Hello Jyotinarayan,

After doing B.Sc Computer science, you can do M.Sc radiology. But keep in mind as a select number of colleges accept that. Here is the full eligibility - 

The minimum criteria of eligibility needed to be met for admission to the course are -

10+2 qualification with Physics, Chemistry, Math and Biology with a minimum aggregate score of 40% to 60%.

B.Sc. in Medical Radiography & Imaging Technology, or B.Sc. in other/similar Applied Sciences.

Hope this helps.