Tc-99m pertechnetate

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
    • adult dose: 10 mCi IV
    • paediatric dose: 250 mCi/kg (minimum 2 mCi)
    • time of imaging: 60-second flow study with delayed static images
  • Meckel's diverticulum
    • adult dose: 10 mCi IV
    • pediatric dose: 30-100 mCi/kg (min 2.0 mCi)
    • time of imaging: immediate (1 frame/s x 60 s then q 5-10 min x 1 hr)
  • thyroid
    • adult dose: 1-10 mCi IV (usually 3-5 mCi)
    • time of imaging: 20 minutes
  • parathyroid subtraction
    • adult dose: 1-2 mCi IV
    • time of imaging: image for 15 minutes after Tl-201 injection and imaging
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Article information

rID: 15559
Section: Physics
Synonyms or Alternate Spellings:

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Cases and figures

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    Case 1: thyroid nodule
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    Case 2: Meckel scan
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