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[Usefulness of transthoracic freehand three-dimensional echocardiography for the evaluation of mitral valve prolapse].

Abstract：

BACKGROUND:Two-dimensional (2D) echocardiography is routinely used in evaluating patients with mitral valve prolapse but requires a systematic examination for accurate assessment of the involved lesion of mitral valve prolapse, because the sonographer is required to mentally reconstruct two-dimensional images into three dimensions. Recently, freehand three-dimensional (3D) echocardiography has been introduced in the clinical setting for three-dimensional visualization of the mitral valve apparatus. OBJECTIVES:To evaluate the accuracy of the freehand 3D echocardiography system in assessing the involved lesion in patients with mitral valve prolapse. METHODS:This study consisted of 25 consecutive patients (15 men, 10 women, mean age 55 +/- 17 years) with mitral valve prolapse who were scheduled for 3D echocardiography. Mitral valve was reconstructed in the view from the left atrium (surgeon's view) by 3D echocardiography. The location of the involved lesion in mitral valve was classified as the medial, middle and lateral portions of the anterior leaflet, and the medial, middle and lateral scallops of the posterior leaflet, respectively. The results by 3D echocardiography were compared with those of 2D echocardiography as the clinical standard. RESULTS:An adequate three-dimensional display of the entire mitral valve for analysis of the involved lesion could be reconstructed in all 25 patients (feasibility 100%). The sensitivity of 3D echocardiography for detecting the lesions at the medial, middle and lateral portions of the anterior leaflet was 80%, 100% and 75%, and the medial, middle and lateral scallops of the posterior leaflet was 100%, 100% and 0%, respectively. The specificities were 100% at all locations in the mitral valve. CONCLUSIONS:These results indicate that freehand 3D echocardiography is useful for assessment of the involved lesion of the mitral valve in patients with mitral valve prolapse.

journal_name

J Cardiol

journal_title

Journal of cardiology

authors

Abo K,Hozumi T,Fukuda S,Matsumura Y,Matsui M,Fujioka K,Nakao M,Takemoto Y,Watanabe H,Muro T,Takeuchi K,Yoshikawa J

subject

Has Abstract

pub_date

2004-01-01 00:00:00

pages

17-22

issue

1

eissn

0914-5087

issn

1876-4738

journal_volume

43

pub_type

临床试验,杂志文章

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