Scintigraphy of the thyroid gland

 

Parathyroid scintigraphy

We administer a small amount of radioactive substance in the form of an intravenous injection. As for the examination two pharmacons are needed, the patient gets two injections. One substance – called technetium – accumulates in the thyroidal tissues and the other one – called MIBI – accumulates in the thyroid and the hyperactive parathyroidal tissues as well. 45 minutes after administration of MIBI we perform a SPECT/CT test (which takes about 20 minutes) and right after this we take images of the patient’s thyroid gland. After this part the patient gets the technetium injection and 15 minutes later we are imaging the neck again. So the whole examination lasts about 2 hours.

You are pleased to inform the medical team if any tests were performed on your abnormal thyroid or parathyroid or if you had any kind of contrast radiological examinations in the near past.

Medications: Certain medications may interfere with the test. If the patient takes any kind of drugs, the physician has to inform them 4-6 weeks (!) before the test about taking which medications has to be suspended temporarily. It is especially important in case you take iodine-containing dietary supplement or drugs that affect the thyroid functions.


Examination of the thyroid

During the test we administer a small amount of radioactive substance in the form of an intravenous injection. The radiopharmacon (Tc-99m) acts like iodine in the body, the thyroid cells take it up and this way we can gain information about the thyroid functions. 15 minutes after giving the injection we perform the imaging.
If the specialist finds any abnormality on the images performing an other test may be necessary. But this time the administered pharmacon is different.

Diet: The patient can eat and drink as usual.

Medications: Certain medications may interfere with the test. If the patient takes any kind of drugs, the physician has to inform them 4-6 weeks (!) before the test about taking which medications has to be suspended temporarily.
It is especially important in case you take iodine-containing dietary supplement or drugs that affect the thyroid functions.
Please let us know if you had in the near past contrast X-ray or CT examination.