Tissue tracking allows rapid and accurate visual evaluation of left ventricular function.

AIMS To evaluate the ability of tissue tracking for rapid assessment of left ventricular function by determination of the systolic mitral annular displacement. Tissue tracking is a new echocardiographic modality based on Doppler Tissue imaging allowing rapid visual assessment of the systolic baso-apical displacement of each myocardial segment in apical views by a graded colour display. METHODS AND RESULTS We studied 90 patients (69 male, age 60.4 +/- 10.1 years) with different left ventricular function (25 subjects with normal left ventricular function, 25 patients with homogeneous depression of left ventricular function and 40 patients with prior myocardial infarction). Systolic mitral annular displacement was determined by tissue tracking and M-mode echocardiography. Apical two-, three- and four-chamber views were used to determine the mitral annular displacement of six sites. Left ventricular ejection fraction was determined by two-dimensional echocardiography using Simpson's rule. Tissue tracking was possible in all patients. In the 50 patients with normal left ventricular function or homogeneous depression of left ventricular function, mean mitral annular displacement correlated closely with mitral annular displacement determined by M-mode (r=0.99,P <0.001) and with left ventricular ejection fraction (r=0.97, P<0.001). Left ventricular ejection fraction < or = 30% could be predicted with a sensitivity of 98% and a specificity of 78% using a cut-off value of 4.8mm for the mitral annular displacement determined by tissue tracking. In patients with prior myocardial infarction correlation between the mean mitral annular displacement and left ventricular ejection fraction was lower (r=0.87, P<0.001). CONCLUSION Systolic mitral annular displacement determined by tissue tracking correlates closely with mitral annular displacement determined by M-mode and with left ventricular ejection fraction. Thus, tissue tracking allows rapid semiquantitative evaluation of global left ventricular function by assessment of systolic mitral annular displacement.

[1]  B. Wandt,et al.  The relation between ejection fraction and mitral annulus motion before and after direct-current electrical cardioversion. , 2000, Clinical physiology.

[2]  M. Degertekin,et al.  A New Echocardiographic Formula to Calculate Ejection Fraction by Using Systolic Excursion of Mitral Annulus , 1995, Angiology.

[3]  M. Alam,et al.  Haemodynamic significance of the atrioventricular plane displacement in patients with coronary artery disease. , 1992, European heart journal.

[4]  S. Lundbäck,et al.  Cardiac pumping and function of the ventricular septum. , 1986, Acta physiologica Scandinavica. Supplementum.

[5]  M. Alam,et al.  Effects of acute myocardial infarction on the displacement of the atrioventricular plane: an echocardiographic study , 1989, Journal of internal medicine.

[6]  N. Reichek,et al.  Recommendations for quantitation of the left ventricle by two-dimensional echocardiography. American Society of Echocardiography Committee on Standards, Subcommittee on Quantitation of Two-Dimensional Echocardiograms. , 1989, Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography.

[7]  M. Alam,et al.  Atrioventricular plane displacement and left ventricular function. , 1992, Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography.

[8]  S D Moulopoulos,et al.  The role of mitral annulus motion in left ventricular function. , 1992, Acta cardiologica.

[9]  N. Schiller,et al.  Descent of the base of the left ventricle: an echocardiographic index of left ventricular function. , 1989, Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography.

[10]  M. Jensen-Urstad,et al.  Comparison of different echocardiographic methods with radionuclide imaging for measuring left ventricular ejection fraction during acute myocardial infarction treated by thrombolytic therapy. , 1998, The American journal of cardiology.

[11]  B. Wandt,et al.  The relation between mitral annulus motion and left ventricular ejection fraction in atrial fibrillation. , 2000, Clinical physiology.