. Author manuscript; available in PMC: 2017 Jul 27.

Published in final edited form as: Echocardiography. 2017 Mar 27;34(5):690–699. doi: 10.1111/echo.13483

TABLE 2.

MDCT and 3DTEE measurements of the aortic annulus area, perimeter, and derived diameters shown along with inter-technique differences (actual values in line 3 and percent of the mean measured value in line 4). None of the inter-technique differences were statistically significant

	Area (mm²)	Perimeter (mm)	Area-derived diameter (mm)	Perimeter-derived diameter (mm)
MDCT	504±100	83±8	25±2	26±3
Semi-automated 3D analysis	498±111	80±9	25±3	25±3
Inter-technique difference	−6.6±46.4 (P=.34)	−3.0±3.9 (P<.001)	−0.2±1.2 (P=.24)	−1.0±1.3 (P<.001)
% Difference	−1±10%	−4±5%	−1±5%	−4±5%
Mitral valve software	527±111	82±9
Inter-technique difference	23±62 (P=.01)	−0.4±5.5 (P=.61)
% Difference	4±12%	−1±7%
3D planimetry	463±108
Inter-technique difference	42±66 (P<.001)
% Difference	−9±15

Data are shown in the same format as the top portion of table, but this time for two subgroups of patients according to the phase of the cardiac cycle at which their computed tomography images were acquired.

MDCT=multi-detector comuted tomography; 3DTEE=three-dimensional transesophageal echocardiography.