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Radiation therapy
http://globalvisionngo.org/cc-radiation.htm
Radiation therapy involves the use of carefully targeted doses of x-rays or other high-energy rays to kill cancer cells and shrink tambours. While given as a preventive measure for early cases of cancer, it is also administered as a palliative treatment for pain relief in advanced cases. Radiotherapy may be used alone or together with surgery or chemotherapy.
Radiotherapy can be given in two ways, either as external beam radiotherapy (external radiotherapy) or as a radioactive implant (internal radiotherapy).
External Radiotherapy: This treatment involves the high energy rays being directed to the cancer by various machines which include cobalt 60, linear accelerator and betatron. The dosage and duration of the treatment depend on the patient's weight andgeneral health, the type, size and location of the tumor and whether surgery and chemotherapy have been used or are planned in the future. A typical course lasts 4 to 6 weeks with treatment for 5 days per week and a weekend break to allow time for normal cells to recover and rebuild. The attending physician checks the patient's progress to measure the total radiation delivered.
