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Table 2 Repeated 3D volumetric measurements and 2D calculated volumes of left atrial human cadaveric casts

From: Validation of 3D echocardiographic volume detection of left atrium by human cadaveric casts

cast no.

3DE volume: GE 4D LVQ

3DE volume: TomTec LV

2DE volume

meas. 1 (ml)

meas. 2 (ml)

difference (ml)

meas. 1 (ml)

meas. 2 (ml)

difference (ml)

meas. 1 (ml)

meas. 2 (ml)

difference (ml)

1

36

35

−1

36

40

4

35

35

0

2

94

88

−6

103

102

−1

106

103

−3

3

43

44

1

50

59

9

55

66

11

4

43

41

−2

42

40

−2

36

33

−3

5

45

47

2

50

46

−4

40

48

8

6

68

57

−11

70

67

−3

68

68

0

7

62

60

−2

68

72

4

76

84

8

mean (95% CI)

55.9

53.1

−2.7 (−6.8–1.4)

59.9

60.9

1.0 (−3.4–5.4)

59.4

62.4

3.0 (−2.4–8.4)

SD

20.3

17.7

4.5

22.8

22.2

4.8

26.0

25.8

5.8

range

36–94

35–88

−11–2

36–103

40–102

−4–9

35–106

33–103

−3–11

LOA

  

−11.5–6.0

  

−8.3–10.3

  

−8.4–14.4

r

0.982, p = 0.0001

 

0.978, p = 0.0001

 

0.975, p = 0.0002

 

ICC (95% CI)

0.967 (0.819–0.994), p = 0.00003

0.980 (0.894–0.996), p = 0.00001

0.972 (0.857–0.995), p = 0.00002

  1. 95% CI – 95% confidence interval, 2DE volume – volume calculated by 2D echocardiographic biplane area-length method, 3DE volume: GE 4D LVQ and 3DE volume: TomTec LV – 3D echocardiographic volume measured by GE 4D LVQ and TomTec 4D LV-Function softwares, respectively, ICC – intraclass correlation coefficient, LOA – limits of agreement defined as mean ± 1.96 SD, meas. 1 and meas. 2 ¬ first and repeated measurement, r – Pearson correlation coefficient for meas. 1 and meas. 2, SD – standard deviation