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. Author manuscript; available in PMC: 2013 Nov 20.
Published in final edited form as: J Nucl Med. 2012 Feb 6;53(3):10.2967/jnumed.111.097162. doi: 10.2967/jnumed.111.097162

FIGURE 1.

FIGURE 1

Parent radioligand fraction, radioactivity concentrations (conc), and radiometabolite profile in plasma from 40-y-old healthy man injected with 755 MBq of 11C-NOP-1A. (A) Fraction of unchanged parent radioligand 11C-NOP-1A (○) in plasma fitted by Hill function. (B) Time course of parent 11C-NOP-1A concentration (○) in arterial plasma fitted by multiplying triexponential-fitted total plasma radioactivity and Hill function–fitted plasma parent fraction. (C) Radiochromatogram illustrating plasma composition 40 min after injection of 11C-NOP-1A. Radioactivity was measured in counts per second (cps). Peaks A to D and parent are labeled with increasing lipophilicity.