Ear ischemia induced by endovascular therapy for arteriovenous fistula of the sigmoid sinus: A case report.

Background: Arteriovenous fistula of the sigmoid sinus is an abnormal connection of arteries with the sigmoid sinus. Endovascular treatments of such lesions are considered safe and with low rates of complications.

Case Summary: A 62-year-old female patient underwent endovascular treatment of an arteriovenous fistula of the right sigmoid sinus on February 7, 2017, but her tinnitus was not cured.

Development and validation of an institutional nomogram for aiding aneurysm rupture risk stratification.

Rupture risk stratification is critical for incidentally detected intracranial aneurysms. Here we developed and validated an institutional nomogram to solve this issue. We reviewed the imaging and clinical databases for aneurysms from January 2015 to September 2018.

Prediction of Aneurysm Stability Using a Machine Learning Model Based on PyRadiomics-Derived Morphological Features.

Background and Purpose- Discrimination of the stability of intracranial aneurysms is critical for determining the treatment strategy, especially in small aneurysms. This study aims to evaluate the feasibility of applying machine learning for predicting aneurysm stability with radiomics-derived morphological features. Methods- Morphological features of 719 aneurysms were extracted from PyRadiomics, of which 420 aneurysms with Maximum3DDiameter ranging from 4 mm to 8 mm were enrolled for analysis.

Difference in Angiographic Characteristics Between Hemorrhagic And Nonhemorrhagic Hemispheres Associated with Hemorrhage Risk of Moyamoya Disease in Adults: A Self-Controlled Study.

Background: Here, we compare the angiographic characteristics of hemorrhagic and nonhemorrhagic hemispheres within the same adult patient with moyamoya disease (MMD) and identify the possible risk factors for initial and recurrent hemorrhage during the long-term follow-up period.

Methods: We retrospectively collected and analyzed the clinical and angiographic data of 145 consecutive adults with hemorrhagic MMD between 2004 and 2011. Separate angiographic characteristics of the hemorrhagic and nonhemorrhagic hemispheres were analyzed based on digital subtraction angiography.

Intracranial Aneurysms Associated with Moyamoya Disease in Children: Clinical Features and Long-Term Surgical Outcome.

Background: Moyamoya disease (MMD) in children was rarely associated with intracranial aneurysms. The purpose of this study was to report the clinical characteristics and long-term surgical outcomes of pediatric intracranial aneurysms accompanied with MMD.

Methods: Between October 2002 and October 2013, our department treated 9 pediatric MMD patients (aged ≤17 years) with intracranial aneurysms.

Hemorrhagic Moyamoya Disease in Children: Clinical, Angiographic features, and Long-Term Surgical Outcome.

Background And Purpose: Here, we describe the clinical, angiographic characteristics, and long-term surgical outcome of hemorrhagic moyamoya disease in children.

Methods: We retrospectively collected 374 consecutive children with moyamoya disease (hemorrhagic 30 and ischemic 344) between 2004 and 2012 in our hospital. The clinical and radiological characteristics of the hemorrhagic patients were retrospectively described and analyzed.

Endovascular Treatment of the Huge Dissecting Aneurysms Involving the Basilar Artery by the Internal Trapping Technique: Technical Note.

Background: The endovascular strategy of the huge dissecting aneurysms involving the basilar artery (BA) is controversial and challenging. This study was to investigate the clinical and angiographic outcomes of the treatment of the huge dissecting aneurysms involving the BA by the internal trapping (IT) technique.

Methods: We retrospectively studied 15 patients with the huge dissecting aneurysms involving the BA treated by the IT technique between September 2005 and September 2014 in Department of Interventional Neuroradiology of Beijing Tiantan Hospital.

Clinical effectiveness of preoperative embolization for cerebellar hemangioblastoma.

The cerebellar hemangioblastoma (CHB) has an abundant blood supply and deep anatomical location. Complete surgical resection is generally very difficult. This study investigated the safety and effectiveness of preoperative embolization followed by surgical resection of CHB in a large cohort of patients.

[Multiple factors related with intracranial hemorrhage of dural arteriovenous fistula: clinical analysis].

Objective: To discuss the relevant predicative factors of dural arteriovenous fistula (dAVF) in intracranial hemorrhage.

Methods: A total of 144 consecutive patients with dAVFs were recruited for a retrospective analysis from 1996 to 2006. The relevant factors of gender, age, fistula flow rate, arterial supply, lesion and venous drainage pattern were analyzed to evaluate the outcome of intracranial hemorrhage.

Endovascular treatment of a giant internal carotid artery bifurcation aneurysm with drainage into cavernous sinus.

This report documents the treatment of a giant aneurysm of the internal carotid artery bifurcation with a fistula to the cavernous sinus, which appeared following closed head trauma. A 39-year-old man suffered from a blunt head trauma in an automobile accident. Two weeks after the trauma, progressive chemosis of left eye was presented.

[Statistical study on correlation between cerebral arteriovenous malformation and hemodynamic aneurysms].

Objective: to explore the characteristic factors of arteriovenous malformation (AVM) which have statistically significant correlation with hemodynamic aneurysms.

Methods: from August 1999 to July 2009, the clinical and imaging indices of 363 consecutive patients with AVM were retrospectively reviewed and entirely statistically analyzed. There were 229 male patients and 137 female patients, the mean age at the time of presentation was 28 ± 13 years.

Embolization of brain arteriovenous malformations with ethylene vinyl alcohol copolymer: technical aspects.

