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Distinction between Intradural and Extradural Aneurysms Involving the Paraclinoid Internal Carotid Artery with T2-Weighted Three-Dimensional Fast Spin-Echo Magnetic Resonance Imaging.
MedLine Citation:
PMID:  20617089     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: The precise intra- vs. extradural localization of aneurysms involving the paraclinoid internal carotid artery is critical for the evaluation of patients being considered for aneurysm surgery. The purpose of this study was to investigate the clinical usefulness of T2-weighted three-dimensional (3-D) fast spin-echo (FSE) magnetic resonance (MR) imaging in the evaluation of unruptured paraclinoid aneurysms.
METHODS: Twenty-eight patients with unruptured cerebral aneurysms in their paraclinoid regions were prospectively evaluated using a T2-weighted 3-D FSE MR imaging technique with oblique coronal sections. The MR images were assessed for the location of the cerebral aneurysm in relation to the dural ring and other surrounding anatomic compartments, and were also compared with the surgical or angiographic findings.
RESULTS: All 28 aneurysms were identified by T2-weighted 3D FSE MR imaging, which showed the precise anatomic relationships in regards to the subarachnoid space and the surrounding anatomic structures. Consequently, 13 aneurysms were determined to be intradural and the other 15 were deemed extradural as they were confined to the cavernous sinus. Of the 13 aneurysms with intradural locations, three superior hypophyseal artery aneurysms were found to be situated intradurally upon operation.
CONCLUSION: High-resolution T2-weighted 3-D FSE MR imaging is capable of confirming whether a cerebral aneurysm at the paraclinoid region is intradural or extradural, because of the MR imaging's high spatial resolution. The images may help in identifying patients with intradural aneurysms who require treatment, and they also can provide valuable information in the treatment plan for paraclinoid aneurysms.
Authors:
Nam Lee; Jin Young Jung; Seung Kon Huh; Dong Joon Kim; Dong Ik Kim; Jinna Kim
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Publication Detail:
Type:  Journal Article     Date:  2010-06-30
Journal Detail:
Title:  Journal of Korean Neurosurgical Society     Volume:  47     ISSN:  1598-7876     ISO Abbreviation:  J Korean Neurosurg Soc     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-07-09     Completed Date:  2011-07-14     Revised Date:  2013-05-29    
Medline Journal Info:
Nlm Unique ID:  101467054     Medline TA:  J Korean Neurosurg Soc     Country:  Korea (South)    
Other Details:
Languages:  eng     Pagination:  437-41     Citation Subset:  -    
Affiliation:
Department of Neurosurgery, National Insurance Corporation Ilsan Hospital, Goyang, Korea.
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