Summary

Conventional TTE has been only suboptimally visualize the LAA. However,with the advent of TDI technique , the cardiac function is more accurately evaluated ( Carrerj et al ., 2002).

The advantage of TDI is that it is ahigh amplitude signal with high sgnal-to-noise ratio and relatively easily detected from the chest wall ( Uretsky et al ., 2009).

Thus the purpose of this study was to assess LAA function during TTE and TEE by TDI. For this purpose, fifty patients with cerebrovascular stroke were evaluated using TDI through TTE & TEE .Twenty-five patients were in sinus rhythm and an-other twenty-five patients were in AF.

There was a strong correlation between LAA-AM on TEE and TTE parasternal short-axis view ( r = 0.917 , p < 0.001) and apical two-chamber view ( r = 0.911 , p < 0.001). Table (5) Fig-ure (28,29)

The LAA emptying velocity on TEE was also strongly correlated with LAA AM velocity obtained by TTE ; in apical two-chamber view , the (r= 0.913 , p