Hello! 

BSc radiology is 3 year long paramedical course. If you choose a diploma, it is of 2 years. There are certificate courses also in this field. There are some good universities in south india (tamil nadu and kerela) which provide a distance education course also in this field.

The total course fee generally ranges from 1.5-10 lakhs.

Most institutes have a separese entrance test for these courses. Some good institutes are AIIMS Delhi, Tata Memorial Center Mumbai and Rajeev Gandhi University of Medical Science Bangalore.

If you have passed the diploma course, you can get lateral entry in a few colleges also.