Question

When to use a high or low dose of ionizing radiation.

Answer 1

Ionizing Radiation is a type of energy released by atoms that travel in the form of electromagnetic waves. Internal exposure to Ionizing radiation occurs when a radionuclide is inhaled , ingested or otherwise enters into bloodstreams. External exposure may occur when airborne radioactive material is deposited on skin or clothes.

Dose of radiation received is expressed in a unit called gray (Gy).

If the radiation dose is low and it is delivered over a long period of time ( low dose rate ), the risk is substantially lower because there is greater likelihood of repairing the damage.

If the radiation dose is high , the risk is substantially higher because there is less likelihood of repairing the damage. There is risk of long term effects such as cancer.