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The SI unit for measuring radioactive decay. One Bq indicates one disintegration per second.

A unit of absorbed radiation dose. One gray is the absorption of one joule of radiation energy per kilogram of matter.

A non-SI unit of radioactivity. One Curie is roughly equal to $3.7 \times 10^{10}$ becquerels.

A non-SI unit of equivalent dose. One rem is equal to $0.01$ sievert.

The average absorbed dose within a specific tissue or organ, often reported when considering the distribution of a radiopharmaceutical.

The SI unit of equivalent dose and effective dose. It accounts for the biological effects of radiation. One Sv is equivalent to one gray for x-rays.

A radiation protection quantity where the dose is adjusted for the type of radiation. It is calculated as $H = D \cdot Q$, where $D$ is the absorbed dose and $Q$ is the quality factor.

The dose of ionizing radiation that is equivalent in terms of its capability to cause biological damage, expressed in sieverts (Sv). It considers the radiation's RBE.

The total dose that an organism is expected to receive over a long-term period (e.g., 50 years for humans) following a one-time radiation exposure.

A method in radiotherapy where a large dose of radiation is broken down into several smaller doses to minimize tissue damage.

The natural ionizing radiation present in the environment, originating from cosmic rays, and naturally occurring radioactive materials.

A dimensionless factor used in radiation protection to weigh the biological effect of ionizing radiation on health.

A non-SI unit of absorbed radiation dose. One rad is equal to $0.01$ gray.

A measure of the energy released by ionizing radiation as it travels through matter. It is expressed in units of energy per unit length, such as keV/micrometer.

The quantity of electrical charge generated by ionizing radiation per unit mass of air. It can be measured in coulombs per kilogram (C/kg).

A factor assigned to different types of ionizing radiation in order to assess their biological effectiveness in causing harm to tissue.

A dose quantity in radiation protection that accounts for the type of radiation and sensitivity of different tissues. It is expressed in sieverts (Sv).

Refers to the stability of the radiation dose delivered over time, which is crucial for repeated or continuous radiation processes.

A measure of the energy transferred from ionizing radiation to air. It is expressed in units of gray (Gy). Kerma stands for kinetic energy released in matter.

The amount of ionizing radiation an individual would receive in a specific amount of time. It is often measured in roentgens per hour (R/hr).

A non-SI unit of radioactivity. One rutherford is equivalent to one million disintegrations per second.

A measure of radioactivity of a material, defined as the activity per quantity of substance. It is commonly expressed in becquerel per gram (Bq/g).

A unit of exposure to ionizing radiation. One roentgen equals the amount of X-rays or gamma rays required to produce ions carrying one esu of charge in one cubic centimeter of dry air under standard conditions.

Acronym for Radiation Absorbed Dose, and the unit is used for non-SI absorbed radiation dose.