Radiation therapy given by injecting a radioactive substance into the bloodstream or a body cavity, or by swallowing it. This substance is not sealed in a container.
UNSEALED INTERNAL RADIATION THERAPY
Meaning of UNSEALED INTERNAL RADIATION THERAPY in English
NCI English Dictionary of Cancer Terms. Английский словарь раковых терминов NCI(Национальный институт злокачественных новообразований). 2012