St Vincent's Clinic Medical Imaging & Nuclear Medicine
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Thyroid Scan

Thyroid scans are performed to look at the size, shape and function of your thyroid.

What will happen when you have your Thyroid Scan

  • A small intravenous injection of the ‘thyroid tracer’ will be injected into a vein in your arm and a scan of your thyroid is performed approximately 20 minutes later
  • The scan of your thyroid may take approximately 20 minutes

The study should not be performed within 6 weeks of having an iodine based intravenous contrast injection. eg. CT scan, angiography, IVP.

What you need to do and how to prepare for the test

You will not be required to undress for the scan. The scan is performed with the Gamma Camera close to your body but you do not go through a ‘tunnel’.

  • You will need a referral from your doctor
  • Thyroid scans require an appointment
  • Please inform booking staff if you are, or think you could be, pregnant or are breastfeeding
  • Inform booking staff if you have had an iodine based intravenous contrast injection for a CT scan, angiography or IVP in the last 6 weeks
  • Please bring any previous relevant X-rays or scans to your appointment
  • You may drive your car following the examination and do not need to be accompanied home
  • You may be in the department for a period of approximately 60 minutes in total
  • You should not feel sick following the examination
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