Rolleston Vets

Radiation therapy using Iodine 131

Radiation therapy using Iodine I131 treatment for Feline Hyperthyroidism

There are many different clinical signs related to Feline Hyperthyroidism. Weight loss, restlessness, increased appetite and thirst, and sometimes vomiting or diarrhoea are some of the common symptoms you may notice. Hyperthyroidism is very common in cats and a simple blood test, in conjunction with a full clinical exam can confirm the disease. Treatment is always necessary as sudden death, heart disease or blindness could occur. Treatment options include Iodine 131 treatment, surgery, lifelong medication with tablets or a very specific prescription diet. I 131 treatment has become the gold standard and is available here at Rolleston Veterinary Services. I 131 is a radioactive substance which destroys the abnormal thyroid tissue. A specific dose of I131 is tailored to your cat and is administered by a single injection under the skin. Your cat then needs to stay with us at the hospital for 5-7 days so radiation levels can be monitored. In 98% of cases cats are cured and don’t need any further treatment.

This treatment is not suitable for all cats unfortunately and each patient is assessed on an individual basis to determine their best treatment option.