External radiation therapy
It is usually done using an electrical device called a linear accelerator so that the rays are directed at the patient without direct contact between the radiation source and the patient, and it is the most common
Types of external radiation therapy: Photon and particle therapy
There are two types of external radiation therapy, the most popular and widely used of which is photon therapy. Due to its frequent use, it is highly reliable and has known results. It is expected, but its drawback is that the medium and small doses around the tumor are higher than the particles, which may lead to more symptoms in some cases. The other type is particle therapy. There are also two types: The first is the small electron, This cannot reach a deep target within the body, It is used, for example, for some cases of skin cancer or when the tumor is not as deep as the other type of particle therapy, Proton therapy has the ability to reach deep tumors and the particles are characterized by medium and small doses around the tumor less than photons.
