X-ray

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Definition
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Unit of ion dose (R). It corresponds to a quantity of radiation that produces 2 times109 ion pairs in 1.293 mg (= 1 cm3) of air. This quantity of ions can transport a charge from an electrostatic unit (= 3.33 times 10-10 coulombs), unit: coulomb/kg. For soft tissue, 1 R applies about 1 approx.

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Last updated on: 29.10.2020