RT Journal Article SR Electronic T1 MR artifacts, heat production, and ferromagnetism of Guglielmi detachable coils. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 497 OP 501 VO 18 IS 3 A1 Hartman, J A1 Nguyen, T A1 Larsen, D A1 Teitelbaum, G P YR 1997 UL http://www.ajnr.org/content/18/3/497.abstract AB The Guglielmi detachable coil, a platinum microcoil used in the endovascular treatment of intracranial aneurysms, was studied in vitro for its MR imaging artifacts, heat production, and ferromagnetism. In addition, imaging artifacts were studied in vivo in eight patients who had undergone therapeutic placement of these coils. These devices displayed a very low level of MR artifact and no ferromagnetism or heat production. We conclude that the Guglielmi detachable coil is compatible with MR imaging in terms of both safety and image quality.