Roy et al reported a classification for the angiographic appearance after endovascular treatment of an unruptured cerebral aneurysm. The authors are from the University of Montreal and Laval University in Canada.

Patient selection: endovascular therapy of an unruptured cerebral aneurysm


Patient evaluation: cerebral angiography


Angiographic Appearance of Aneurysm

Raymond Roy Class

complete obliteration


residual neck


residual aneurysm observed



Initial and follow-up angiograms may show a different class.


Class 3 aneurysms had a risk of recurrence.

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