Please click here to obtain permission to reproduce this image.
Click on image to view larger version.
Figure 1 Methods of measurements of systolic and diastolic delays. (A) Measurement of systolic intraventricular delay. Tissue Doppler imaging recordings of the velocity curves of the septal wall (blue curve) and of the lateral wall (white curve) in a patient with severe systolic intraventricular asynchrony. The onset of each systolic velocity curve is used for measurement of systolic electromechanical delays of each ventricular wall (dotted lines). A systolic intraventricular delay of 95 ms between these two walls is calculated (pink arrow). (B) Similar measurements are performed for measurement of diastolic intraventricular delay in the same patient. The onset of each diastolic velocity curve is used for measurement of diastolic electromechanical delays of each ventricular wall (dotted lines). A diastolic intraventricular delay of 115 ms between these two walls is calculated (pink arrow).
