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Photon (X-ray) Therapy

Protons are commonly used in combination with photons or electrons. Combining the two forms of radiation therapy allows the radiation oncologist to treat the primary disease with a high dose of protons and the potentially cancerous regional area with a sufficient dose of photons to destroy micro-metastases. Photons or electrons can be given either prior to or following proton therapy. Radiation is produced by a linear accelerator that can produce x-rays to treat areas deep within the body or electrons to treat tumors close to the skin surface.