Francken Vrij - Focus Jaargang 19, editie 3 (2015) 34-41 By P. Dendooven et al. http://www.professorfrancken.nl/franckenvrij/19.3.pdf
The amount of imaging that is performed in hospitals worldwide is constantly increasing. Apart from this increase in volume, multimodal imaging, in which images obtained with different methods are combined, is becoming more important. This development is also seen in the field of radiotherapy, the treatment of cancer with ionizing radiation. Improving radiotherapy through imaging is most relevant when using beams of protons
or heavier ions. New developments in imaging are needed to obtain better information of each individual patient before treatment as well as to verify whether each single irradiation was delivered according to plan