Figure 6
Target-to-background ratios of [18F]fluoro-PEG-folate. Arthritic knee-to-bone and arthritic knee-to-blood ratios of [18F]fluoro-PEG-folate (black bars) and (R)-[11C]PK11195 (grey bars) obtained from ex vivo tissue distribution studies. Results are presented as mean ± SD of four rats for [18F]fluoro-PEG-folate and five rats for (R)-[11C]PK11195. *= P <0.05