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

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Article Information

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

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