Principally, proton therapy is applicable for all types of tumors that can also be radiated by conventional means. The main usage for proton therapy is the treatment of cancer illnesses. Which types of cancer can be treated with proton radiation? Thereby, the radiation dose, which impacts the tumor tissue, can be increased while the radiation effect on healthy tissue decreases. Through this, the emitted energy concentrates on the area in which the tumor is localized and can destroy tumor cells precisely. Proton radiation, in contrast, can be directed in three dimensions, which means that the penetration depth can be directly targeted at the treatment region within the tissue. Healthy tissue will be unnecessarily radiated. Thereby, energy in front of and behind the tumor will be emitted. Photon radiation uses electromagnetic waves, whose direction can be precisely controlled, but penetrate throughout the entire body. The so-generated proton radiation works on a fundamentally different principle than conventional radiation therapy with x-ray and photon radiation. What advantages does Proton therapy have over conventional radiation? On the way to the radiated area, the energy is very low, however it increases explosively as soon as the particles have reached the target, known as the “Bragg-peak” phenomenon. Due to their physical traits they provide more energy, the slower they become. Throughout body, the particles are slowed down. The protons penetrate into the body at pre-calculated depths. In addition, during the procedure the patient can lay on a treatment table beneath the equipment. Thereby it is not only possible to determine the direction of the proton ray, but also, how far it should penetrate the patient’s body. During proton therapy, protons are accelerated and pin-pointed at the desired area at circa 180,000 km/h.