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S Fischer, A Weber, A Carolus, F Drescher, F Götz, W Weber
BACKGROUND: Endovascular treatment of wide-necked aneurysms remains challenging without the use of adjunctive devices to preserve the parent artery. OBJECTIVE: To present our initial experience with a temporary bridging device, the Comaneci (Rapid Medical, Israel). The compliant remodeling mesh protects the parent artery during coil occlusion without flow arrest in the distal vasculature. Permanent dual antiplatelet therapy is not required since the device is fully removed at the end of the procedure...
October 14, 2016: Journal of Neurointerventional Surgery
W Tania Rahman, Julius Griauzde, Neeraj Chaudhary, Aditya S Pandey, Joseph J Gemmete, Suzanne T Chong
Neurovascular emergencies, consisting of acute ischemic stroke, non-traumatic aneurysmal subarachnoid hemorrhage, arteriovenous malformation, dural arteriovenous fistula, and carotid- cavernous fistula, can have an acute presentation to the emergency department. Radiologists should have an understanding of these processes and their imaging findings in order to provide a prompt and accurate diagnosis. Neurointerventional radiology plays a critical role in providing additional diagnostic information and potentially curative treatment...
October 7, 2016: Emergency Radiology
G Lee Pride, Justin F Fraser, Rishi Gupta, Mark J Alberts, J Neal Rutledge, Ray Fowler, Sameer A Ansari, Todd Abruzzo, Barb Albani, Adam Arthur, Blaise Baxter, Ketan R Bulsara, Michael Chen, Josser E Delgado Almandoz, Chirag D Gandhi, Don Heck, Steven W Hetts, Joshua A Hirsch, M Shazam Hussain, Richard Klucznik, Seon-Kyu Lee, William J Mack, Thabele Leslie-Mazwi, Ryan A McTaggart, Philip M Meyers, J Mocco, Charles Prestigiacomo, Athos Patsalides, Peter Rasmussen, Robert M Starke, Peter Sunenshine, Donald Frei, Mahesh V Jayaraman
No abstract text is available yet for this article.
October 5, 2016: Journal of Neurointerventional Surgery
Sumedh S Shah, Giancarlo Perez, Brian M Snelling, Diogo C Haussen, Samir Sur, Ishna Sharma, Dileep R Yavagal, Mohamed Samy Elhammady, Eric C Peterson
BACKGROUND: Angioseal, an arteriotomy closure device (ACD), functions as a collagen plug that physically closes arteriotomy sites and can simultaneously induce platelet activation and aggregation. When used 'on-label', the safety and efficacy profile of Angioseal is superior compared with those of other ACDs. However, Angioseal is sometimes deployed in less than ideal situations. Therefore, we sought to assess the safety and efficacy of 'off-label' Angioseal use in patients undergoing femoral arteriotomies...
September 27, 2016: Journal of Neurointerventional Surgery
Raghav Gupta, Justin M Moore, Christoph J Griessenauer, Nimer Adeeb, Apar S Patel, Roy Youn, Karen Poliskey, Ajith J Thomas, Christopher S Ogilvy
INTRODUCTION: Flow diversion with the Pipeline Embolization Device (PED) is currently adopted for treatment of a variety of intracranial aneurysms. The elevated risk of thromboembolic complications associated with the device necessitates the need for administration of antiplatelet agents. We sought to assess current dual antiplatelet therapy practices patterns and their associated costs, following PED placement. MATERIALS AND METHODS: An online questionnaire assessing dual antiplatelet regimens following flow diversion for treatment of intracranial aneurysms was developed and disseminated to 80 neurosurgeons at major academic cerebrovascular centers...
September 15, 2016: World Neurosurgery
Dong-Kyu Jang, David A Stidd, Sebastian Schafer, Michael Chen, Roham Moftakhar, Demetrius K Lopes
PURPOSE: We investigated whether a 3D overlay roadmap using monoplane fluoroscopy offers advantages over a conventional 2D roadmap using biplane fluoroscopy during endovascular aneurysm treatment. MATERIALS AND METHODS: A retrospective chart review was conducted for 131 consecutive cerebral aneurysm embolizations by three neurointerventionalists at a single institution. Allowing for a transition period, the periods from January 2012 to August 2012 (Time Period 1) and February 2013 to July 2013 (Time Period 2) were analyzed for radiation exposure, contrast administration, fluoroscopy time, procedure time, angiographic results, and perioperative complications...
September 2016: Neurointervention
Mohammed Hussain, Mohammad Moussavi, Daniel Korya, Siddhart Mehta, Jaskiran Brar, Harina Chahal, Ihtesham Qureshi, Tapan Mehta, Javaad Ahmad, Osama O Zaidat, Jawad F Kirmani
BACKGROUND: Recent advances in the treatment of ischemic stroke have focused on revascularization and led to better clinical and functional outcomes. A systematic review and pooled analyses of 6 recent multicentered prospective randomized controlled trials (MPRCT) were performed to compare intravenous tissue plasminogen activator (IV tPA) and endovascular therapy (intervention) with IV tPA alone (control) for anterior circulation ischemic stroke (AIS) secondary to large vessel occlusion (LVO)...
