scholarly journals Subarachnoid Hyperattenuation on Flat Panel Detector–Based Conebeam CT Immediately after Uneventful Coil Embolization of Unruptured Intracranial Aneurysms

2012 ◽  
Vol 34 (3) ◽  
pp. 577-582 ◽  
Author(s):  
Y. Shinohara ◽  
M. Sakamoto ◽  
H. Takeuchi ◽  
T. Uno ◽  
T. Watanabe ◽  
...  
Keyword(s):  
Coil Embolization ◽  
Intracranial Aneurysms ◽  
Flat Panel ◽  
Flat Panel Detector ◽  
Unruptured Intracranial Aneurysms ◽  
Conebeam Ct

Outcomes following aneurysmal coil embolization with intentionally shortened low-profile visible intraluminal support stent deployment

2021 ◽  
pp. 197140092110269
Author(s):  
Kenji Yatomi ◽  
Yumiko Mitome-Mishima ◽  
Takashi Fujii ◽  
Kohsuke Teranishi ◽  
Hidenori Oishi ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Coil Embolization ◽  
Intracranial Aneurysms ◽  
Perioperative Complications ◽  
Flow Diversion ◽  
Stent Deployment ◽  
Coverage Ratio ◽  
Low Profile ◽  
Unruptured Intracranial Aneurysms

Purpose Among all stents available for neuroendovascular therapy, the low-profile visible intraluminal support stent bears the highest metal coverage ratio. We deployed a low-profile visible intraluminal support stent with a delivery wire or/and microcatheter system push action to shorten the low-profile visible intraluminal support stent and thus achieve a flow diversion effect. We report our single-institution experience with the use of low-profile visible intraluminal support stents for intentionally shortened deployment (shortening group) and non-shortened deployment (non-shortening group) for unruptured intracranial aneurysms. Methods We retrospectively reviewed the medical records of 130 patients with 131 intracranial aneurysms who were treated with low-profile visible intraluminal support stent-assisted coil embolization from February 2016–January 2019. All perioperative complications were noted. Every 6 months, we re-examined the patients with cerebral angiography or magnetic resonance angiography. The outcomes of aneurysm occlusion were evaluated by the modified Raymond–Roy occlusion classification. We used the finite element method and computational fluid dynamics to investigate the hemodynamics after shortened low-profile visible intraluminal support stent deployment. Results Immediately after treatment, the modified Raymond-Roy occlusion classification was significantly better in the shortening group than in the non-shortening group ( p<0.05). The latest angiographic outcomes showed the same tendency. Hemodynamic analysis by computational fluid dynamics suggested an adequate flow diversion effect with the use of our intentional shortening method. Conclusions Stent-assisted coil embolization using this technique showed good results of a high complete occlusion rate and low complication rate. These findings suggest that shortened low-profile visible intraluminal support stent deployment yields a flow diversion effect and may lead to early intra-aneurysmal thrombus formation.

scholarly journals Flat Panel Detector Angiographic CT for Stent-Assisted Coil Embolization of Broad-Based Cerebral Aneurysms

2007 ◽  
Vol 28 (10) ◽  
pp. 1902-1908 ◽  
Author(s):  
G. Richter ◽  
T. Engelhorn ◽  
T. Struffert ◽  
M. Doelken ◽  
O. Ganslandt ◽  
...  
Keyword(s):  
Coil Embolization ◽  
Cerebral Aneurysms ◽  
Flat Panel ◽  
Flat Panel Detector ◽  
Angiographic Ct

Delayed Bleeding of Unruptured Intracranial Aneurysms After Coil Embolization: A Retrospective Case Series

2021 ◽  
Vol 149 ◽  
pp. e135-e145
Author(s):  
Kazuhiro Ando ◽  
Hitoshi Hasegawa ◽  
Tomoaki Suzuki ◽  
Shoji Saito ◽  
Kohei Shibuya ◽  
...  
Keyword(s):  
Coil Embolization ◽  
Intracranial Aneurysms ◽  
Case Series ◽  
Retrospective Case ◽  
Delayed Bleeding ◽  
Retrospective Case Series ◽  
Unruptured Intracranial Aneurysms

scholarly journals Long-term outcomes of coil embolization of unruptured intracranial aneurysms

2018 ◽  
Vol 129 (6) ◽  
pp. 1492-1498 ◽  
Author(s):  
Masaomi Koyanagi ◽  
Akira Ishii ◽  
Hirotoshi Imamura ◽  
Tetsu Satow ◽  
Kazumichi Yoshida ◽  
...  
Keyword(s):  
Coil Embolization ◽  
Intracranial Aneurysms ◽  
Additional Treatment ◽  
Long Term Outcomes ◽  
Unruptured Intracranial Aneurysms ◽  
Risk Of Rupture ◽  
Long Term Follow Up ◽  
Multiple Stroke

