For pursuing a MD in Cardiology you need a MBBS Degree. Perhaps if you are interested in this field and are doing a B.Sc, you can perhaps move abroad to pursue a Masters and a Doctoral Degree from some of the Top Global Universities in US, UK and Australia in Cardiac Technologu, Biomedical Technogy, Medical Electronics , Bioinformatics and so on. You can hence enter professional research or academia and make your own contributions in this field of research Cardiac Technology. Companies like Biocon, Microsoft, TCS Innovation, Samsung are greatly investing in todays date in Medical Electronics and Biomedical Devices.