Brain tumours are the commonest solid tumours in children and with appropriate treatment, nearly half of them achieve long term cure. Radiotherapy is essential in the management of a majority of these tumours. Conventional radiotherapy alone or in combination with surgery and/or chemotherapy in tumours such as optic gliomas, hypothalamic gliomas, craniopharyngiomas, germ cell tumours, and other low grade tumours achieves excellent long term control rates ranging from 70 to 95%. However, while the tumour control has been effective, there have been concerns about treatment related morbidity.