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. Author manuscript; available in PMC: 2013 Sep 19.
Published in final edited form as: J Nucl Med. 2012 Nov 12;54(1):64–69. doi: 10.2967/jnumed.112.106872

TABLE 2.

Comparison of Parameters in Baseline (n = 10) Versus Propofol (n = 10) Scans

Parameter Baseline Propofol % change P
Injected mass associated with radioactive dose (nmol/kg) 0.092 ± 0.04 0.098 ± 0.03 +6.5% 0.35
Radiochemical purity (%) 97.6 ± 1.8 97.9 ± 0.7 +0.3% 0.33
Plasma50% (min) 9.66 ± 2.3 10.84 ± 2.7 +12.2% 0.09
Tmax (min) 1.36 ± 0.14 1.13 ± 0.12 −16.9% 0.00
Parent plasma AUC0→120 4,803.2 ± 726.8 5,418.2 ± 637.2 +12.8% 0.02

% change = (propofol − baseline)/baseline; plasma50% (min) = time from peak to 50% decrease from peak of 11C-PBR28 concentration in arterial plasma; AUC0 → 120 = area under curve of 11C-PBR28 concentration in arterial plasma calculated from time 0 to 120 min.