June 2016: Interventional Neurology
Kunal Agrawal, Rema Raman, Karin Ernstrom, Robert Joseph Claycomb, Dawn Matherne Meyer, Thomas Martin Hemmen, Royya Fatima Modir, Pranav Kachhi, Brett Cowan Meyer
OBJECTIVES: The objective of the study is to assess the accuracy of final diagnosis in telestroke-guided tissue plasminogen activator (rt-PA) patients compared with bedside evaluation using computed tomography (CT) or magnetic resonance imaging (MRI) as a surrogate for final stroke diagnosis. The overall goal was to determine if telestroke had similar diagnostic accuracy as bedside evaluations in diagnosing rt-PA-treated patients. MATERIALS AND METHODS: We analyzed all acute stroke code calls who received intravenous rt-PA at our center from October 2013 to June 2015...
September 2, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
Karen Chen, Srinivasan Paramasivam, Alejandro Berenstein
BACKGROUND: Intracranial vascular malformations in children are being addressed through a variety of treatment modalities including open surgery, external beam radiation, and image-guided neuroendovascular procedures. These patients often receive multiple treatments and incur serial exposures to ionizing radiation which has been linked to tumor development in population-based data. OBJECTIVE: This study quantifies the effect of collimation on exposures from single procedures and over patient lifetimes to estimate excess risk of lifetime tumor development...
September 5, 2016: Journal of Neurointerventional Surgery
V K Rana, S Rudin, D R Bednarek
PURPOSE: Neurovascular interventional procedures using biplane fluoroscopic imaging systems can lead to increased risk of radiation-induced skin injuries. The authors developed a biplane dose tracking system (Biplane-DTS) to calculate the cumulative skin dose distribution from the frontal and lateral x-ray tubes and display it in real-time as a color-coded map on a 3D graphic of the patient for immediate feedback to the physician. The agreement of the calculated values with the dose measured on phantoms was evaluated...
September 2016: Medical Physics
Steven W Hetts, Parham Moftakhar, Neil Maluste, Heather J Fullerton, Daniel L Cooke, Matthew R Amans, Christopher F Dowd, Randall T Higashida, Van V Halbach
OBJECTIVE Intracranial dural arteriovenous fistulas (DAVFs) are rare in children. This study sought to better characterize DAVF presentation, angioarchitecture, and treatment outcomes. METHODS Children with intracranial DAVFs between 1986 and 2013 were retrospectively identified from the neurointerventional database at the authors' institution. Demographics, clinical presentation, lesion angioarchitecture, treatment approaches, angiographic outcomes, and clinical outcomes were assessed. RESULTS DAVFs constituted 5...
August 19, 2016: Journal of Neurosurgery. Pediatrics
Ljubisa Borota, Lars Jangland, Per-Erik Åslund, Elisabeth Ronne-Engström, Christoffer Nyberg, Ehab Mahmoud, Takuya Sakaguchi, Andreas Patz
BACKGROUND: Increased interest in radiation dose reduction in neurointerventional procedures has led to the development of a method called "spot fluoroscopy" (SF), which enables the operator to collimate a rectangular or square region of interest anywhere within the general field of view. This has potential advantages over conventional collimation, which is limited to symmetric collimation centered over the field of view. PURPOSE: To evaluate the effect of SF on the radiation dose...
August 13, 2016: Acta Radiologica
Ryan A Grant, Branden J Cord, Lovemore Kuzomunhu, Kevin Sheth, Emily Gilmore, Charles C Matouk
Excessive consumption of over-the-counter stimulants is associated with coronary vasospasm, thrombotic complications, and sudden cardiac death. Their effects on cerebrovascular physiology are not yet described in the neurointerventional literature. Patients are increasingly exposed to high levels of these vasoactive substances in the form of caffeinated energy drinks and specialty coffees. We report a case of aneurysmal subarachnoid hemorrhage (SAH) and severe, catheter-induced vasospasm during attempted endovascular repair of a ruptured anterior communicating artery (AComA) aneurysm in the setting of excessive energy drink consumption...
