Dr. Supriya Mallick [M.D, D.N.B] completed his training in radiation oncology from All India institute of Medical Sciences, New Delhi. He is now working as assistant professor, department of Radiation Oncology, National Cancer Institute-India (NCI-India). He has more than 100 peer reviewed publications and has delivered oral and poster presentations in numerous international meetings. He has published numerous original articles and meta- analysis of various tumors of the brain and spine. He is also conducting various trials in the field of neurooncology. He has also contributed chapters to many text books in radiation oncology.Dr Prashanth Giridhar is Radiation Oncologist by training and is currently working as Senior research Associate at National cancer Institute, Jhajjar, AIIMS, New Delhi. Dr Prashanth has done is MBBS degree from JIPMER and then completed post graduation in AIIMS, New Delhi. He is a very refined researcher and has many publications inJournal of international reputation to his credit.Prof Goura K Rath completed his training in radiation oncology from All India institute of Medical Sciences, New Delhi. He is currently chief of B.R. Ambedkar Institute-Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi. He has more than 250 peer reviewed publications and is the recipient Doctor K.M. Rai Memorial Oration award. He is also one of the editors of the text book “Text Book of Radiation Oncology: Principles and Practice”, Elsevier. 2003 and is also author of many chapters in several textbooks in the field of radiation oncology.