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TOF MRA (sequence 2, axial view) of the same aneurysm immediately following coil embolization (A) and at 1 (B), 4 (C), 8 (D), 14 (E), and 28 (F) weeks after coil embolization. G, OEF decreases between zero and approximately 4 weeks, when it becomes stable. Note that the OEF increases with increasing TE. Error bars are the standard error of the mean.
