Background: The main goal in the management of ST segment elevation myocardial infarction (STEMI) is an early restoration of coronary artery flow in order to preserve viable myocardium. Doppler tissue imaging (DTI) is a simple modality that measures tissue velocity during cardiac cycle. Objective: To assess the role of DTI in evaluation of LV recovery after PCI. Methods: Fifty patients were included in this study with STEMI, and were candidate for primary PCI. Cardiac enzymes and ECG were done during admission and 12 hours after PCI for assessment of noninvasive criteria for reperfusion. Echocardiography with DTI was performed for all patients to assess LV recovery and remodeling at baseline and one month after PCI. Primary PCI was performed and patients were divided into two groups: Group A with good reperfusion, and group B with poor reperfusion. Results : In patients of group A (78%), there was a statistically significant improvement of the LV EF more than 5% one month after primary PCI (LV recovery) (p