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Medical · Generator Parent
Sr
38
82

Strontium-82

The cyclotron-produced parent of the Rubidium-82 generator — the backbone of cardiac PET perfusion imaging. Produced at high energy via ⁸⁵Rb(p,4n)⁸²Sr.

t½ 25.3 daysElectron Capture
38 e⁻5 shells

Atomic Structure

38
Protons
44
Neutrons
K2 e⁻
L8 e⁻
M18 e⁻
N8 e⁻
O2 e⁻

Applications

  • Rb-82 generator production
  • Cardiac PET perfusion
  • High-energy target systems
  • Cardiology diagnostics

Production

Reaction
⁸⁵Rb(p,4n)⁸²Sr
Target
Rubidium-85
Source
70 MeV Cyclotron
16 MeV CyclotronNo
30 MeV CyclotronLimited
70 MeV CyclotronYes
Nuclear ReactorNo

Requires >40 MeV for efficient production; optimal 40–70 MeV.