Quantification of Mitral Valve Apparatus by Three-dimensional Transesophageal Echocardiography: In vitro Validation Study Comparing Two Different Analysis Systems

Overview

Journal J Echocardiogr

Specialties Cardiology & Vascular Diseases
Radiology

Date 2016 Jun 10

PMID 27277289

Citations 1

Authors

Ken Saito

Hiroyuki Okura

Nozomi Watanabe

Koichiro Imai

Tomoko Tamada

Terumasa Koyama

Akihiro Hayashida

Yoji Neishi

Takahiro Kawamoto

Kiyoshi Yoshida

Affiliations

Soon will be listed here.

Abstract

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.

Citing Articles

Predictors and prognostic impact of secondary mitral regurgitation in myocardial infarction with preserved ejection fraction.

Nogi M, Okura H, Kataoka T, Yoshida K J Echocardiogr. 2019; 18(1):67-72.

PMID: 31696389 DOI: 10.1007/s12574-019-00451-y.

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