Brachytherapy places radioactive sources internally very close to the area to be treated. Needle or balloon implants are placed in the operating room, but treatments occur on an outpatient basis. The temporary implants do not cause the patient to be radioactive and are removed after a series of twice-daily treatments.
Radiation is delivered by a high-dose-rate remote afterloading machine that allows each treatment to be given in about 10 to 20 minutes. Powerful radioactive sources travel through small tubes (catheters) to the treatment site for the amount of time prescribed by the radiation oncologist.
Internal radiation can be delivered using a number of different techniques.
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