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Medical · TheranosticNovel
Sc
21
44
Scandium-44
A novel positron emitter (β⁺) and Gallium-68 alternative whose 4-hour half-life extends imaging windows and enables centralized distribution of PET tracers.
t½ 4.0 hoursPositron Emission (β⁺)
21 e⁻4 shells
Atomic Structure
21
Protons
23
Neutrons
K2 e⁻
L8 e⁻
M9 e⁻
N2 e⁻
Applications
- Neuroendocrine tumor PET
- Prostate cancer imaging
- Ga-68 alternative tracer
- Theranostic pairing with Sc-47
Production
Reaction
⁴⁴Ca(p,n)⁴⁴Sc
Target
Enriched ⁴⁴Ca
Source
16 MeV Cyclotron
16 MeV CyclotronYes
30 MeV CyclotronYes
70 MeV CyclotronYes
Nuclear ReactorNo
Threshold ~5 MeV, optimal 9–14 MeV.