Sealed radioactive sources are either installed in devices that allow the source to move safely in and out of the shielding when the radiation beam is to be used, or in devices that allow a beam of ...

Internal radiation is known as brachytherapy and involves a healthcare provider placing a sealed source of radiation inside ...

Brachytherapy is a form of radiation therapy ... Brachytherapy uses sealed radioactive sources that are placed directly into tumors (interstitial) or in body cavities (intracavitary). One example is ...