JNET Pub Date : 2019-01-01 DOI: 10.5797/JNET.TN.2017-0122

Mitsuhiro Iwasaki, M. Saito, Akihiro Nemoto, Takanori Suzuki, C. Hikita, Shinya Fukuta, Hiroaki Sato, M. Morimoto

引用次数: 2

Thrombus in the Superior Sagittal Sinus Was Successfully Aspirated by Coaxial Catheter Technique: A Technical Case Report 同轴导管技术成功吸出上矢状窦血栓1例

JNET Pub Date : 2019-01-01 DOI: 10.5797/JNET.TN.2018-0038

Shoko Fujii, M. Yoshimura, Shin Hirota, Juri Kiyokawa, Shinji Yamamoto

引用次数: 0

Scaffolding Technique: A New Double-catheter Technique for Coil Embolization of Wide-necked Aneurysms 支架技术:一种用于宽颈动脉瘤线圈栓塞的双导管新技术

JNET Pub Date : 2019-01-01 DOI: 10.5797/JNET.TN.2018-0074

Jun Morioka, K. Murao, K. Miyake, H. Miwa

{"title":"Scaffolding Technique: A New Double-catheter Technique for Coil Embolization of Wide-necked Aneurysms","authors":"Jun Morioka, K. Murao, K. Miyake, H. Miwa","doi":"10.5797/JNET.TN.2018-0074","DOIUrl":"https://doi.org/10.5797/JNET.TN.2018-0074","url":null,"abstract":"Objective: We herein report a new technique using double microcatheters to treat a wide-necked aneurysm in which the neck is incorporated with the parent artery. Case Presentations: Case 1: The patient was a 71-year-old woman with a large, wide-necked unruptured aneurysm of the basilar bifurcation area with the right posterior cerebral artery (PCA) incorporated in the aneurysm sac. We previously placed a scaffolding coil around the right PCA orifice via a microcatheter placed near the right PCA to avoid a framing coil via another microcatheter involving the right PCA orifice. After confirming that the framing coil did not obstruct the right PCA flow, the “scaffolding” coil was repositioned in the framing coil. Complete occlusion of the aneurysm was achieved with the stable frame of these two coils. Case 2: The patient was a 68-year-old woman who presented with subarachnoid hemorrhaging due to a ruptured aneurysm with a wide neck of the basilar bifurcation. Coiling with a conventional double-catheter technique failed to form suitable framing because the tips of both microcatheters faced the same direction (posterior) even after changing the shapes of the tips. After leading the tip of one microcatheter to face the anterior direction by inserting part of the first coil via the microcatheter, we placed the second coil via another microcatheter with its tip facing posteriorly. The second coil then came to functions as the scaffolding, holding the tip of the first catheter anteriorly. A stable frame was made when the remaining part of the first coil was deployed. Conclusion: We termed this method the “scaffolding technique.” This technique is an effective and safe option for treating wide-necked aneurysms.","PeriodicalId":34768,"journal":{"name":"JNET","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5797/JNET.TN.2018-0074","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71062080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Overlapping Stent-assisted Coil Embolization for Ruptured Blood Blister-like Aneurysms of Basilar Trunk: Two Case Reports 重叠支架辅助线圈栓塞治疗基底干破裂血泡样动脉瘤2例报告

JNET Pub Date : 2019-01-01 DOI: 10.5797/JNET.CR.2018-0047

Yusuke Morinaga, K. Nii, A. Eto, Hayatsura Hanada, Takafumi Mitsutake, Fumihiro Hiraoka, Ritsurou Inoue, K. Sakamoto, M. Tsutsumi

引用次数: 1

A Case of High-grade Arteriovenous Malformation Manifesting as Trigeminal Neuralgia Successfully Treated by Embolization in Multimodal Treatment 以三叉神经痛为表现的高度动静脉畸形多模式栓塞治疗成功1例

JNET Pub Date : 2019-01-01 DOI: 10.5797/JNET.CR.2019-0005

M. Kugai, T. Suyama, M. Kitano, H. Hasegawa, Y. Tominaga, S. Tominaga

引用次数: 1

Hyperperfusion Immediately after Reperfusion by Thrombectomy May Predict Hemorrhagic Transformation 取栓后再灌注后立即高灌注可预测出血转化

