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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

Authors
 Nam Lee  ;  Jin Young Jung  ;  Seung Kon Huh  ;  Dong Joon Kim  ;  Dong Ik Kim  ;  Jinna Kim 
Citation
 JOURNAL OF KOREAN NEUROSURGICAL SOCIETY, Vol.47(6) : 437-441, 2010 
Journal Title
 JOURNAL OF KOREAN NEUROSURGICAL SOCIETY 
ISSN
 2005-3711 
Issue Date
2010
Keywords
Dural ring ; Internal carotid artery ; Magnetic resonance imaging ; Paraclinoid aneurysms
Abstract
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.
Files in This Item:
T201002816.pdf Download
DOI
10.3340/jkns.2010.47.6.437
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Dong Ik(김동익)
Kim, Dong Joon(김동준) ORCID logo https://orcid.org/0000-0002-7035-087X
Kim, Jinna(김진아) ORCID logo https://orcid.org/0000-0002-9978-4356
Jung, Jin Young(정진영)
Huh, Seung Kon(허승곤)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/101760
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