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Mon, May 21st

Study Type, Agent, and Dose?

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Answer:

Normal FDG-PET Scan
Agent: [18F] 2-fluoro-2-deoxy-D-glucose (FDG)

  • Cyclotron-produced, 109.8 min. T1/2.

Adult Dose: 10 mCi IV
Excretion: Renal
Critical Orang: Bladder
Notes:

  • PET imaging has relatively high resoution, for a NM study, due to coincidence detection.
  • photons are high- energy (511 keV).
  • About 50% of studies will show myocardial uptake, and 50% will not.

Study Comparison-Study Type Does Matter:

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Normal FDG-PET
Higher resolution
Liver Activity
+/- Cardiac activity
Normal Bone Scan
Lower resolution
Bone Activity
No liver or cardiac activity