I have been working as a medical physicist at the Netherlands Cancer Institute since 2002. During this time I have been actively involved in the development of image guided radiotherapy. I am currently responsible for the implementation and development of adaptive image guided radiotherapy, which tracks the anatomical changes of the patient during the entire treatment, to adjust the treatment when necessary. One thing that makes the Netherlands Cancer Institute so appealing to me is that its innovative character keeps the time between the development of new, improved radiation techniques and the actual implementation of these new ideas, short. This can further improve the treatment of our patients.