After 12th You can pursue diploma courses, bachelors course and certification courses in the field of radiology as per your interest. The courses offered in radiology are mentioned below:

If you are interested in Graduation programmes then you can go-

Bachelors Courses  3 years

    B.Sc in Radiography
    B.Sc (Hons.) in Medical Radiotherapy Technology

If you are interested in Diploma courses then you can go-

Diploma Courses  2 years

    Diploma in Radiography and Radiotherapy
    Diploma in Radio-diagnostic Technology

If you are interested in Certificate courses then you can go-

Certificate Courses:

    Certificate in Radiography
    Certificate in Radiology Assistant
    Certificate in Radiography Diagnostic

Good Luck!