Prospective Study of Early MRI Appearances following Flow-Diverting Stent Placement for XXXX .

@entity1 @entity932 @entity548 @entity75 @entity4 @entity1756 @entity887 @entity439 @entity438
BACKGROUND AND PURPOSE: MR imaging findings of @entity439 , @entity439 wall enhancement, perianeurysmal @entity4 , and @entity887 following deployment of flow-diverting stents may be relevant to those @entity1 who subsequently experience procedure-related @entity932 . We sought to document the routine early postoperative MR imaging findings following flow-diverting stent insertion. MATERIALS AND METHODS: @entity1 requiring flow-diverting stent placement for treatment or retreatment of @entity438 were prospectively included in the study during a 26-month period. Early postprocedural MR imaging studies were obtained and compared with preoperative imaging. @entity1 clinical outcome data were also collected. RESULTS: There were 34 stent-placement procedures during the study period. @entity439 and mild new perianeurysmal @entity4 were present in 50% and 14%, respectively. Any @entity75 was present in 57% of cases. New or possibly new foci of susceptibility effect were found ipsilateral to the stent and not associated with diffusion restriction in 66% of cases. There were 2 cases (6%) of @entity548 and 2 major clinical complications (6%) causing permanent morbidity. CONCLUSIONS: Asymptomatic @entity439 mural enhancement is frequently seen following flow-diverting stent placement and should not necessarily be interpreted as a sign of impending @entity1756 . This finding often persists despite complete @entity439 . New small brain parenchymal susceptibility foci following stent placement have not previously been reported, to our knowledge, but were common in our series.
