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. Author manuscript; available in PMC: 2009 Aug 3.
Published in final edited form as: Nat Med. 2008 Jun 8;14(7):783–788. doi: 10.1038/nm1724

Table 1.

Amongst existing PET probes for nucleoside metabolic pathways and glycolysis, [18F]FAC shows better selectivity for thymus and spleen (values are %ID/g per organ normalized to %ID/g muscle). Retention of [18F]FDG in the thymus could not be measured because of signal spillover from the heart. Number of mice = 3.

[18F]FAC [18F]FLT [18F]FMAU [18F]FDG
Spleen 2.16+/− 0.48 1.02+/− 0.21 1.08+/− 0.27 1.69+/− 0.16
Thymus 3.29+/− 0.48 1.22+/− 0.23 1.33+/− 0.24 N.D.