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. 2009 Jun 20;1(1):20–23. doi: 10.1159/000224714

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Copyright © 2009 by S. Karger AG, Basel

This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial-No-Derivative-Works License (http://creativecommons.org/licenses/by-nc-nd/3.0/). Users may download, print and share this work on the Internet for noncommercial purposes only, provided the original work is properly cited, and a link to the original work on http://www.karger.com and the terms of this license are included in any shared versions.

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Fig. 1 — Baseline CT, MRI during thrombolysis, and delayed angiography. Baseline CT (left top) before intravenous thrombolysis shows a subtle early ischemic sign in the left frontal lobe. Diffusion image (left bottom) during tPA infusion demonstrates a hyperacute ischemia, and MR angiography (right top) shows no arterial occlusions and a suspected small aneurysm at the anterior communicating artery. Delayed cerebral angiography (right bottom) detects an unruptured aneurysm with a size of 7 mm at the anterior communicating artery.