1. Vinereanu D, Khokhar A, Fraser AG (1999) Reproducibility of pulsed wave tissue Doppler echocardiography. J Am Soc Echocardiogr 12:492–499
2. Ho CY, Solomon SD (2006) A Clinician’s Guide to Tissue Doppler Imaging. Circulation 113:e396–e398
3. Tekten T, Onbasili A, Ceyhan C, Unal S, Pınar A (2003) Tissue Doppler myocardial Performance index. Türk Kardiyol Derneği 31:262–269
4. Lakoumentas JA, Panou FK, Kotseroglou VK, Aggeli KI, Harbis PK (2005) The Tei index of myocardial performance: applications in cardiology. Hellenic J Cardiol 46:52–58
5. Tei C, Ling LH, Hodge DO et al (1995) New index combined systolic and diastolic myocardial performance: a simple and reproducible measure of cardiac function—a study in normals and dilated cardiomyopathy. J Cardiol 26:357–366