SPECT vs PET

Single photon emission computed tomography (SPECT) and Positron emission tomography (PET) are nuclear medicine imaging techniques which provide metabolic and functional information unlike CT and MRI.

They have been combined with CT and MRI to provide detailed anatomical and metabolic information.

Positron emission tomography (PET)
  • very expensive
  • uses positron emitting radioisotope (tracer)
    • 18F
  • better contrast and spatial resolution
Single-photon emission computed tomography (SPECT)
  • lower cost
  • uses gamma emitting radioisotope (tracer)
    • technetium-99m
    • iodine-123
    • iodine-131
  • less contrast and spatial resolution (c.f. PET)

 

Share article

Article Information

rID: 30804
Synonyms or Alternate Spellings:

Support Radiopaedia and see fewer ads

Updating… Please wait.
Loadinganimation

Alert accept

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

Alert accept Thank you for updating your details.