Abstract
Full volume 3‐dimensional echocardiography (3DE) may be advantageous for delineation of semilunar valve opening and annulus over 2‐dimensional echocardiography (2DE) because it can visualize the valve's complete structure along with real‐time motion. To evaluate this, we analyzed 3DE data with TomTec 4D Cardioview CAP in 43 consecutive patients (age; 53±14, 21 females, data are mean±SD) who underwent transthoracic 3DE imaging acquisition at standard left parasternal (PS) and apical windows (AP) and whose 2DE acoustic windows were good to excellent. In 3DE, the aortic valve (AV) annulus diameter (AVD) was successfully quantitated in both PS and AP for nearly all patients (100% and 95%, % cases). In PS, the 3DE AV opening area (AVA) was more frequently quantitated (74%) than 2DE AVA (49%, P<0.05 with a chi‐square test). Among cases quantifiable with 3DE, both AVD and AVA in PS showed an excellent correlation with that in AP (R=0.814 and R=0.903, P<0.01 for both with a Pearson correlation test). 3DE AVD also showed significant correlations with 2DE AVD (R=0.769, n=40 in PS, P<0.01). In PS, 3DE AVA correlated significantly with 2DE AVA (R=0.616, n=16, P<0.05). Pulmonic valve annulus diameter and opening area were poorly quantifiable in both PS and AP in 3DE (49% and 9%; 9% and 2%). Our results suggest that 3DE quantification of AV structure is feasible and robust and may provide better assessment of AVA than 2DE.
Published Version
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