RT Journal Article SR Electronic T1 Mathematic Analysis of Incremental Packing Density with Detachable Coils: Does That Last Coil Matter Much? JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E74 OP E75 DO 10.3174/ajnr.A2454 VO 33 IS 5 A1 Taussky, P. A1 Kallmes, D.F. A1 Cloft, H. YR 2012 UL http://www.ajnr.org/content/33/5/E74.abstract AB SUMMARY: Higher packing attenuation of coils in cerebral aneurysms is associated with a decreased recurrence rate. However, geometric relationships suggest that an additional coil may have very little effect on packing attenuation as aneurysm size increases. We mathematically evaluated the relationship between aneurysm size and incremental packing attenuation for coils currently available. ISATInternational Subarachnoid Aneurysm Trial