TABLE 4.

Results of reproducibility analysis of MDCT and 3DTEE measurements of the aortic annulus area, perimeter, and derived diameters obtained in a subgroup of 10 study patients

	Area (mm2)	Perimeter (mm)	Area-derived diameter (mm)	Perimeter-derived diameter (mm)
MDCT
Inter-observervariability (%) [and ICC]	4.6±2.5 [.83]	3.2±1.6 [.74]	2.3±1.3 [.83]	3.2±1.6 [.74]
Intra-observer variability (%) [and ICC]	4.6±3.5 [.80]	1.9±2.1 [.83]	2.3±1.7 [.80]	1.9±2.1 [.83]
Semi-automated 3D analysis
Inter-observer variability (%) [and ICC]	8.4±4.5 [.70]	4.2±2.2 [.72]	4.1±2.2 [.72]	4.2±2.1 [.71]
Intra-observer variability (%) [and ICC]	4.3±5.6 [.83]	2.2±2.5 [.85]	2.1±2.9 [.81]	2.2±2.5 [.85]
Mitral valve software
Inter-observer variability (%) [and ICC]	10.5±7.0 [.64]	5.7±3.5 [.61]
Intra-observer variability (%) [and ICC]	13.8±9.4 [.31]	7.8±6.8 [.38]
3D planimetry
Inter-observer variability (%) [and ICC]	8.0±6.6 [.80]
Intra-observer variability (%) [and ICC]	5.7±3.4 [.89]

Data for inter- and intra-observer variability are shown as absolute differences between pairs of repeated measurements in percent of their mean value.

MDCT=multi-detector comuted tomography; 3DTEE=three-dimensional transesophageal echocardiography; ICC=intra-class correlation coefficient.