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Research ArticleINTERVENTIONAL

Thromboembolic Events Associated with Guglielmi Detachable Coil Embolization with Use of Diffusion-Weighted MR Imaging. Part II. Detection of the Microemboli Proximal to Cerebral Aneurysm

Akio Soeda, Nobuyuki Sakai, Kenichi Murao, Hideki Sakai, Koji Ihara, Naoaki Yamada, Satoshi Imakita and Izumi Nagata
American Journal of Neuroradiology November 2003, 24 (10) 2035-2038;
Akio Soeda
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Nobuyuki Sakai
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Kenichi Murao
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Hideki Sakai
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Koji Ihara
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Naoaki Yamada
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Satoshi Imakita
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Izumi Nagata
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Abstract

BACKGROUND AND PURPOSE: The purpose of this study was to document the incidence and radiologic appearance of thromboembolic events during Guglielmi detachable coil (GDC) embolization for asymptomatic basilar artery (BA) bifurcation and BA-superior cerebellar artery (SCA) aneurysms by using diffusion-weighted (DW) MR imaging, with special emphasis on the evidence of thromboembolic events in vascular territories proximal from the treated aneurysm, which cause cerebellar infarction, and to discuss which step of the procedure (aneurysm or catheter manipulation) may play a role for most thromboembolic events.

METHODS: Since 1999, 38 asymptomatic BA bifurcation and BA-SCA aneurysms were treated with GDCs at the National Cardiovascular Center. DW studies were performed for 26 patients between 2 and 5 days after GDC embolizations. All DW images were reviewed by two radiologists for depiction of abnormalities. These findings were retrospectively evaluated with clinical and technical factors of thromboembolic events.

RESULTS: DW images showed new hyperintense lesions in 18 patients (69%), with seven (27%) incurring neurologic deteriorations. All symptomatic patients fully recovered by discharge. Fourteen (78%) of 18 patients showed new lesions proximal to the treated aneurysm; that is, in the cerebellar hemispheres. In three cases treated with the balloon-assisted technique, new hyperintense lesions were seen.

CONCLUSION: In our experience, most thromboembolic events related to the use of the GDC embolization may be caused by catheter manipulation, especially in the case of the balloon-assisted technique. Caution should be exercised in the handling of catheters. Furthermore, a softer and smaller caliber catheter and simple GDC technique should be considered.

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American Journal of Neuroradiology: 24 (10)
American Journal of Neuroradiology
Vol. 24, Issue 10
1 Nov 2003
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Thromboembolic Events Associated with Guglielmi Detachable Coil Embolization with Use of Diffusion-Weighted MR Imaging. Part II. Detection of the Microemboli Proximal to Cerebral Aneurysm
Akio Soeda, Nobuyuki Sakai, Kenichi Murao, Hideki Sakai, Koji Ihara, Naoaki Yamada, Satoshi Imakita, Izumi Nagata
American Journal of Neuroradiology Nov 2003, 24 (10) 2035-2038;

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Thromboembolic Events Associated with Guglielmi Detachable Coil Embolization with Use of Diffusion-Weighted MR Imaging. Part II. Detection of the Microemboli Proximal to Cerebral Aneurysm
Akio Soeda, Nobuyuki Sakai, Kenichi Murao, Hideki Sakai, Koji Ihara, Naoaki Yamada, Satoshi Imakita, Izumi Nagata
American Journal of Neuroradiology Nov 2003, 24 (10) 2035-2038;
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