How is internal radiation therapy conducted?

Hello :) Internal radiation treatments can be quite varied. The two main treatments are brachytherapy and Radiopharmaceuticals.

Brachytherapy - this is when a radioactive pellet/seed is either temporarily or permenantly inserted into a patient near or inside a tumour. For example, permenant radioactive seed implants are commonly used to treat prostate cancer, where as temporary radioactive seed implants are used to treat cervical cancer.

Radiopharmaceuticals - These are drugs that have a radioactive isotope attached to the active chemical. Usually the drugs will be designed to "seek out" abnormal cells (cancer cells), taking the radioactive isotope with them and irradiating the tumour.