Radiation Dosimetry
Individuals working with ionizing radiation can receive radiation dose either externally (e.g., radiation emitted from radioactive material or a device outside the body) or internally (from radioactivity deposited within the body due to ingestion, inhalation, or absorption of radioactive material). To determine the external radiation dose personnel monitoring devices (dosimeters or “radiation badges”) are used, while bioassays are used to determine internal radiation dose.