tc-99m DTPA (aerosol)

Tc-99m DTPA (diethylenetriamine-pentaacetic acid) (aerosol) is one of the technetium agents and is used in VQ imaging.

Characteristics

  • photon energy: 140 KeV
  • physical half life: 6 hours
  • biological half life: 1 hour
  • normal distribution: lungs
  • pharmacokinetics:
    • aerosol deposited in bronhoalveolar spaces and diffuses into capillaries
  • excretion: renal
  • target organ: lungs

Uses, doses and timings

  • V/Q ventilation
    • adult dose: 1.11 GBq (30 mCi), (1.665 GBq (45 mCi) if after perfusion) in 3 mL saline nebuliser
    • timing: image immediately for 5 minutes
Imaging technology
Siehe auch:
und weiter: