The ornamental design for an electronically controlled contrast media injector for medical diagnostic imaging, as shown and described.
FIG. 1 is a perspective view of the design;
FIG. 2 is a front view;
FIG. 3 is a left side view;
FIG. 4 is a right side view;
FIG. 5 is a rear view;
FIG. 6 is a top view; and,
FIG. 7 is a bottom view.