Vizzardi Enrico, D'Aloia Antonio, Rocco Elena, Lupi Laura, Rovetta Riccardo, Quinzani Filippo, Bontempi Luca, Curnis Md Antonio, Dei Cas Livio
Applied and Experimental Medicine Department, Chair of Cardiology University of Brescia, Brescia, Italy.
J Clin Ultrasound. 2012 Mar-Apr;40(3):155-66. doi: 10.1002/jcu.21871. Epub 2012 Jan 23.
Echocardiographic assessment of left atrial size from M-mode or 2D echocardiography measurements has been used in clinical and research studies for years, but its accuracy is now questioned. New techniques, such as 3D and tissue Doppler imaging, assessing velocities, strain and strain rate, provide improved prognostic value in a wide range of diseases. 2D strain imaging using speckle tracking on B-mode images may yield even better, angle-independent, results than tissue Doppler imaging-derived strain echocardiography. Finally, velocity vector imaging is a novel image analysis technique that may be used to quantify left atrial volume.
多年来，临床和研究中一直使用M型或二维超声心动图测量来评估左心房大小，但现在其准确性受到质疑。新技术，如三维和组织多普勒成像，用于评估速度、应变和应变率，在多种疾病中具有更高的预后价值。在B模式图像上使用斑点追踪的二维应变成像可能比组织多普勒成像衍生的应变超声心动图产生更好的、与角度无关的结果。最后，速度向量成像技术是一种新型图像分析技术，可用于量化左心房容积。
