After intermediate (12th), you cannot directly do a Diploma in Anaesthesia meant for doctors. However, you can opt for a Diploma or B.Sc. in Anaesthesia Technology, which are paramedical courses. These prepare you to assist doctors and anaesthesiologists in operation theatres. It's a good career option if you're interested in the medical field and want to start working early. The B.Sc. course offers better job prospects in the long run compared to the diploma.