What is the unit of measurement for radiation dose absorbed by tissues?

Question

Question

Answer 1

Correct Answer: Gray

Rationale:

The unit of measurement for radiation dose absorbed by tissues is the Gray (Gy). This unit quantifies the amount of ionizing radiation energy absorbed per unit mass of tissue.
One Gray is equivalent to the absorption of one joule of radiation energy per kilogram of tissue (1 Gy = 1 J/kg).
The Gray is a critical unit in radiation protection, medical treatments like radiotherapy, and radiation research, as it provides a measure of the potential biological effect of the absorbed radiation.

Explanation of Other Options:

Sievert

Rationale: The Sievert (Sv) is a unit used to measure the effective dose of radiation, which accounts for the biological effect of the type and energy of the radiation absorbed. It is used in radiation protection to assess the risk of exposure to human health.

Roentgen

Rationale: The Roentgen (R) is an older unit of measurement for exposure to ionizing radiation, specifically measuring the amount of ionization produced in air by X-rays or gamma rays. It does not measure the absorbed dose by tissues.

Curie

Rationale: The Curie (Ci) is a unit used to measure radioactivity, indicating the number of disintegrations per second of a radioactive substance. It is not a measure of the absorbed dose by tissues but rather the activity of a radioactive source.

Conclusion:

Among the given options, the Gray (Gy) is the correct unit of measurement for the radiation dose absorbed by tissues. It is essential in various fields, including medical treatments and radiation protection, to understand the potential effects of ionizing radiation on biological tissues.