As per the National Medical Council (NMC), 594 MD Radiation Oncology PG seats are spread out in different states of India.usually the seats gets filled by inicet upto rank 5k in different institute but if there is any seat vacant you can get spot admission.

Fir spot admission youu may need to attend counseling at the institution and bring certain documents, such as your class 10 and 12 certificates, passport-size photo, and admit card.

You can get admission details here

https://medicine.careers360.com/exams/ini-cet