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Table 4 Intra-observer variability of three-dimensional echocardiography

From: Quantification of right ventricular volume in dogs: a comparative study between three-dimensional echocardiography and computed tomography with the reference method magnetic resonance imaging

Variable

First measurement (ml)

Second measurement (ml)

Relative difference (%)

Group comparison (P-Values)

Correlation coefficient (R)

EDV

25.64

26.05

1.60

0.695

0.81

ESV

13.38

13.84

3.45

0.625

0.95

SV

12.22

12.22

0.00

0.922

0.58

EF

48.47

48.09

0.80

0.846

0.84

  1. Comparison of right ventricular function parameters measured twice at least two weeks apart with three-dimensional echocardiography by the same observer (end-diastolic volume = EDV, end-systolic volume = ESV, ejection fraction = EF, stroke volume = SV).