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Brachytherapy comprises interstitial therapy and intracavitary therapy. To facilitate delivery of interstitial therapy, a radioactive material for example gold-198, iridium-192 or iodine-125 is put in using a surgery in the surrounding area. The radionuclide is inserted as an element of strands using tiny preserved bud vases or in detachable needles. These stands are called seeds. In the intracavitary therapy the radioactive source is placed closest to the tumor inside a body cavity. For this process radioactive materials like radium, cesium-137 or phosphorous-32 are used. Uterus, cervix, and vaginal cancers are managed using intracavitary therapy. Dispensation of radioactive materials into the bloodstream is one more variety of radiotherapy. For this method of radiotherapy iodine-131 is used to treat hyperthyroidism and thyroid carcinoma. Iodine-131 is dispensed orally in hyperthyroidism and this material mixed with blood and mounts up in the thyroid gland. This

Radiation Therapy:  X-rays and radionuclides are used in the medical field for both detecting disease, as well as curing diseases in the form of therapy. Using large doses of radiation materials via therapy is life-threatening event to the calls of the body those are irradiated. The specialization of radiation oncology has been chiefly ready to lend a hand as a technique for the handling of cancers. The equipments used for radiation oncology are unlike from those used for detection of diseases. The machines used in radiation therapy bring about rays of many times higher intensity. Orthovoltage machines deliver low-energy radiation, which in modern treatment centers is used in managing cancers for superficial skin cancers. Megavoltage machines produce high-energy radiation. These megavoltage machines are used to heal more profound tissues. This is curative radiotherapy treatment for cancer. Betatron and linear accelerator are the two types of radiotherapy