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radiation_therapy" src="http://cancer-centre.com/wp-content/uploads/2009/12/radiation_therapy-300x229.jpg" alt="radiation_therapy" width="300" height="229" />Radiation therapy is given through different methods depending on cancer type, location and health of the patient. In some cases, radiation therapy used in combination with other treatments. Here are some of the different types of radiation therapy and a brief explanation of the objectives:
external radiation (external radiation therapy)
With external radiation (external radiation therapy), radiation is administered through a large machine that points the energy waves directly to the tumor. The radiation therapist controls the machine. Since radiation is used to kill cancer cells, should make special shields to protect the tissue surrounding the treatment area. The treatments are painless and usually last a few minutes.
internal radiation (brachytherapy, implant radiation)
With internal radiation (brachytherapy, implant
radiation), radiation is given inside the body, as close to the cancer. The radiation treatment may be swallowed, injected or implanted directly into the tumor. Some of the radioactive implants are called "seeds" or "capsules". Internal radiation involves giving a higher dose of radiation in a shorter time period with respect to external radiation. Some internal radiation treatments stay in the body temporarily, other internal treatments stay in permanently, although the radioactive substance loses its radiation within a short time. In some cases, radiation therapy using both internal and external.
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