Delivery Assist Catheters : A new Device Class and Initial Experience in Mechanical Thrombectomy in Acute Ischemic Stroke Patients.

Purpose: To report in vivo experience of a delivery assist catheter as ascending aid for a large-bore catheter for intracranial thromboaspiration.

Methods: Retrospective data collection and analysis of stroke databases of two comprehensive stroke centers focusing on technical and angiographic parameters - primary endpoint defined as reaching the occlusion with a large-bore reperfusion catheter - from patients receiving endovascular stroke treatment using an AXS Offset™ delivery assist catheter (Stryker, Fremont, CA, USA) between May 2017 and November 2017.

Results: Using the delivery assist catheter, a 6F catheter could be advanced to an intracranial occlusion for direct thromboaspiration in 30 (88.

Multimodal imaging findings during severe attacks of familial hemiplegic migraine type 2.

Background: Familial hemiplegic migraine (FHM) is a rare monogenic form of migraine with aura with three distinct genetic subtypes (FHM1-3). Imaging studies during acute FHM attacks are scarce in the literature. This is particularly true for the FHM2 subtype.

Cerebral vein thrombosis: clinical manifestation and diagnosis.

Background: Cerebral venous thrombosis (CVT) is a disease with a wide spectrum of symptoms and severity. In this study we analysed the predictive value of clinical signs and symptoms and the contribution of D-dimer measurements for diagnosis.

Methods: We evaluated consecutive patients admitted with suspected CVT receiving non-invasive imaging.

Preoperative embolization of intracranial arteriovenous malformations with Onyx.

Objective: Preoperative embolization in accordance with multimodal therapies for cerebral arteriovenous malformations (AVMs) is generally the first step in treatment and may result in complete obliteration. The Onyx liquid embolic system (Micro Therapeutics, Inc., Irvine, CA) may offer advantages for intranidal targeted embolization and microsurgical resection.

Treatment and follow-up of 22 unruptured wide-necked intracranial aneurysms of the internal carotid artery with Onyx HD 500.

Background And Purpose: The purpose of this study was to demonstrate endovascular treatment of wide-necked aneurysms of the internal carotid artery with the liquid embolic agent Onyx HD 500.

Methods: Twenty-two wide-necked, large or giant aneurysms of the internal carotid artery (ICA) were treated in 22 patients with Onyx HD 500 (15 ophthalmic, 1 clinoid, and 6 cavernous aneurysms). Sixteen patients were asymptomatic, and mass effect of the aneuryms caused cranial nerve palsy in 6.

Dynamic spin labeling angiography in extracranial carotid artery stenosis.

Background And Purpose: Similar to digital subtraction angiography, dynamic spin labeling angiography (DSLA) provides time-resolved measurements of the influx of blood into the cerebral vascular tree. We determined whether DSLA may help in assessing the degree of stenosis and whether it provides information about intracerebral collateralization and allows us to monitor the hemodynamic effects of vascular interventions.

Methods: We developed a segmented DSLA sequence that allowed the formation of images representing inflow delays in 41-ms increments.

Influence of recanalization on outcome in dural sinus thrombosis: a prospective study.

Background And Purpose: Recanalization in dural sinus thrombosis (DST) has been observed previously; however, systematic prospective data are lacking. The influence of recanalization on DST outcome has not yet been thoroughly evaluated.

Methods: Thirty-seven consecutive patients with DST were prospectively examined.

Effect of glacial acetic acid and ethiodized oil concentration on embolization with N-butyl 2-cyanoacrylate: an in vivo investigation.

Background And Purpose: Precise control of the polymerization dynamics of cyanoacrylate mixtures used in the embolization of cerebral arteriovenous malformations is required to achieve a safe and permanent obliteration of the lesion. In this study, in vivo embolization using mixtures of Histoacryl, Lipiodol Ultra-Fluid, and glacial acetic acid (GAA) was investigated. The present study investigated whether increased ethiodized oil concentration or the addition of GAA increased rate of embolization.