FIG 1. Waiting method. A, Anteroposterior left ICA angiogram shows >60% stenosis (arrow) of the M1 portion of the MCA.

B and C, Standard technique for stent navigation failed (not shown). Anteroposterior views obtained after the stent-delivery system was withdrawn show the angled microwire in the cavernous ICA (arrows).

D, After 20 minutes of waiting, anteroposterior view shows that the angle of microwire changed (black arrow), and navigation of the delivery system (white arrow) into the target lesion is successful.

E, Balloon-mounted coronary stent is successfully deployed (arrow).

F, Anteroposterior left ICA angiogram after stent placement reveals sufficient and smooth dilatation of the stenotic segment (arrow).