Fig 3.

A, 3D imaging of a superiorly directed OA aneurysm; balloon test occlusion was not performed due to the aneurysm type (ICA) and a relatively well-demarcated margin between the OA orifice and the aneurysmal neck in the working projection. B, Simple technique via a steam-shaped S-configured microcatheter results in persistent herniation of coils into the parent artery. C, A Neuroform stent (arrows, stent markers) stabilizes the coil mass and secures the OA orifice. D, Completion angiography of successfully occluded aneurysm, with the OA preserved.