JNET Pub Date : 2019-01-01 DOI: 10.5797/JNET.OA.2018-0046

T. Yoshihara, R. Kanazawa, H. Ohbuchi, T. Uchida, T. Higashida, Naoyuki Arai, Manabu Osakabe, Yuichi Takahashi

{"title":"Hyperperfusion Immediately after Reperfusion by Thrombectomy May Predict Hemorrhagic Transformation","authors":"T. Yoshihara, R. Kanazawa, H. Ohbuchi, T. Uchida, T. Higashida, Naoyuki Arai, Manabu Osakabe, Yuichi Takahashi","doi":"10.5797/JNET.OA.2018-0046","DOIUrl":"https://doi.org/10.5797/JNET.OA.2018-0046","url":null,"abstract":"Objective: To evaluate cerebral blood ﬂ ow immediately after reperfusion following thrombectomy for acute large vessel occlusion, and to examine whether cerebral blood ﬂ ow after reperfusion is related to hemorrhagic transformation. Methods: The patients with acute large vessel occlusion in the anterior circulation who obtained reperfusion by thrombectomy were included. Cerebral blood ﬂ ow was evaluated using single photon emission computed tomography (SPECT) within 6 hours after reperfusion. The patients were divided into two groups with or without hemorrhagic transformation, and basic characteristics, the ratio of cerebral blood ﬂ ow (aﬀ ected-side to unaﬀ ected-side ratio) in the perfusion area of the middle cerebral artery (MCA asymmetry index), and functional prognosis were compared among two groups. Results: In all, 23 patients were included; 11 presented hemorrhagic transformation, and 12 did not. The hemorrhagic group exhibited signiﬁ cantly higher MCA asymmetry index than the non-hemorrhagic group (median: 1.54 [1.30–1.83] vs. 1.12 [1.07–1.24], respectively, P = 0.02), and a lower rate tendency of modiﬁ ed Rankin Scale (mRS): 0-2 after 3 months (1 patient [9%] vs. 6 patients [50%], respectively, P = 0.06). Conclusion: In patients with successful reperfusion by thrombectomy, hemorrhagic transformation is predisposed to occur when high MCA asymmetry index is presented. Care should be taken in periprocedural management of blood pressure and sedation for those with high MCA asymmetry index.","PeriodicalId":34768,"journal":{"name":"JNET","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5797/JNET.OA.2018-0046","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71058244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Ultra-small Catheter Shaping Method with a Sheath Dilator: Usefulness for Coil Embolization of Cerebral Aneurysms 带鞘扩张器的超小导管成形方法:用于脑动脉瘤线圈栓塞

JNET Pub Date : 2019-01-01 DOI: 10.5797/JNET.OA.2018-0018

H. Matsumoto, Hirokazu Nishiyama, Yoshiaki Tetsuo, Hideki Takemoto

{"title":"Ultra-small Catheter Shaping Method with a Sheath Dilator: Usefulness for Coil Embolization of Cerebral Aneurysms","authors":"H. Matsumoto, Hirokazu Nishiyama, Yoshiaki Tetsuo, Hideki Takemoto","doi":"10.5797/JNET.OA.2018-0018","DOIUrl":"https://doi.org/10.5797/JNET.OA.2018-0018","url":null,"abstract":"Objective: We devised a method to readily create an ultra-small shape at the microcatheter tip using a sheath dilator. In the present study, we introduce the creation method and report its usefulness. Methods: For mandrel formation, 7 Fr. or 4 Fr. sheath dilators were used. 1) A small, round loop was prepared by rolling a mandrel on a sheath dilator. 2) The mandrel with an ultra-small loop was inserted into the tip of a straight-type microcatheter. 3) The microcatheter tip was heated using a heat gun. 4) The mandrel was removed from the microcatheter tip. Using the catheter which has ultra-small shaped tip, coil embolization was performed. Results: The mandrel loop diameter was 3 mm when a 7 Fr. sheath dilator was used. It was 2 mm when a 4 Fr. sheath dilator was used. It was possible to create various ultra-small shapes, such as J, S, and pigtail shapes, at the catheter tip. Ultra-small shaped catheters were used to treat 25 cerebral aneurysms. In all patients, catheters could be readily guided into the aneurysms, and their stability after insertion was favorable. Conclusion: The ultra-small catheter shaping method with a sheath dilator facilitated the creation of various ultra-small shapes measuring 2–3 mm in diameter at the microcatheter tip.","PeriodicalId":34768,"journal":{"name":"JNET","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5797/JNET.OA.2018-0018","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71058635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

De Novo Multiple Dural Arteriovenous Fistulae Successfully Treated with Transarterial Embolization Using Low-concentration N-butyl-2-cyanoacrylate: A Case Report 低浓度N-丁基-2-氰基丙烯酸酯动脉栓塞治疗De Novo多发性硬脑膜动静脉瘘1例