Background: Endovascular therapy plays an important role in the treatment of brain arteriovenous malformations (BAVMs). Ethylene vinyl alcohol copolymer (Onyx) is a novel liquid embolic material. This study aimed to summarize our experience of using Onyx for embolization of BAVMs with the focus on embolization technique.

Transvenous embolization with a combination of detachable coils and Onyx for a complicated cavernous dural arteriovenous fistula.

Background: Treatment of cavernous dural arteriovenous fistulas (DAVF) is usually made by a transarterial approach. However, in many complicated patients, treatments via transarterial approaches can not be achieved, and only an operation via a transvenous approach is feasible. We aimed to study the feasibility of transarterial embolization of cavernous dural arteriovenous fistulas with a combination detachable coils and Onyx to embolize a complicated cavernous DAVF via a transvenous approach.

Endovascular treatment of wide-necked intracranial aneurysms using of "remodeling technique" with the HyperForm balloon.

Background: Aneurysms with wide-necked or a large neck/fundus ratio, especially located on an arterial bifurcation or a small artery, are challenges for interventional neuroradiologist because of the risk of coil migration or coil protrusion into the parent vessels. Our study was designed to improve the efficacy and safety of the "remodeling technique" with the HyperForm balloon for these difficult aneurysms and was confirmed by a follow-up result.

Methods: From June 2004 to September 2006, forty-two patients (20 men, 22 women) with wide-necked or large neck/fundus ratio aneurysms were treated by using the "remodeling technique" with the HyperForm balloon.

A complex cavernous sinus dural arteriovenous fistula secondary to covered stent placement for a traumatic carotid artery-cavernous sinus fistula: case report.

Authors present the case of a patient with a direct carotid artery-cavernous sinus fistula caused by head trauma in whom a self-expanding covered stent was successfully used to obliterate the fistula. However, at the 9-month follow-up an angiogram revealed a complex caroticocavernous fistula that was completely obliterated with Onyx 18 transarterially.

Transvenous embolization of cavernous dural arteriovenous fistula: report of 28 cases.

Background: Usually, cavernous dural arteriovenous fistula can be treated via transarterial approaches. However, in many complicated patients, transvenous approaches are superior to the transarterial ones because of the difficulties during a transarterial operation. In this study, we retrospectively analyzed the outcomes of 28 patients with cavernous dural arteriovenous fistula treated by transvenous embolization.

[Endovascular treatment of posterior cerebral artery aneurysm: analysis of 21 patients].

Objective: To investigate the effect of endovascular treatment on posterior cerebral artery (PCA) aneurysm.

Methods: The clinical data of 21 patients with PCA aneurysm, 12 males and 9 females, aged 3 - 60, totally 22 aneurysms, 3 located in the P1 segment, 16 (in 15 patients) on the P2 segment, and 3 being serpentine aneurysms and involving P2-3 segment, were analyzed. One patients gave up treatment, 6 patients, with 7 aneurysms, underwent aneurysm sac occlusion, and 14 patients underwent parent vessel occlusion.

[Transvenous embolization in treatment of refractory carotid-cavernous sinus fistula].

Objective: To investigate the effects of transvenous embolization in treatment of refractory carotid-cavernous sinus fistula (CCF).

Methods: Twenty-five patients of refractory CCF with 28 foci underwent transvenous embolization, femoral vein-inferior petrosal sinus approach was used in 12 of which, and femoral vein-facial vein-superior ophthalmic vein approach was used in 12 of which. The embolizing materials included controllable coils (GDC, EDC), free coil, and silk.

[Endovascular stent implantation in treatment of intracranial wide-necked aneurysms].

Objective: To evaluate the effectiveness and feasibility of treatment of intracranial wide-necked aneurysms with a new technique of Neuroform self-expanding stent combined with detachable coil.

Methods: A retrospective analysis of thirty patients with intracranial wide-necked aneurysms, 14 males and 16 females, aged 48 (18-68), wide-necked aneurysms, underwent occlusion of aneurysms using Neuroform self-expanding stent combined with detachable coil.

Results: 21 of the 30 aneurysms were completely occluded (70%) and 9 of the 30 aneurysms were incompletely occluded (30%) after initial coils embolization.

Endovascular treatment of cerebral arteriovenous malformations with Onyx embolization.

Background: In the past 5 years, new treatment materials and techniques offering a different concept in endovascular treatment have been described for cerebral arteriovenous malformations (CAVMs). The aim of this study was to assess the endovascular treatment of CAVMs by using a liquid embolic material, Onyx (Micro Therapeutics. Inc.

[A grading scale for endovascular treatment of intracranial aneurysms].

Objective: To investigate the factors influencing the embolizing plan and result of intracranial aneurysms, and to establish a new grading scale for endovascular treatment of intracranial aneurysms.

Methods: The clinical data of 156 aneurysms in 151 patients, 67 males and 84 females, aged 4-80, were prospectively collected to analyze the influences of sex, age, aneurysmal DSA manifestation (including location, shape, longest diameter, neck width and sac-neck ratio) and whether or not embolizing in acute phase on the therapeutic alternatives and immediate embolizing results.

Results: Logistic regression analyses showed that aneurysmal location (OR = 3.

[Transvenous occlusion of carotid cavernous fistula].

Objective: To evaluate the treatment of carotid cavernous fistula with the transvenous approaches.

Methods: Seventeen patients (14 males and 3 males) with carotid cavernous fistula (CCF) were retrospectively analyzed.

Results: Totally 18 cavernous sinus of 17 patients were occluded.