Proton radiotherapy is currently one of the most advanced and precise treatment techniques using ionising radiation.

The major advantage of using proton beams is the ability to deliver high doses of radiation to cancerous cells while sparing healthy tissues and critical areas that are near the tumour. Accelerated protons transfer most of the energy at the end of their path in tissue, in the so-called Bragg Peak region. Behind the Bragg Peak dose decreases dramatically which means that healthy tissues lying behind the tumour receive practically no dose. Medical physicist, by choosing the right energy of the proton beam, can plan the treatment in a way that maximises damage to the tumour and spares the surrounding healthy tissue.