Hello Pretha,

Best institutions to take DNB Radiology in South India are-

• Kanchi Kamakoti Childs Trust Hospital, Chennai
• Meenakshi Mission Hospital & Research Centre, Madurai.
• Masonic Medical Centre for Children, Coimbatore
• Kovai Medical Centre, Coimbatore
• Radio Diagnosis Lourdes Hospital, Ernakulam
• Rajagiri Hospital, Aluva

I hope it helps

Thank you