The goal of radiotherapy (RT) in the management of malignant tumours is selective killing of cancer cells and avoiding surrounding normal tissues from radiation damage. CT based, three-dimensional (3D) conformal treatment planning is a standard technique both in teletherapy and brachytherapy. Further optimisation of dose distribution is possible using intensity modulated radiotherapy (IMRT). Image guided radiotherapy (IGRT) is a new technique to overcome daily set-up errors and internal organ movements during the delivery of RT. Using different imaging modalities (e.g. digitally reconstructed radiographs, US, megavoltage and kilovoltage cone-beam CT) the additional margin around the clinical target volume (CTV) can be decreased resulting a significantly smaller planning target volume (PTV). Consequently, dose to critical structures can be decreased and/or total tumour dose can be increased resulting better clinical results – including lower incidence of radiation side-effects and higher rate of local tumour control. The task of the candidate is to work-out, implement, and prove the clinical efficacy of intensity modulated and/or image guided teletherapy and/or brachytherapy techniques for the management of different tumour sites.