Parathyroid Scan

Also known as: MIBI scan, Sestamibi Parathyroid scan.

A Parathyroid scan is performed to localise possible parathyroid adenomas in patients with primary hyperparathyroidism.

Please advise us beforehand

If you think you may have had a recent CT scan with intravenous contrast please notify staff when making your appointment.

Please make staff aware if you are, or think you could be pregnant, breastfeeding, claustrophobic and/or if you are the primary/sole carer for small children when you book your appointment.


You may be asked to cease certain medications or vitamin supplements prior to the test.

Bring any previous Nuclear Medicine scans or any other scans relating to the area of interest, as well as any recent blood tests measuring thyroid function to your appointment.

What happens during the procedure

Part 1: You will be positioned under the Gamma Camera and given a small injection of a radioactive tracer. This injection shouldn’t make you feel any different and allows images to be taken of the thyroid and parathyroid glands. Images are commenced at the time of injection and are taken for approximately 60 minutes. You will then be sent away for a period of time (approximately 2 hours) during which time you can go about normal activity (including eating, drinking, driving your car etc).

Part 2: When you return, additional images of your neck will be acquired, along with a second injection of radioactive tracer. This part takes approximately 30-60 minutes.

How long does it take?

Approximately 60 minutes for part one of the test. You will then be given a time to return for part two of the test approximately 2 hours later which takes approximately 30-60 minutes.

After your examination

There are usually no after effects from a parathyroid scan.

Your images and report

After your examination, the most pertinent images from your study will be available on the myPRP patient portal. A report, along with the images will be sent directly to your referring doctor. PRP will store digital copies of all studies on our secure database for comparison with any future examinations.
Please bring any previous X-rays with you.
It is important that you return to your doctor with your examination results. Whether they are normal or abnormal, your doctor needs to know promptly so that a management plan can be formulated.