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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 28:387-389, February 2007
© 2007 American Society of Neuroradiology

Technical Note
INTERVENTIONAL

Analysis of Complex Framing Coil Stability in a Wide-Necked Aneurysm Model

P.E. Schloesser^a, R.S. Pakbaz^b, D.I. Levy^b, S.G. Imbesi^c, W.H. Wong^c and C.W. Kerber^c

^a Department of Radiology, Division of Neuroradiology, LDS Hospital, Salt Lake City, Utah
^b Departments of Neuroradiology and Neurosurgery, Division of Neuroradiology, Kaiser Permanente Medical, Center, San Diego, Calif
^c Department of Radiology, Division of Neuroradiology, University of California San Diego Medical Center, San Diego, Calif

Address correspondence to Peter E. Schloesser, MD, Department of Radiology, Division of Neuroradiology, LDS Hospital, 8th Ave and C St, Salt Lake City, UT 84143; e-mail: peter.schloesser{at}mtnmedical.com

SUMMARY: Appropriately sized 0.010- and 0.018-inch complex framing coils were placed in a wide-necked silicone aneurysm replica, and their stability was evaluated at variable physiologic flow rates using video recording. After detachment, the 0.010-inch coils demonstrated instability/prolapse that was proportional to flow rate. In contrast, 0.018-inch coils held their 3D configuration regardless of flow rate. The findings support the use of 0.018-inch coils (when possible) in aneurysms with unfavorable geometry, particularly in circulations with higher flow rates.