Figure 3

Representative blood input function (filled yellow squares) and tumor tissue tracer concentrations. Obtained in a 60-min acquisition sequence (left, 68Ga-BZH3; right, 68Ga-RGD4). Filled green squares are tracer concentrations for each image, while the smooth line through the data is the two-tissue-compartment model fit to the data. A smooth line (interpolation) was drawn through the input function data to illustrate the shape of the curve.