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Table 2 Inter- and intra-observer variability for TomTec and 4DLVQ.

From: Semi-automated quantification of left ventricular volumes and ejection fraction by real-time three-dimensional echocardiography

 

Inter-observer

Intra-observer

 

Abs.

%

Abs.

%

EDV

    

   4DLVQ [ml]

9.0 ± 5.9

5.9 ± 3.7

7.5 ± 6.2

5.8 ± 4.5

   TomTec [ml]

17* ± 6.3

11 ± 4.5

7.7 ± 7.3

5.5 ± 5.2

ESV

    

   4DLVQ [ml]

5.0 ± 3.6

5.6 ± 4.0

5.5 ± 5.6

8.0 ± 7.6

   TomTec [ml]

12* ± 7.7

15 ± 8.8

5.0 ± 5.9

6.0 ± 7.3

EF

    

   4DLVQ [%]

2.7 ± 2. 8

5.9 ± 5.8

3.0 ± 2.7

7.1 ± 6.5

   TomTec [%]

3.0 ± 2.1

8.5 ± 6.5

2.1 ± 2.0

4.9 ± 4.4

  1. * Significantly different from 4DLVQ (p < 0.05). EDV, end-diastolic volume; ESV, end-systolic volume; EF, ejection fraction. Abs. values are population mean ± SD of absolute differences between repeated measurements. % values are population mean ± SD of absolute differences of repeated measurements normalized by the average of the two repeated measurements.