Nuclear imaging using single-photon emitters (technetium-99m, iodine-123) with rotating detector to create 3D images
Expansion
Single Photon Emission Computed Tomography
Purpose
Myocardial perfusion, bone imaging, brain perfusion, ventilation-perfusion imaging
Clinical Context
SPECT reconstructs 3D image from 2D projections. Older, lower cost than PET; lower resolution but useful for perfusion and functional imaging.
Related Terms
- PET
- Planar imaging
Key Points
- SPECT provides 3D images; useful for myocardial perfusion, bone pain localisation, and stroke assessment