TG-43 Practice Problems

A NASI MED3631-A/M ¹²⁵I source with measured air kerma strength of 40.250 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 5.5 cm and a polar angle of 48^o? Use the point source approximation.

**All values, unless stated within the problem, should be obtained using the TG-43 updated report.