FIG 1. A, DSA of the left internal carotid artery at 9 months after treatment of a 7-mm aneurysm of the anterior communicating artery. The frontal head view shows a large recanalization (arrow) classified as residual aneurysm (class 3).

B, Contrast-enhanced MR angiograph with MIP reconstruction in the frontal plane (arrow) demonstrates a residual aneurysm (class 3) in accordance with DSA findings.