Thyroid scan (Tc-99m)

Tc-99m [pertechnetate] thyroid scan is one of the functional nuclear medicine studies that can be used to assess the thyroid gland.

  • patient preparation
    • NPO for 4 hours prior to exam
  • radiopharmaceutical
  • dose and route of administration
    • 3-5 mCi IV
  • time of imaging
    • 20 minutes after Tc-99m pertechnetate administration
  • equipment
    • camera: gamma camera
    • collimator: pinhole
    • window: 20% energy window centered at 140 KeV
  • procedure
    • obtain anterior, LAO, and RAO views
    • mark chin, suprasternal notch, palpable nodules, and surgical scars

See also

Share article

Article Information

rID: 15560
Section: Physics
Synonyms or Alternate Spellings:
  • Tc-99m thyroid scan
  • Tc-99m pertechnetate thyroid scan

Support Radiopaedia and see fewer ads

Updating… Please wait.

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.