RT Journal Article SR Electronic T1 Use of a coil introducer to shape microcatheters. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 521 OP 522 VO 15 IS 3 A1 R Ernst A1 T Tomsick YR 1994 UL http://www.ajnr.org/content/15/3/521.abstract AB We have found that an angled tip with a 40-degree angle and a distal length of 1 to 3 mm can be useful in subselecting intracranial vessels whose origins are otherwise difficult to catheterize. In addition, curves can be introduced by shaping the coil introducer as needed. These shapes can be safely formed using a coil introducer inserted in a retrograde fashion and fixed in boiling water.