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Dose from Dose-Rate
TG-43 derives the Dose Rate: T >>
τ
k
u
: is a units conversion factor to convert the dose rate
expressed in cGy h
-1
and considering the time unit
of the value T to the desired dose unit, Gy or cGy.
This is e.g. the case for permanent implants with
125
I
or
103
Pd
!
τ
=
T
1/2
/ ln2 , with T
1/2
the half-life of the Radionuclide