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Section Editors: Christoph Griessenauer, Ning Lin, Justin Singer and Clemens M. Schirmer

Higher risk of symptomatic ICH after thrombectomy for acute ischemic stroke in Asian population

A recently published study from a large stroke database in China found that risk of symptomatic ICH in Asian population was higher than previous RCTs, which predominantly enrolled Caucasians.  The investigators utilized data from Endovascular Treatment for Acute Anterior Circulation Ischemic Stroke Registry (ACTUAL), a multicenter registry program in China, to study the predictors for symptomatic ICH.   More »

Patency of anterior circulation branch vessels after Pipeline embolization: longer-term results from 82 aneurysm cases

Use of the Pipeline Embolization Device (PED) for treatment of intracranial aneurysm is increasing.  Due to the lower porosity and the flow diverting properties of the device, branch vessel patency is frequently a concern.  This retrospective study assessed the rate of intracranial internal carotid artery, anterior circulation branch vessel patency of 127 arterial branches covered by PED which demonstrated a longer-term branch occlusion rate of 15.8%.  All branch occlusions were asymptomatic and there were no instances of anterior choroidal occlusion. More »

Distance from lesion-to-eloquence in brain arteriovenous malformation resection

Eloquence is one of the most critical features surrounding the natural history and management of brain arteriovenous malformations (AVMs). In a  study published ahead-of-print this week in the Journal of Neurosurgery, 201 consecutive patients with brain AVMs that underwent preoperative functional MRI and diffusion-tensor imaging followed by ... More »

Vessel Wall Enhancement and Blood–Cerebrospinal Fluid Barrier Disruption After Mechanical Thrombectomy

In this recently published study, the investigators performed gadolinium-enhanced MRI to identify the rate of vessel wall permeability impairment and blood-CSF barrier (BCSFB) disruption. More »

Analysis of saccular aneurysms in the Barrow Ruptured Aneurysm Trial

Published ahead of print last week online in the Journal of Neurosurgery the Barrow Ruptured Aneurysm Trial (BRAT) published their subgroup analysis of only the saccular aneurysms included in the study.  The BRAT6 year results have previously been published however this subgroup analysis included review of only ... More »

The natural history of untreated, ruptured cerebral aneurysms

Data on ruptured cerebral aneurysms left unsecured are from the 1960s. This month in the journal Stroke, a group of researchers from Helsinki in Finland published their findings in a more recent cohort. The authors identified 510 patients ... More »

Coronary artery disease and diabetes associated with higher annual growth rate of brain aneurysms

In  this study  recently presented at the International Stroke Conference, investigators followed a large cohort of patients with known intracranial aneurysms and analyzed demographic and clinical factors that are associated with aneurysm growth.     Not surprisingly, the study found that mean initial size ... More »

Anesthesia Technique and Outcomes of Mechanical Thrombectomy in Patients With Acute Stroke

In this month’s Stroke journal a cohort study of acute ischemic stroke patients was published to evaluate the impact of anesthesia technique on case fatality and length of stay.  The study identifies an association of general anesthesia with increase case fatality (6.4%) and length of stay (8.4 days) More »

Woven EndoBridge (WEB) technique for cerebral aneurysms

The Woven EndoBridge (WEB) technique represents an intrasaccular device designed to obliterate cerebral aneurysms and was first introduced approximately 4 years ago. Currently there are 3 versions including a double and single layer cube and a single ... More »

Winter 2017 CV Section Newsletter now available

CV Section News Now Available Dear AANS/CNS Cerebrovascular Section Members: The new issue of CV Section News is now available at CV Section Winter 2017 newsletter. The Winter edition features the Chairman's Message, presented by Kevin M. Cockroft, M.D., M.Sc. Other highlights include: ... More »

Intraventricular Nimodipine Reduces Delayed Cerebral Ischemia after aSAH

This study is a randomized, phase 1/2a, dose-escalation trial to investigate the safety and efficacy of intraventricular sustained-release nimodipine (EG-1962) in aneurysmal subarachnoid hemorrhage. The authors showed that EG-1962 is safe at 800 mg and is associated with reduced delayed cerebral ischemia and better outcome than conventional ... More »

Stereotactic radiosurgery for cerebral arteriovenous malformation: evaluation of long-term outcomes in a multicenter cohort

In this month’s Journal of Neurosurgery, a multicenter cohort study was published.  The cohort consists of 2236 patients with arteriovenous malformations (AVM) treated with stereotactic radiosurgery (SRS) and represents the largest reported series of AVM treated with SRS.  Mean patient age was 36 years and 49.6% were female.  ... More »

Calcification of the intracranial internal carotid artery affects recanalization and functional outcome after thrombectomy

In 2015, 5 large randomized clinical trials demonstrated that mechanical thrombectomy substantially improves functional outcome of patients presenting with acute ischemic stroke. The positive results of the trials were largely attributed to screening for large vessel occlusion and high recanalization ... More »

New Territory Infarction after Treatment Administration in ESCAPE trial

This study  a nalyzed infarction in a new, previously unaffected territory after acute stroke treatment in a large randomized, controlled trial and re-affirmed that endovascular thrombectomy procedure is safe and elucidated that new territory infarcts are likely "epiphenomena" of the ischemic stroke process rather than a complication ... More »

