Fluorine-18 or Gallium-68: The Perspective of PET Radiochemist

Microfluidic synthesis of radiotracers: recent developments and commercialization prospects

“…3 The positron travels only a short distance until it is annihilated by an electron. 4 This annihilation event releases a pair of anti-parallel photons that are then captured by detectors in the PET scanner. Both photons must be detected within a tight spatial and temporal window to confirm they are produced from the same event.…”