XXXX treated with Guglielmi detachable coils: follow-up with contrast-enhanced MR angiography.

@entity1 @entity439 @entity432 @entity438
BACKGROUND AND PURPOSE: The long-term outcome of @entity1 treated with Guglielmi detachable coils (GDCs) remains unknown and is being evaluated. We sought to assess the feasibility and utility of contrast-enhanced MR angiography in the follow-up of anterior communicating @entity438 treated with GDCs. METHODS: In a prospective study, 20 consecutive @entity1 with AcomA @entity439 underwent digital subtraction angiography (DSA), time-of-flight MR angiography (TOF-MRA), and contrast-enhanced MR angiography (MRA) 12 months after treatment with GDCs. The aneurysmal sac measured less than 10 mm in 19 @entity1 and 12 mm in one @entity1 . Two observers who did not analyze the DSA images independently reviewed the MRA images. @entity439 were classified according to the presence of a residual neck (ie, @entity432 , small residual neck, large residual neck, or not assessable). DSA was used as the standard of reference. RESULTS: Images from all examinations were assessable. Venous enhancement was observed in five cases at contrast-enhanced MRA; this did not affect image interpretation. Interobserver agreement was good. A comparison of the techniques showed good agreement in the detection of a residual neck. Two cases of a small residual neck were not detected at TOF-MRA, and one case of @entity432 was misclassified as a small residual neck at contrast-enhanced MRA. CONCLUSION: Our findings showed that contrast-enhanced MRA is a valuable method for the follow-up of @entity439 in the AcomA after their treatment with GDCs. Further studies with @entity439 locations and larger groups are required to determine the exact role of this technique.
