Absorbed dose
Absorbed dose
The absorbed dose is a measure of the energy deposited in a medium by ionizing radiation per unit mass. It is quantified in units of joules per kilogram (J/kg), and its special name is the gray (Gy). The absorbed dose is used in the calculation of dose uptake in living tissue in both radiation protection (radiobiology) and radiology.
Pronunciation
- UK: /əbˈsɔːbd dəʊs/
- US: /əbˈsɔːrbd doʊs/
Etymology
The term "absorbed dose" is derived from the process of absorption of radiation energy by matter. The word "absorb" comes from the Latin absorbēre, which means "to swallow up". The word "dose" is derived from the Greek dosis, which means "a portion prescribed", literally "a giving".
Related Terms
- Dose equivalent
- Effective dose (radiation)
- Equivalent dose
- Exposure (radiation)
- Radiation poisoning
- Radiation therapy
See also
References
External links
- Medical encyclopedia article on Absorbed dose
- Wikipedia's article - Absorbed dose
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