TG-43 Practice Problems
A Imagyn IS-12501 125I source with measured air kerma strength of 30.955 U is used for a brachytherapy treatment.
What is the dose rate in water, in cGy/hr, at a point located at a radial distance of 5.0 cm and a polar angle
of 7o? Use the point source approximation.
**All values, unless stated within the problem, should be obtained using the TG-43 updated report.