PET

Positron Emission Tomography — detects coincident 511 keV photons from positron annihilation. Superior sensitivity vs SPECT.

Why it matters to buyers: Oncology workhorse (FDG), cardiology (rubidium / FDG), neurology (amyloid, FDG).

Why it matters to engineers: Requires on-site hot lab or radiopharmacy delivery contract + NRC license.