The equivalent dose to a tissue is found by multiplying the absorbed dose, in grays, by a dimensionless "quality factor" Q, dependent upon radiation type, and by another dimensionless factor N, dependent on all other pertinent factors.
In terms of SI base units:
SI multiples and conversions Edit
Frequently used SI multiples are the millisievert (1 mSv = 10–3 Sv) and microsievert (1 µSv = 10–6 Sv).
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