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Table 6 Intra-observer variability observer one

From: Quantification of left ventricular volumes and function in anesthetized beagles using real-time three-dimensional echocardiography: 4D-TomTec™ analysis versus 4D-AutLVQ™ analysis in comparison with cardiac magnetic resonance imaging

Variable

First Observer

First Observer

Relative Difference (%)

P-Values

Bias

ICC

First Measurement

Second Measurement

4D-Auto-LVQ

      

EDV (ml)

30.0

30.1

−0.6

0.8071

0.16

0.956

ESV (ml)

13.5

13.8

−2.4

0.4085

0.34

0.968

SV (ml)

16.5

16.3

1.0

0.7933

0.19

0.907

EF (%)

55.3

54.2

2.0

0.3992

1.11

0.936

TomTec

      

EDV (ml)

31.8

31.7

0.1

0.9600

0.03

0.967

ESV (ml)

14.9

14.7

1.2

0.9698

0.15

0.954

SV (ml)

16.9

17.0

−0.8

0.8566

−0.15

0.892

EF (%)

53.4

53.7

−0.5

0.9027

−0.27

0.833

  1. Results of statistical comparisons between repeated measurements by observer one at an interval of more than 2 weeks of the different three-dimensional echocardiographic based volumetric analyzing software programs (4D-TomTec™, 4D-AutoLVQ™) used to calculate left ventricular end-diastolic (EDV), end-systolic volume (ESV), stroke volume (SV) and ejection fraction (EF) in 10 healthy anesthetized beagles