OBJECTIVELong-term follow-up results of the treatment of unruptured intracranial aneurysms (UIAs) by means of coil embolization remain unclear. The aim of this study was to analyze the frequency of rupture, retreatment, stroke, and death in patients with coiled UIAs who were followed for up to 20 years at multiple stroke centers.METHODSThe authors retrospectively analyzed data from cases in which patients underwent coil embolization between 1995 and 2004 at 4 stroke centers. In collecting the late (≥ 1 year) follow-up data, postal questionnaires were used to assess whether patients had experienced rupture or retreatment of a coiled aneurysm or any stroke or had died.RESULTSOverall, 184 patients with 188 UIAs were included. The median follow-up period was 12 years (interquartile range 11–13 years, maximum 20 years). A total of 152 UIAs (81%) were followed for more than 10 years. The incidence of rupture was 2 in 2122 aneurysm-years (annual rupture rate 0.09%). Nine of the 188 patients with coiled UIAs (4.8%) underwent additional treatment. In 5 of these 9 cases, the first retreatment was performed more than 5 years after the initial treatment. Large aneurysms were significantly more likely to require retreatment. Nine strokes occurred over the 2122 aneurysm-years. Seventeen patients died in this cohort.CONCLUSIONSThis study demonstrates a low risk of rupture of coiled UIAs with long-term follow-up periods of up to 20 years. This suggests that coiling of UIAs could prevent rupture for a long period of time. However, large aneurysms might need to be followed for a longer time.

Delayed Intracranial Parenchymal Changes After Aneurysmal Coil Embolization Procedures for Unruptured Intracranial Aneurysms

2019 ◽  
Vol 19 (1) ◽  
pp. 76-83 ◽  
Author(s):  
Ichiro Nakagawa ◽  
Hun Soo Park ◽  
Masashi Kotsugi ◽  
Yudai Morisaki ◽  
Takeshi Wada ◽  
...  
Keyword(s):  
Coil Embolization ◽  
Intracranial Aneurysms ◽  
Perioperative Complications ◽  
White Matter Lesions ◽  
Steroid Treatment ◽  
Cerebral White Matter ◽  
Nickel Allergy ◽  
Skin Patch ◽  
Unruptured Intracranial Aneurysms ◽  
Inflammatory Changes

Abstract BACKGROUND With the recent advances in endovascular treatment devices, it has become standard in wide-neck or large intracranial aneurysms to perform coil embolization with adjunctive techniques. However, device-related perioperative complications have been reported because of the use of more complex systems. OBJECTIVE To investigate patients who developed multiple parenchymal lesions after undergoing coil embolization for treating an unruptured intracranial aneurysm. METHODS This study investigated 305 consecutive patients who underwent coil embolization of unruptured intracranial aneurysms between 2015 and 2017. Delayed inflammatory changes referred to the delayed observation of multiple cerebral white matter lesions on follow-up magnetic resonance imaging at an area corresponding to the perfused area of the treatment target vessel. The timing and pattern of onset, device used, the combined use of adjunctive techniques, and the clinical course after steroid treatment were retrospectively investigated. RESULTS The 7 patients (2.3%) who showed delayed inflammatory changes were all women with a mean age of 59 yr. A mean duration from treatment to onset was 28 d. Symptoms were convulsions in 3 patients, hemiplegia in 2 patients, and homonymous hemianopia in 1 patient. All 7 patients were treated with adjunctive technique including stents, double catheter method, and balloon assist. Response to steroid treatment was satisfactory both clinically and on imaging in all 7 patients. Skin patch test was positive for nickel allergy in 2 patients. CONCLUSION Clinicians must be fully aware of symptomatic delayed inflammatory changes may occur after endovascular aneurysmal treatment with the use of various devices.

Endovascular Enterprise stent-assisted coil embolization for wide-necked unruptured intracranial aneurysms

2013 ◽  
Vol 20 (9) ◽  
pp. 1276-1279 ◽  
Author(s):  
Sung-Kyun Hwang ◽  
Gyojun Hwang ◽  
Jae Seung Bang ◽  
Chang Wan Oh ◽  
O-Ki Kwon
Keyword(s):  
Coil Embolization ◽  
Intracranial Aneurysms ◽  
Unruptured Intracranial Aneurysms
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