August 1, 2016: Interventional Neuroradiology
Francesco Briganti, Giuseppe Leone, Lorenzo Ugga, Mariano Marseglia, Antonio Macera, Andrea Manto, Luigi Delehaye, Maurizio Resta, Mariachiara Resta, Nicola Burdi, Nunzio Paolo Nuzzi, Ignazio Divenuto, Ferdinando Caranci, Mario Muto, Domenico Solari, Paolo Cappabianca, Francesco Maiuri
BACKGROUND: Experience with the endovascular treatment of cerebral aneurysms using the p64 Flow Modulation Device is still limited. This study discusses the results and complications of this new flow diverter device. METHODS: 40 patients (30 women, 10 men) with 50 cerebral aneurysms treated in six Italian neurointerventional centers with the p64 Flow Modulation Device between April 2013 and September 2015 were retrospectively reviewed. RESULTS: Complete occlusion was obtained in 44/50 aneurysms (88%) and partial occlusion in 3 (6%)...
July 20, 2016: Journal of Neurointerventional Surgery
Pervinder Bhogal, Yince Loh, Patrick Brouwer, Tommy Andersson, Michael Söderman
OBJECTIVE: To report our preliminary experience with the use of stent retrievers to cause vasodilation in patients with delayed cerebral vasospasm secondary to subarachnoid hemorrhage. METHODS: Four patients from two different high volume neurointerventional centers developed cerebral vasospasm following subarachnoid hemorrhage. In addition to standard techniques for the treatment of cerebral vasospasm, we used commercially available stent retrievers (Solitaire and Capture stent retrievers) to treat the vasospastic segment including M2, M1, A2, and A1...
July 14, 2016: Journal of Neurointerventional Surgery
Ryan A McTaggart, Shadi Yaghi, Grayson Baird, Richard A Haas, Mahesh V Jayaraman
BACKGROUND: Embolectomy is the standard of care for emergent large vessel occlusion (ELVO), and needs to be done as quickly as possible for the best possible outcomes. Optimization of workflow and process is certainly paramount. One aspect of this is process improvement to standardize as much as possible the procedure in order to decrease variability among operators, which breeds familiarity for the entire team. OBJECTIVE: To evaluate the impact of a standardized approach to ELVO cases in decreasing times from groin puncture to first deployment of a stent-retriever and final recanalization...
July 8, 2016: Journal of Neurointerventional Surgery
Samir Sur, Brian Michael Snelling, Dileep Yavagal, Eric C Peterson
INTRODUCTION: Widely adopted by interventional cardiology, radial access has seen slower adoption in neurointerventional procedures despite its proven increased safety and patient satisfaction. Based on our positive initial experience with radial access, as well as increased patient satisfaction, we adopted a "radial first" policy for diagnostic angiography. We present our initial experience transitioning from the traditional transfemoral approach to a radial-first approach. METHODS: Procedural data were reviewed from 103 consecutive transradial diagnostic cerebral angiograms performed between November 2015 and February 2016...
August 2016: Neurosurgery
J Diego Lozano, Francesco Massari, Mary C Howk, Katyucia de Macedo Rodrigues, Christopher Brooks, Mary Perras, David E Rex, Ajay K Wakhloo, Anna Luisa Kühn, Ajit S Puri
The endovascular management of acute ischemic stroke (AIS) due to emergency large vessel occlusion (ELVO) has become the standard of care after the recent publication of landmark randomized, controlled trials. Mechanical thrombectomy, in addition to intravenous thrombolysis (within 4.5 hours when eligible), is now part of the algorithm of the standard of care when treating AIS in patients with ELVO in the anterior circulation up to six hours after symptom onset. A newly introduced device, the Arc™ intracranial support catheter (Medtronic, Irvine, USA), is specifically designed for the introduction of neurointerventional devices into the cerebral vasculature and facilitates the delivery of microcatheters into smaller, more distal intracranial vessels...
2016: Curēus
Guilherme Dabus, Jonathan A Grossberg, C Michael Cawley, Jacques E Dion, Ajit S Puri, Ajay K Wakhloo, Douglas Gonsales, Pedro Aguilar-Salinas, Eric Sauvageau, Italo Linfante, Ricardo A Hanel
BACKGROUND: The off-label use of flow diverters in the treatment of distal aneurysms continues to be debated. OBJECTIVE: To report our multicenter experience in the treatment of complex anterior cerebral artery aneurysms with the Pipeline embolization device (PED). METHODS: The neurointerventional databases of the four participating institutions were retrospectively reviewed for aneurysms treated with PED between October 2011 and January of 2016...
July 5, 2016: Journal of Neurointerventional Surgery
Debarpan Guhathakurta, Anirban Dutta
Transcranial direct current stimulation (tDCS) modulates cortical neural activity and hemodynamics. Electrophysiological methods (electroencephalography-EEG) measure neural activity while optical methods (near-infrared spectroscopy-NIRS) measure hemodynamics coupled through neurovascular coupling (NVC). Assessment of NVC requires development of NIRS-EEG joint-imaging sensor montages that are sensitive to the tDCS affected brain areas. In this methods paper, we present a software pipeline incorporating freely available software tools that can be used to target vascular territories with tDCS and develop a NIRS-EEG probe for joint imaging of tDCS-evoked responses...
2016: Frontiers in Neuroscience
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