Figure 1. Shielding equipment used for preparation and administration of radioactive iodine injections. (a) A tungsten (or lead) vial shield is used to hold the I131 vial while the isotope is drawn up into a syringe; (b) a lead syringe guard is placed over a luer lock syringe to shield the clinician drawing up the radioactive iodine.

Radioiodine treatment for hyperthyroid cats: frequently asked questions from vets and clients

Radioactive iodine treatment has the potential to cure a cat's hyperthyroidism. It is well tolerated with a high success rate and is becoming increasingly available for UK feline patients..