Special shields may be used to protect parts of the body that do not require treatment. Internal radiation treatment involves the placement of radioactive material directly into tissues or into body cavities. It can also be administered orally or intravenously. The substances used are materials such as iridium, palladium, gold, cobalt or iodine. The radioactive implants may be in the form of wires, ribbons, tubes, needles or seeds.
Implants give a high dose of radiation to cancer cells with less exposure to normal cells.
Internal radiation is often used in combination with external radiation. The extent of side effects from radiation therapy will vary depending on the area treated and the dose received. While side effects are unpleasant, most are usually temporary and will gradually disappear when therapy is complete. Fatigue One of the most common side effects is fatigue or weakness. Patients should limit activities and rest while the body begins to recover.