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Fig. 1 | Cardiovascular Ultrasound

Fig. 1

From: Clinical value of myocardial performance index in patients with isolated diastolic dysfunction

Fig. 1

Scheme for measurement of time intervals used to calculate the tissue Doppler-derived myocardial performance index (TDI-MPI): a, time from cessation of the a’ wave to the onset of the e’ wave; b, the duration of the S wave; c, interval between the R wave and onset of the e’ wave; d, interval between the R wave and cessation of the S wave; ICT, tissue Doppler-derived isovolumetric contraction time; IVRT

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