Single-beat 3DE may be an accurate method for RV volume and functional assessment.
It can be especially useful in patients with dilated right ventricles (i.e., those with severe TR or ASDs).
It is reproducible (ICC > 0.95 for volume and EF for inter- and intraobserver variability).
Certain measurement errors may be dependent on rhythm status (especially atrial fibrillation).
Accordingly, care is necessary when interpreting the results of sb3DE in patients with arrhythmia.