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Treatment of Cerebral Aneurysms with Hydrogel-Coated Platinum Coils (HydroCoil): Early Single-Center Experience

A. Berensteina,d, J.K. Songa,d, Y. Niimia,d, K. Nambaa, N.S. Herana, J.L. Brismana, M.C. Nahouma, M. Madrida, D.J. Langerc and M.J. Kupersmithb,d

a Center for Endovascular Surgery, Beth Israel Hyman-Newman Institute for Neurology and Neurosurgery, New York, NY
b Department of Neuro-Ophthalmology, Roosevelt Hospital, New York, NY
c Department Neurological Surgery, Roosevelt Hospital, New York, NY
d Albert Einstein College of Medicine, Bronx, NY


Figure 1
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  		Fig 1. HydroCoil after hydrogel (translucent) coating has fully expanded around a platinum core.


Figure 2
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  		Fig 2. Diagrams of angiographic occlusion classes, adapted from Roy et al7: class 1, complete; class 2, residual neck; and class 3, aneurysm filling.


Figure 3
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  		Fig 3. Example of angiographic occlusion classes 1, 2, and 3: class 1, complete occlusion; class 2, persistence of any portion of the original defect of the arterial wall as seen on any single projection but without opacification of the aneurysm sac; and class 3, aneurysm sac opacification.


Figure 4
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  		Fig 4. Example of class 3 conversion to class 1. Left accessory MCA aneurysm shows aneurysm filling (class 3) in immediate postembolization angiogram. Ten-month follow-up angiogram shows class 1 complete occlusion.





Copyright © 2008 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X