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Table 4 Intra- and interobserver reproducibilities for left ventricular volumes and ejection fraction by single- and four-beat three-dimensional echocardiography.

From: Three-dimensional echocardiography using single-heartbeat modality decreases variability in measuring left ventricular volumes and function in comparison to four-beat technique in atrial fibrillation

  EDV (ml) ESV (ml) EF (%)
Group A
Intraobserver variability (%)    
Four-beat full volume 4.4 5.1 3.4
Single-beat full volume 3.9 4.6 4.1
Group A
Interobserver variability (%)    
Four-beat full volume 7.3 8.5 3.9
Single-beat full volume 6.4 6.5 4.5
Group B
Intraobserver variability (%)    
Four-beat full volume 9* 11.4 8.3**
Single-beat full volume 4.5 2.9 4.8
Group B
Interobserver variability (%)    
Four-beat full volume 10.4* 15.2* 17.9**
Single-beat full volume 7.6 7.2 5.6
  1. EDV: end-diastolic volume, ESV: end-systolic volume and EF: ejection fraction, *p < 0.05 and **p < 0.001.
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