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
Related Radiopaedia articles
Imaging technology
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- 2-hydroxyglutarate peak: resonates at 2.25 ppm
- alanine peak: resonates at 1.48 ppm
- choline peak: resonates at 3.2 ppm
- citrate peak: resonates at 2.6 ppm
- creatine peak: resonates at 3.0 ppm
- functional MRI (fMRI)
- gamma-aminobutyric acid (GABA) peak: resonates at 2.2-2.4 ppm
- glutamine-glutamate peak: resonates at 2.2-2.4 ppm
- Hunter's angle
- lactate peak: resonates at 1.3 ppm
- lipids peak: resonates at 1.3 ppm
- myoinositol peak: resonates at 3.5 ppm
- MR fingerprinting
- N-acetylaspartate (NAA) peak: resonates at 2.0 ppm
- propylene glycol peak: resonates at 1.13 ppm
- MRI artifacts
- MRI hardware and room shielding
- central point artifact
- herringbone artifact
- inhomogeneity artifact
- moiré fringes
- RF overflow artifact
- zebra stripes
- zipper artifact
- MRI software
- patient and physiologic motion
- tissue heterogeneity and foreign bodies
- Fourier transform and Nyquist sampling theorem
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- In-111 Octreoscan
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- In-111 Prostascint
- In-111 oxine labeled WBC
- krypton-81m
- nitrogen-13
- oxygen-15
- phosphorus-32
- selenium-75
- technetium agents
- Tc-99m DMSA
- Tc-99m DTPA
- Tc-99m DTPA aerosol
- Tc-99m HMPAO
- Tc-99m HMPAO labeled WBC
- Tc-99m MAA
- Tc-99m MAG3
- Tc-99m MDP
- Tc-99m mercaptoacetyltriglycine
- Tc-99m pertechnetate
- Tc-99m labeled RBC
- Tc-99m sestamibi
- Tc-99m sulfur colloid
- Tc-99m sulfur colloid (oral)
- thallium-201 chloride
- xenon agents
- in vivo therapeutic agents
- erbium-169
- samarium-153
- strontium-89
- yttrium-90
- pharmaceuticals used in nuclear medicine
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