Extended Data Fig. 9: Analytical quality control HPLC chromatogram of [18F]FEDV used in all studies, confirmed with coinjection of a fully characterized standard.

Chemical purity was determined by UV absorbance at 254 nm (top) and radioactivity using a gamma detector (bottom). HPLC column: Synergi Hydro-RP C18 column (4 μm, 250 × 4.6 mm, 80 Å) (Phenomenex, Torrance, CA) under isocratic flow of a mobile phase consisting of 35:65 ethanol:formate buffer (0.2 M formic acid/0.05 M sodium formate) at 1 mL/min.