| Study period | |||||
---|---|---|---|---|---|---|
Enrollment | Allocation | Post-Allocation | Close-Out | |||
Time point | −t1 | t0 | t1 | t2 | t3 | t4 |
Enrollment | ||||||
 Eligibility screen | X |  |  |  |  |  |
 Informed consent | X |  |  |  |  |  |
 Randomization |  | X |  |  |  |  |
Intervention | ||||||
 Embolization |  |  |  | X |  |  |
Assessments | ||||||
 Demographics, medical history, laboratory data |  |  | X |  |  |  |
 Neurological tests |  |  | X |  | X | X |
 Computed tomography |  |  | X |  | X | X |
 Complications |  |  |  | X | X | X |