Proton therapy is a major technological advancement in cancer care. The effectiveness of proton therapy is due to the way the energy is delivered at a prescribed depth known as the Bragg Peak.
Varian's ProBeam® system is at the forefront of the industry, having created the world's first commercially available pencil-beam scanning system, which is the most precise form of proton therapy available. Only pencil-beam scanning can deliver intensity-modulated proton therapy (IMPT), which is recognised for its effectiveness and the conformity of the dose delivery, and it is also considered an advancement over the other proton-therapy delivery methods.
Currently, proton therapy—offered at 48 centres worldwide—represents only a small percentage of the radiotherapy treatment options. But many centres are in the planning or construction stage.