Details

Autor(en) / Beteiligte

• Sugeng, Lissa
• Weinert, Lynn
• Lammertin, Georgeanne
• Thomas, Patrick
• Spencer, Kirk T
• DeCara, Jeanne M
• Mor-Avi, Victor
• Huo, Dezheng
• Feldman, Ted
• Lang, Roberto M

Titel

Accuracy of mitral valve area measurements using transthoracic rapid freehand 3-dimensional scanning: comparison with noninvasive and invasive methods

Ist Teil von

• Journal of the American Society of Echocardiography, 2003-12, Vol.16 (12), p.1292-1300

Ort / Verlag

United States: Mosby, Inc

Erscheinungsjahr

2003

Quelle

MEDLINE

Beschreibungen/Notizen

• The feasibility and accuracy of direct transthoracic 3-dimensional (3D) mitral valve area (MVA) measurements obtained using freehand scanning was investigated in patients with mitral stenosis. A total of 30 patients (26 women, 4 men; aged 55 ± 13 years) underwent a 2-dimensional (2D) and Doppler study 1 hour before percutaneous balloon mitral valvuloplasty. Transthoracic freehand data were acquired using a magnetic receiver attached to a broadband transducer, gated to electrocardiography and respiration. Volumetric MVA measurements from the left ventricle and left atrium were obtained and compared with MVA measurements derived from 2D planimetry, pressure half-time, and proximal isovelocity surface area. Invasive Gorlin MVA measurements were the gold standard for comparison. In all, 29 patients (97%) had 3D data allowing MVA measurements. Direct 3D measurements from the left ventricle had the least bias (0.06 ± 0.19 cm 2) and tightest limits of agreement (−0.44 to 0.32) compared with left atrium measurements (0.17 ± 0.25 cm 2 and −0.67 to 0.33, respectively). The proximal isovelocity surface area method (bias: 0.09 ± 0.34 cm 2) was the most accurate of all 2D methods followed by pressure half-time (0.17 ± 0.36 cm 2) and planimetry (0.21 ± 0.29 cm 2). Direct 3D MVA measurements from the left ventricle using transthoracic freehand scanning are more accurate than traditional 2D methods.