovascular magnetic resonance feature tracking closely align with two-dimensional STE measures, with STE offering robust reproducibility. This cross-modality validation supports the transferability of atrial strain metrics between imaging techniques, bolstering confidence in STE as a reliable tool for both research and clinical practice.

Speckle Tracking Echocardiography of Atrial Function publication trend

The graph below shows the total number of articles in speckle tracking echocardiography of atrial function across all publications each year (not limited to Nature Index journals).

Technical terms

Speckle tracking echocardiography (STE): An imaging technique that follows natural acoustic markers within the myocardium to quantify deformation.

Strain: Percentage change in myocardial segment length relative to its resting length, reflecting tissue deformation.

Strain rate: Speed at which myocardial deformation occurs, usually expressed per second.

Reservoir phase: Period during ventricular systole when atrial chambers store incoming blood and exhibit positive strain.

Conduit phase: Early diastole interval when atria passively transfer blood to ventricles, associated with negative strain changes.

Booster pump phase: Late diastole active atrial contraction that augments ventricular filling, represented by additional strain peaks.

Cardiovascular magnetic resonance feature tracking (CMR-FT): An analogous technique to STE applied to magnetic resonance images for myocardial deformation analysis.

References

1. Incremental Value of Right Atrial Strain Analysis to Predict Atrial Fibrillation Recurrence After Electrical Cardioversion. Journal of the American Society of Echocardiography (2023).
2. Right Atrial Deformation Using Cardiovascular Magnetic Resonance Myocardial Feature Tracking Compared with Two-Dimensional Speckle Tracking Echocardiography in Healthy Volunteers. Scientific Reports (2020).
3. Right atrium size in the general population. Scientific Reports (2021).
4. The Added Value of Advanced Echocardiography for the Morpho-Functional and Prognostic Evaluation of the Right Heart in Dilated Cardiomyopathy: Do Not Forget about the Right Atrium. Journal of Clinical Medicine (2024).