Tc-99m pertechnetate

Dr Daniel J Bell and Radswiki et al.

Tc-99m pertechnetate is one of the technetium radiopharmaceuticals used in imaging of thyroid, colon, bladder and stomach.

  • photon energy: 140 keV
  • physical half-life
  • biological half-life: 6 hours
  • normal distribution: stomach, thyroid, salivary glands, (testicles)
  • excretion: renal, GI
  • target organs: thyroid, colon, bladder, stomach, testicular (rarely performed)

Pediatric doses have been derived from various sources, a true international consensus remains work in progress.

  • Meckel diverticulum
    • adult dose: 370 MBq (10 mCi) IV
    • pediatric dose: 1.85 MBq/kg (0.05 mCi/kg) 5
      • minimum 9.25 MBq (0.25 mCi) 5
    • time of imaging: immediate (1 frame/s x 60 s then q 5-10 min x 1 hr)
  • parathyroid subtraction
    • adult dose:  37-74 MBq (1-2 mCi) IV
    • time of imaging: image for 15 minutes after Tl-201 injection and imaging
  • testicular
    • adult dose: 370 MBq (10 mCi) IV
    • pediatric dose: pending mCi/kg
      • minimum 185 MBq (5 mCi) 3
    • time of imaging: 60-second flow study with delayed static images
  • thyroid
    • adult dose: 37-370 MBq (1-10 mCi) IV
      • usually 111-185 MBq (3-5 mCi)
    • time of imaging: 20 minutes
Physics and imaging technology: nuclear medicine
Share article

Article information

rID: 15559
Section: Physics
Synonyms or Alternate Spellings:
  • Technetium-99 metastable pertechnetate
  • Technetium-99m pertechnetate

Support Radiopaedia and see fewer ads

Cases and figures

  • Case 1: thyroid nodule
    Drag here to reorder.
  • Case 2: Meckel scan
    Drag here to reorder.
  • Updating… Please wait.

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

     Thank you for updating your details.