Proton therapy has been on the rise in recent years, both in the United States and abroad, with more and more proton centers opening their doors to cancer patients around the globe. It provides an attractive alternative to conventional radiation therapy, as the directed beam more intensely attacks cancerous tissue while sparing surrounding healthy tissue and organs. In addition, radiation oncologists can control the depth to which the proton beam penetrates, and the beam will not travel any further, unlike traditional X-ray-based radiation therapy.