1. A method of tailoring an injection protocol to an individual patient, the injection protocol to be administered in connection with a diagnostic imaging procedure, the method comprising: (a) administering a test injection of a fluid into the individual patient at an administration site thereof, the fluid including a contrast enhancing fluid; (b) performing a test scan of one or more regions of interest of the individual patient as the fluid propagates therethrough to obtain scan data resulting therefrom; (c) determining from the scan data an enhancement output from each of the one or more regions of interest at a plurality of points in time as a result of the propagation of the fluid therethrough; and (d) determining the injection protocol for the individual patient based at least in part upon the enhancement output from each of the one or more regions of interest at each of the plurality of points in time.