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(a) plasma input curve of 9L_Sim and U251_Sim. (b) Concentration of imaging agents in different compartments over time of imaging for noise-free 9L_Sim. (c) Concentration of imaging agents in different compartments over time of imaging for noise-free U251_Sim. The dashed black lines in (b) and (c) are representing the maximum of available receptor concentration in vivo.
