Surgical clipping or endovascular coiling procedures are performed to treat ruptured and unruptured cerebral aneurysms based on the location shape, and size of the aneurysm [1,2]. After these treatments, long-term follow-up imaging every 6–12 months is recommended to monitor potential recurrence. CT angiography (CTA) or MR angiography (MRA) is typically used in such a follow-up [3,4]. However, it is difficult to evaluate blood vessels (including the aneurysm neck) with MRA after clipping, becaus…