Fig 3.

Group 3 subject (high balloon position).

A, Anteroposterior (AP) spot film obtained during aneurysm creation surgery. The right common carotid artery (RCCA) is opacified with the elastase/iodinated contrast mixture. The RCCA is denoted by the black arrow. Note that the inflated balloon is completely in RCCA (white arrow).

B, Same subject as in A. Intraarterial digital subtraction angiogram, right anterior oblique view, demonstrating a remnant of RCCA (black arrow). The maximum diameter of RCCA is 1.5 mm.