¹⁸F still wins: even though ⁶⁴Cu’s positron energy is similar, ¹⁸F produces tighter resolution due to shorter positron range and less gamma noise.⁶⁴Cu images are still good, but slightly more diffuse than ¹⁸F.
Isotope
Positron Energy
Positron Range in Tissue
Image Sharpness
1 18F 0.65 MeV
~0.6 m
Best
2 Cu64
0.65 MeV
~1.0 mm
Good
3 Ga68
1.90 MeV
~2.9 mm
Poorer
So it seems there may be another benefit? Table above is from ChatGPT, along with the summary. So does this defuse the CU64 threat?
Telix ASX TLX Breaking News & Current Commentary, page-3076
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