文摘
Background Two commercial software systems have become available for quantitation of mitral leaflet and annulus geometry based on three-dimensional (3D) transesophageal echocardiographic (3DTEE) images. The aim of this study is to investigate the accuracy and compatibility of the three-dimensional (3D) measurements by Real View? and MVQ?. Methods 3DTEE images were obtained from phantom models with saddle-shaped annulus of mitral valve prolapse and mitral valve tenting. From reconstructed 3D data, prolapse and tenting volume were calculated by both Real View? and MVQ? and compared with the actual volume. Results The volume of the phantom models with saddle-shaped annulus measured by Real View? (tenting r?=?0.99, prolapse r?=?0.99) and MVQ? (tenting r?=?0.99, prolapse r?=?0.99) showed good agreement with the actual volume. However, significant difference between Real View? and MVQ? was observed in the result of quantification (tenting 2.27?±?1.5?ml versus 2.53?±?1.6?ml, prolapse 2.55?±?1.7?ml versus 2.31?±?1.6?ml, both P?<?0.05). Conclusions Although the 2 commercially available systems allow accurate quantitative measurements of the 3D volume, discrepancy in the quantified value as a result of differences in the estimation of annular level is observed. Therefore, we should take into account the characteristics of each software when interpreting analytical results.