Units of Radiation Exposure and Dose
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Created by:
megancollard on December 7, 2011
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4 terms
Terms | Definitions |
|---|---|
 Exposure | Electric charge is a measure of the amount of ionisation caused by a beam of radiation passing through the air, and the total electric charge formed in a given mass of air is called exposure. Measured in coulombs per kilogram. |
| Absorbed dose | The amount of energy transferred to irradiated material (J/Kg). Measured in Grays (1 Gray = 1 J/Kg) [large amount, tend to use milligrays] |
| Dose Equivalent | Absorbed dose weighted for the type of radiation used. Dose Equivalent (Sv) = Absorbed dose (Gy) x Quality Factor. Tells you how damaging the radiation is. |
| Effective Dose | A further adjustment based on the radiosensitivity of various tissues. Effective Dose (Sv) = Dose Equivalent x Weighting Factor Doesn't take age into account - tissues are more sensitive when younger as they are still growing. |
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