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FIG 2. A, Lateral left internal carotid angiogram reveals partial recanalization of the giant left ICA aneurysm that had been initially treated with GDC occlusion.
B, Left internal carotid right oblique angiogram after polymer treatment shows that the regrowth at the neck is completely occluded.
C and D, Axial T2-weighted turbo spin-echo MR images before (C) and after (D) polymer treatment. The entire aneurysm sac is hypointense after being filled; this finding includes the hypointense patent regrowth (arrowhead) and the thrombosed portion containing the GDC (arrows). The signal intensity change in the thrombosed portion may suggest penetration of the polymer into the coil mass and thrombus.
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