FIG 3. Detection of aneurysmal neck remnant.

A, DSA image of the left internal carotid artery obtained 12 months after the treatment of a 5-mm aneurysm of the AcomA. Frontal head view shows a residual neck with a 3-mm diameter (arrow).

B, TOF-MRA image obtained with MIP reconstruction in the axial plane does not depict the residual neck.

C, Contrast-enhanced MRA image obtained with axial MIP reconstruction in the axial plane shows a small residual cavity (arrow), in agreement with the DSA findings.