View clinical trials related to Intracranial Aneurysm.
Filter by:Intracranial aneurysm (IA) is a cerebrovascular disorder in which the weakness of a cerebral artery wall causes a localized dilation of the blood vessel. Intracranial aneurysm can develop and rupture, and about 85% of spontaneous subarachnoid hemorrhage (SAH) cases are caused by the rupture of Intracerebral aneurysm. Two treatments are available globally: microsurgical clipping and endovascular treatment. Endovascular treatment of Intracerebral aneurysms using detachable platinum coils ( was introduced in 1990 by Guido Guglielmi, an Italian neurosurgeon ) of different shapes and sizes are deposited into the aneurysm through a microcatheter, which reduces the blood flow and induces thrombus formation . Wide neck aneurysm defined by neck diameter greater than 4 mm or dome-to-neck ratio less than 2 Despite advances in endovascular techniques , the treatment of wide-necked aneurysms remains problematic . Endovascular treatment of intracranial aneurysms is associated with lower morbidity and mortality rates and faster recovery compared with traditional microsurgical clipping. In wide-necked Intracerebral aneurysms, complete coil embolization is often technically difficult owing to the risks of distal coil migration or coil impingement on the parent vessel . Complete coil embolization using a single microcatheter without a supporting device in cases of wide-necked Intracerebral aneurysm is technically difficult. Total occlusion rates have increased recently as a result of the advancement of supporting devices These may include balloon remodeling, use of three-dimensional (3D) coils (Russian Doll Technique), combined use of stents and coils (Stent assisted coiling), flow diverters, use of intrasaccular flow disruption (like WEB), Double catheter Technique or combined extra- and intrasaccular devices.
The goal of this clinical trial is to test augmented reality (AR) based neuronavigation system in surgeries for patients of brain neoplasm or cerebral vascular disease. The main questions it aims to answer are: • AR based neuronavigation system can achieve accuracy that is not inferior to conventional intraoperative navigation system. Participants will participate the study after informed consent. When participants undergo surgery for their brain tumor, we will set up 2 types of neuronavigation, conventional navigation system and developed AR based neuronavigation system. Surgeon will plan and conduct surgery based on only conventional navigation system, but 3D errors at several selected points between two types of navigation will be measured and analyzed.
The purpose of this study is to assess the efficacy and safety of Self-expanding Intracranial Stent (Tonbridge), by comparing the data obtained from Self-expanding Intracranial Stent (Zhuhai Tonbridge Medical Tech. Co., Ltd.) and LVIS/LVIS Jr. (MicroVention Europe SARL) for endovascular treatment of intracranial aneurysms.
The goal of this clinical trial is to compare intracranial aneurysm patients. The main question it aims to answer are: Which heparinization regimen is most beneficial to patients during surgery for intracranial aneurysms. Participants will be randomized to different intraoperative heparinization regimens: (i) 50 U/kg intravenous (IV) at 1-h intervals reduced by half to a minimum of 1000 u/h; (ii) 70 U/kg IV at 1-h intervals reduced by half to a minimum of 1000 u/h. MRI will be performed within 72 h after surgery, and the DWI sequence of MRI will be analyzed. If there is a comparison group: Researchers will compare different intraoperative heparinization protocol groups to see which dose of intraoperative heparin has the best prognosis for use.
Purpose: Examination of microangiopathic changes that may develop after flow-directed stenting of intracranial aneurysms with susceptibility-weighted imaging (SWI), and vessel wall imaging (VWI) of vessel wall inflammation that may be associated with stenosis in the stented vessel and rupture of the aneurysm. Methods: SWI and VWI examinations will be performed before and after treatment in patients who are planned for flow-directing aneurysm treatment. Clinical follow-up of the cases will be performed during the first 3 months post-procedure. At the end of the 3rd month, SAG and DDG findings related to and unrelated to intracranial hemorrhage will be detected by control imaging.
Cerebral aneurysms are common changes in intracranial angioarchitecture. Unruptured aneurysms are increasingly identified thanks to the imaging techniques used in daily clinical practice. Since bleeding remains a highly dramatic event burdened by significant morbidity-mortality (about 50%), endovascular therapy, in combination with classic surgical therapy, is an essential element in contemporary medicine. Endovascular and surgical treatment represent the standard of care. The rationale of this study is to identify clinical and radiological characteristics, mainly neuro-radiological ones, not fully explored in previous studies, which can help predict the outcome of patients affected by cerebral aneurysm. The study will have the characteristics of a retrospective study on patients with cerebral aneurysm treated at our center from 1 January 2015 to 31 December 2023. Objective of the study is the multidimensional evaluation in patients with cerebral aneurysms, ruptured and unruptured, undergoing an endovascular embolization procedure or surgical treatment.
the goal of this clinical trail is to evaluate the efficiency and safety of intracranial aneurysm assistive software in the preoperative assessment. The trail is designed as retrospective, multicenter, controlled clinical trail. Collecting probable cases images retrospectively according to inclusion criteria and exclusion criteria strictly. Controlling bias strictly, to make sure the efficiency and safety of intracranial aneurysm assistive software is evaluated reliably and precisely. In our trail, software-assisstant planning controls against experienced-surgeon-independent planning，which aims to avoid bias effictively and eliminate non-test interferences.
This is a multi-center, prospective, propensity matched twin armed study conducted on 50 patients in the experimental arm followed for 18 months after intervention evaluating cost effectiveness, safety and efficacy of therapy.
Intracranial aneurysm is the main cause of subarachnoid hemorrhage, and the incidence of subarachnoid hemorrhage in Chinese population is about 5%. The intervention of unruptured intracranial aneurysms is controversial because of its great harm after natural rupture and bleeding, and about a quarter of patients still have poor prognosis through existing invasive treatment methods. How to accurately determine the instability risk of unruptured intracranial aneurysms is the key to resolve this controversy. In previous studies, the stability of intracranial aneurysms involves many characteristics, and the sample size is small. Most of them are retrospective studies and studies on the status after change (rupture/growth). Therefore, the relevant risk factors are not clear at present, and there is still a lack of reliable prediction model. Based on the above facts, this study proposed based on the national hundred regional medical institutions set up the network registration platform of unruptured intracranial aneurysms, real time and openness of Internet, through the way of case resource sharing build unruptured intracranial aneurysm queue, collecting clinical characteristics, imaging features, hemodynamic detection of biological samples and the results of the analysis data, And observe them for two years. The artificial intelligence platform of Tonglian Medical Health was used to integrate and analyze and learn all the data, and then the risk factors related to the stability of intracranial aneurysms within two years were obtained, and the stability prediction model of unruptured intracranial aneurysms was constructed. This study will build the largest network registration platform and population follow-up cohort of unruptured intracranial aneurysms in China, and put forward a prediction model for the stability of unruptured intracranial aneurysms by integrating the multi-dimensional factors of intracranial aneurysms, so as to provide a powerful auxiliary judgment tool for the clinical decision-making of this disease.
The aim of the study is to assess the safe and successful use of the SmartGUIDE guidewire in neuro interventions and to compare to standard of care guidewires on the market.