Table 1 3DE volumetric measurements and 2DE calculated volumes of left atrial human cadaveric casts in comparison to their true volumes
From: Validation of 3D echocardiographic volume detection of left atrium by human cadaveric casts
3DE volume: GE 4D LVQ | 3DE volume: TomTec LV | 2DE volume | |||||
|---|---|---|---|---|---|---|---|
cast no. | true volume (ml) | measured volume (ml) | difference to true volume (ml) | measured volume (ml) | difference to true volume (ml) | calculated volume (ml) | difference to true volume (ml) |
1 | 38 | 36 | −2 | 36 | -2 | 35 | −3 |
2 | 94 | 94 | 0 | 103 | 9 | 106 | 12 |
3 | 51 | 43 | −8 | 50 | −1 | 55 | 4 |
4 | 43 | 43 | 0 | 42 | − 1 | 36 | −7 |
5 | 44 | 45 | 1 | 50 | 6 | 40 | −4 |
6 | 58 | 68 | 10 | 70 | 12 | 68 | 10 |
7 | 68 | 62 | −6 | 68 | 0 | 76 | 8 |
mean (95% CI) | 56.6 | 55.9 | −0.7 (−6.1–4.6) | 59.9 | 3.3 (−1.9–8.5) | 59.5 | 2.9 (−4.0–9.9) |
SD | 19.4 | 20.3 | 5.8 | 22.8 | 5.6 | 26.0 | 7.5 |
range | 38–94 | 36–94 | −8–10 | 36–103 | −2–12 | 35–106 | −7–12 |
LOA | −12.1–10.6 | −7.8–14.4 | −11.9–17.6 | ||||
r | 0.959 (p = 0.001) | 0.977 (p = 0.0002) | 0.988 (p = 0.00003) | ||||