JNET Pub Date : 2018-09-12 DOI: 10.5797/JNET.CR.2017-0132

Daisuke Izawa, O. Masuo, Takumi Kawaguchi, Rie Yako, N. Nakao

引用次数: 0

Transradial Neuroendovascular Treatment for Anterior Circulation Lesions: An Initial Experience with a 6 Fr Guiding Sheath 经桡神经血管内治疗前循环病变：6Fr导引鞘的初步经验

JNET Pub Date : 2018-08-09 DOI: 10.5797/JNET.OA.2018-0055

Y. Hanaoka, J. Koyama, Alhusain Nagm, Toshiya Uchiyama, Takafumi Kiuchi, Keisuke Kamiya, Takaaki Kamijo, T. Ogiwara, T. Horiuchi, K. Hongo

{"title":"Transradial Neuroendovascular Treatment for Anterior Circulation Lesions: An Initial Experience with a 6 Fr Guiding Sheath","authors":"Y. Hanaoka, J. Koyama, Alhusain Nagm, Toshiya Uchiyama, Takafumi Kiuchi, Keisuke Kamiya, Takaaki Kamijo, T. Ogiwara, T. Horiuchi, K. Hongo","doi":"10.5797/JNET.OA.2018-0055","DOIUrl":"https://doi.org/10.5797/JNET.OA.2018-0055","url":null,"abstract":"Objective: To clarify the usefulness and safety of neuroendovascular treatment with a 6 Fr guiding sheath via the right radial artery for anterior circulation lesions. Methods: A total of 20 patients (carotid artery stenting: 11 patients, coil embolization of cerebral aneurysms: nine patients) who underwent neuroendovascular treatment via the right radial artery under general anesthesia, between September 2016 and June 2017, were included in this study. We retrospectively analyzed 1) the pertinent anatomy of the target-side common carotid artery and the aortic arch, 2) devices, 3) method to advance the guiding sheath into the common carotid artery, 4) hemostasis at the puncture site, and 5) outcome (success rate, perioperative complications, and complications at the site of puncture). Results: In all patients, a 6 Fr guiding sheath could be guided into the common carotid artery, and treatment was accomplished. Furthermore, there was no perioperative or puncture-site complication. Conclusion: Transradial neuroendovascular treatment is considered as a safe and successful choice for anterior circulation lesions.","PeriodicalId":34768,"journal":{"name":"JNET","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41717882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Two Patients with a Rapid Increase in the Ocular Pressure after Carotid Artery Stenting for Cervical Internal Carotid Artery Stenosis with Ocular Ischemic Syndrome 颈内动脉狭窄伴眼缺血综合征行颈动脉支架植入术后眼压快速升高2例

JNET Pub Date : 2018-07-27 DOI: 10.5797/JNET.CR.2018-0039

Tomohiro Kawano, Kiyotaka Saito, Takako Hidaka, N. Kajihara, H. Chuman, H. Ohta, K. Yokogami, H. Takeshima

{"title":"Two Patients with a Rapid Increase in the Ocular Pressure after Carotid Artery Stenting for Cervical Internal Carotid Artery Stenosis with Ocular Ischemic Syndrome","authors":"Tomohiro Kawano, Kiyotaka Saito, Takako Hidaka, N. Kajihara, H. Chuman, H. Ohta, K. Yokogami, H. Takeshima","doi":"10.5797/JNET.CR.2018-0039","DOIUrl":"https://doi.org/10.5797/JNET.CR.2018-0039","url":null,"abstract":"Objective: We report two patients with a rapid increase in the ocular pressure after carotid artery stenting (CAS) for cervical internal carotid artery stenosis with ocular ischemic syndrome. Case Presentations: Case 1 was a 67-year-old male. Case 2 was a 70-year-old male. In the two patients, a reduction in vision and transient hemiparesis had persisted for a few months, leading to a diagnosis of severe internal carotid artery stenosis. Furthermore, they were diagnosed with ocular ischemic syndrome and neovascular glaucoma. Panretinal photocoagulation was performed before CAS in the Department of Ophthalmology. In Case 1, ocular pain appeared 9 days after CAS. In Case 2, it appeared the day after CAS, and increased ocular pressure was noted. After conservative treatment, trabeculectomy was performed, but the visual prognosis was unfavorable. Conclusion: In patients with severe internal carotid artery stenosis and ocular ischemic syndrome, there may be a rapid increase in the ocular pressure after revascularization. Therefore, it is necessary to establish a cross-sectional treatment strategy in cooperation with ophthalmologists.","PeriodicalId":34768,"journal":{"name":"JNET","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5797/JNET.CR.2018-0039","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43705927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

JNET最新文献