RT Journal Article SR Electronic T1 Blood Brain–Barrier Disruption of Nonionic Iodinated Contrast Medium Following Coil Embolization of a Ruptured Intracerebral Aneurysm JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1783 OP 1786 VO 25 IS 10 A1 Uchiyama, Yusuke A1 Abe, Toshi A1 Hirohata, Masaru A1 Tanaka, Norimitsu A1 Kojima, Kazuyuki A1 Nishimura, Hiroshi A1 Norbash, Alexander M. A1 Hayabuchi, Naofumi YR 2004 UL http://www.ajnr.org/content/25/10/1783.abstract AB Summary: Few reports of temporary disruption of the blood-brain barrier (BBB) following neurointerventional procedures, presumably caused by nonionic radiographic contrast medium (CM), exist in the literature. We described such a case in a 72-year-old man presenting with acute subarachnoid hemorrhage, who underwent coil embolization of a ruptured anterior communicating artery complex aneurysm. At the time of his follow-up CT examination, a large amount of iodine was found in the cerebrospinal fluid (CSF). Because of this experience, the iodine concentration in the CSF of five other patients who also underwent an intracranial endovascular procedure was measured. It was concluded that this increased iodine might have been caused by temporary leakage or breakdown of the BBB. Even if the total amount of CM may not be excessive, the disproportionately high concentration injected into a single vascular territory may pose a unique set of variables increasing the risk of BBB disruption.