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Thyroid scanning or scintigraphy is a procedure to image the thyroid gland.
99m-Tc pertechenetate is the radiopharmaceutical administered intravenously and imaged on a gamma camera.
Common indications for a thyroid scan include:
For further information and advice please contact your nuclear medicine department.
This study may not be suitable for pregnant women. The benefit versus risk should be discussed with the nuclear medicine specialist.
Radioisotope is secreted in breast milk. Women who are breast-feeding need to make special preparations after the test to stop breastfeeding for 24 hours. Expressing breast milk before the scan is an alternative option. For further information, see InsideRadiology: Nuclear Medicine.
There is no requirement to avoid close contact with small children after a thyroid scan.
There are no known associated risks, but the patient will be receiving a dose of ionising radiation (see InsideRadiology: Radiation risk of medical imaging for adults and children).
There are no post-procedural care requirements.
Ultrasound is routinely used in the characterisation of thyroid nodules and thyroid gland size.
CT or MRI gives additional information regarding retro-sternal extent and anatomical effects on adjacent structures.
Page last modified on 14/5/2018.
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