Article Figures & Data
Figures
- Fig 1.
Postcontrast T1-weighted images showing aneurysm mural enhancement following flow-diverting stent placement. A, Smooth linear wall enhancement in a large left paraclinoid aneurysm. B, Linear wall enhancement along with some central aneurysm luminal filling in a large right posterior communicating artery aneurysm. C, Nodular wall enhancement of a left paraclinoid aneurysm.
- Fig 2.
Development of mild perianeurysmal edema following flow-diverting stent placement. A, Axial FLAIR imaging before treatment. B, Corresponding FLAIR image following stent placement shows new perianeurysmal edema.
- Fig 3.
Development of new susceptibility foci in the ipsilateral hemisphere following flow-diverting stent placement for a right posterior communicating artery aneurysm. Axial SWI (top row, A–C) obtained 7 days before deployment of a right supraclinoid ICA flow-diverting stent shows a single susceptibility focus laterally in the superior right parietal lobe (B). Axial SWI obtained 6 days following stent deployment (bottom row, D–F) shows small new susceptibility foci in the superior right frontal lobe (D, arrow), superior right parietal lobe (E, arrow) medial to the pre-existing focus, and in the right occipital pole (F, arrow). The patient had a moderate-sized posterior communicating artery arising from the aneurysm, approximately co-dominant in size with the right P1 segment.
- Fig 4.
Pontine hemorrhage 2 weeks following flow-diverting stent placement for a large left posterior cerebral artery aneurysm in a 52-year-old man. Axial DWI (A) and SWI (B) performed at 2 days post-stent deployment show 2 small foci of restricted diffusion in the right cerebellar hemisphere but no signal disturbance in the brain stem. Sagittally reformatted noncontrast CT scan (C) obtained 2 weeks after stent deployment following a syncopal episode shows a 3-mm pontine hemorrhage (arrow). Axial DWI (D) and SWI (E) performed at 6 months show the susceptibility effect at the site of the prior pontine hemorrhage.
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