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FIG 1. Recurrent communicating posterior aneurysm partially treated initially with a surgical clip and secondarily with coils.
A, DSA lateral projection image obtained 1 year after GDC treatment shows an aneurysm remnant (arrow).
B and C, Three-dimensional TOF (B) and contrast-enhanced 3D-TOF (C) images obtained with MIP reconstruction depict the same remnant cavity (arrow). On both MR angiograms, loss of signal intensity is noted at the internal carotid artery level above the aneurysm due to an artifact from the surgical clip. On the contrast-enhanced 3D TOF image, there is a enhancement of the cavernous sinus that does not preclude aneurysm analysis.
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