brachytherapy(redirected from Interstitial Radiation Therapy)
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Related to Interstitial Radiation Therapy: Internal Radiation Therapy, implant radiation therapy
n. pl. brach·y·ther·a·pies
Radiotherapy in which the source of radiation is placed close to the surface of the body or within a body cavity.
(Medicine) a form of radiotherapy in which sealed sources of radioactive material are inserted temporarily into body cavities or directly into tumours