Subarachnoid Hemorrhage Hidenori ENDO 1 , Miki FUJIMURA 2 , Teiji TOMINAGA 3 1Department of Neurosurgery, Kohnan Hospital 2Department of Neurosurgery, Graduate School of Medicine, Hokkaido University 3Department of Neurosurgery, Tohoku University Graduate School of Medicine Keyword: くも膜下出血 , 脳動脈瘤 , 脳動脈解離 , MRI , vessel wall imaging , subarachnoid hemorrhage , SAH , cerebral aneurysm , arterial dissection pp.220-228
Published Date 2021/3/10
DOI https://doi.org/10.11477/mf.1436204382
  • Abstract
  • Look Inside
  • Reference

 Intracranial aneurysms or arterial dissections are major causes of subarachnoid hemorrhage(SAH). Early surgical or endovascular repair of the bleeding source is crucial because rebleeding mostly occurs within a few days after the initial attack. Radiological examination is an initial step for the appropriate diagnosis of ruptured intracranial aneurysms and arterial dissections. However, misdiagnosis may occur, especially in patients with minor bleeding or multiple aneurysms. In addition to computed tomography, magnetic resonance imaging, including FLAIR and SWI, and T2WI are useful for detecting minor SAH. Vessel-wall imaging has recently been applied to diagnosing the site of rupture in patients with multiple cerebral aneurysms or microaneurysms, but not to assessing the instability of unruptured cerebral aneurysms or intracranial arterial dissections. In this article, we discuss the current radiological modalities and their usefulness for diagnosing SAH.

Copyright © 2021, Igaku-Shoin Ltd. All rights reserved.


電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院