Fig 2. Group 2 subject (intermediate 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 a small portion of the inflated balloon has herniated into the proximal RCCA (white arrow).

B, Same subject as in A. Intra-arterial digital subtraction angiogram, right anterior oblique view, demonstrating a narrow-neck aneurysm (black arrow). Neck size is 2.5 mm.