1. Dr K K Aggarwal, First Indian to have chapters in first text book of Color Doppler Echocardiography 2. Clot Dissolving Therapy in India 3. Dr KK Aggarwal First Indian Doctor to have a Chapter in First Text Book on Contrast Electrocardiography. 4. Dr KK Aggarwal, First Indian to Demonstrate Coronary Artery Flow Using Contrast Trans Esophageal Echocardiography.