Glossary Term:


three-dimensional conformal radiation therapy



also called 3DCRT. Treatment that uses sophisticated computers to very precisely map the location of the cancer within the body. The patient may be fitted with a plastic mold much like a cast to keep them still and in the same position for each treatment so that the radiation can be more precisely aimed. Radiation beams are then aimed from several directions. This reduces the radiation effects on normal tissues and may allow higher doses of radiation to be used. See also external beam radiation therapy, radiation.