CV Section member in the news

Col. Rafael Rodriguez–Mercado,  member of the CV section,  professor of Neurosurgery at the University of Puerto Rico (UPR), School of Medicine and Director of the Endovascular Neurosurgeon and Stroke Center and  Command Surgeon for the 1st Mission Support Command (MSC), was  nominated  as ... More »

Aneurysm growth and de novo aneurysms during aneurysm surveillance

This study investigates the rate of aneurysm growth of UIAs and de novo aneurysm formation during aneurysm surveillance.   The study includes surveillance of 234 aneurysms in 192 patients.  Over the 793 years of aneurysm follow up the annual UIA growth was approximately 3.5% and the risk of de novo ... More »

Publication of the Flow Diversion in the Treatment of Intracranial Aneurysm Trial (FIAT): a randomized care trial and registry

This month the results of the Flow Diversion in the Treatment of Intracranial Aneurysm Trial (FIAT) were published ahead-of-print in the Journal of Neurosurgery. From 2011 to 2015, 78 patients were randomized between flow diversion and standard management, and 34 patients received flow diversion within a registry at 3 ... More »

Research collaboration and study recruitment

The AANS/CNS Joint Cerebrovascular Section is excited to announce that members can now take advantage of the section's electronic resources to recruit sites and co-investigators for studies or surveys.  Members with studies sponsored by institutions, government, or foundations are invited to submit a call for collaborators through the ... More »

Registration and join us for the AANS/CNS Joint Cerebrovascular Annual Meeting in Los Angeles

Registration and hotel booking is now open for the AANS/CNS Joint Cerebrovascular Annual Meeting in Los Angeles, held again in conjunction with the SNIS, February 15-16, 2016.  We anticipate an outstanding meeting.  Come hear Jean Raymond deliver the Luessenhop lecturer, and attend sessions such as 'the high-risk patient', ... More »

CAST certification pathway has been finalized

Please review the attached press release that was provided by the Neuroendovascular Surgery Advisory Committee (NESAC).  This document announces the initial step in centralized certification of training in the specialty of NeuroEndovascular Surgery as agreed upon by the specialties of Neurosurgery, Radiology and Neurology.    CAST NES Press Release 9.1.15.pdf   More »

September is Brain Aneurysm month

  September is Brain Aneurysm Month! Now for almost a decade and originally established by the Brain Aneurysm Foundation the CV section helps to provide awareness, education, research to address to improve the lives of our patients suffering from brain aneurysms   Consider going to ... More »

New Summer 2015 issue of CV Section News is now available

CV Section News Now Available Dear AANS/CNS Cerebrovascular Section Members: The new Summer 2015 issue of CV Section News is now available at  or directly at  CV Section Summer 2015 newsletter.pdf .    Read the Chair's report, ... More »

Strong evidence for the efficacy of mechanical thrombectomy for acute stroke revealed at the International

Three randomized controlled trials, ESCAPE, EXTEND-IA, and SWIFT PRIME, presented today at the International Stroke Conference in Nashville, TN demonstrate that for acute ischemic stroke caused by large vessel occlusions, mechanical thrombectomy plus IV thrombolysis improves functional outcomes compared with IV-tPA alone. ESCAPE and ... More »

New CV Section Newsletter available!

CV Section News Now Available Dear AANS/CNS Cerebrovascular Section Members:   The new issue of  CV Section News  is now available at  CV Section Winter 2015 newsletter   The Winter edition features the Chairman's Message, presented by Brian Hoh MD, FAANS, FACS, FAHA ... More »

Registration for annual meeting 2015 is open now!

The registration for the  2015 Annual Meeting of the  AANS/CNS Cerebrovascular Section  held in partnership with the Society for Neurointerventional Surgeons (SNIS)  in  Nashville, Tennessee on February 9-10, 2015 is open now - please visit the meeting page for  details .    More »

Cerebrovascular article of the month Flow-Diverting Stents for Intracranial Bifurcation Aneurysm Treatment

Treatment of cerebral aneurysm located at vascular bifurcations with flow diverting devices has been linked with questions about the fate of the covered branch and the risk of symptomatic thromboembolic devices. A new article in NEUROSURGERY offers some data .  Dr. Saleme and colleagues  ... More »

MR CLEAN trial published - a positive randomized trial of intraarterial treatment for acute ischemic stroke

Today the New England Journal of Medicine published online first the results of the MR CLEAN trial from the Netherlands. Results.  500 patients were enrolled in the Netherlands (233 assigned to intraarterial treatment and 267 to usual care alone). The authors found an absolute ... More »

CV sections now welcomes medical students!

The CV section is pleased to announce that medical students interested in the issues of cerebrovascular and endovascular neurosurgery are now welcome to join the section.  Medical student membership in the section may be granted to medical students who are already either Student ... More »

Summer 2014 CV Section Newsletter Now Available

CV Section News Now Available Dear AANS/CNS Cerebrovascular Section Members: The new issue of CV Section News is now available at files/newsletter/CV%20Section% 20Summer%202014%20newsletter. pdf The Summer edition features the Chairman's Message, presented by Brian Hoh ... More »

Call to action to support initiatives to designate September 2014 "National Brain Aneurysm Awareness Month"

Call for action by all members to support the initiatives by US representatives Pat Tiberi (R-OH) and Richard Neal (D-MA) have introduced a resolution ( H. Res. 522 ) that would designate September 2014 as “National Brain Aneurysm Awareness Month.”  A similar resolution ( ... More »

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