Randall T. Higashida

E-070 Trends in pediatric neurointerventional radiology: A survey of a 23-year experience in infants less than one year of age

Anthony J. Baker, Michael Travis Caton, Kazim H Narsinh, Daniel L. Cooke et autres

Background and Purpose Pediatric neurointerventional radiology is an evolving subspecialty with growing indications and technological advancement such as miniaturization of devices. The ability to perform these procedures is continuously balanced with necessity given the inherently higher risks of radiation1,2 and cerebrovascular injury …

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O-035 Ignore the Core: Does Recent Administration of Intravenous Iodinated Contrast Render Core Infarct Estimation Inaccurate Utilizing the Automated CT Perfusion RAPID Software?

Alexander Z. Copelan, Gerald Drocton, Eric R. Smith, Rajkamal S. Khangura et autres

Background and Purpose Automated computed tomography perfusion (CTP) software is increasingly utilized to aid in treatment decisions in emergent large vessel occlusion (ELVO), particularly in extended window stroke patients. Neurointerventionalists must be cognizant of pitfalls of these software packages in predicting ischemic …

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Enlarged Condylar Veins as a Source of Pulsatile Tinnitus: Angiographic Features and Confirmation with Venous Balloon Test Occlusion

Matthew David Alexander, Karl M. Meisel, Van V. Halbach, Agnes Lau et autres

P-025 Calcium Channel Blocker Infusion Improves Vessel Measurement Accuracy and Aneurysm Occlusion Following Flow Diversion

Michael J. Alexander, Robert J. Darflinger, Fabio Settecase, Andrew Nicholson et autres

Introduction/purpose To best achieve complete occlusion of aneurysms treated with flow diverters (FDs), devices must be accurately sized to precisely match the parent vessel diameter. Appropriately sized FDs will have maximal coverage over the aneurysm neck and will be more likely to …

P-024 Prominent Condylar Veins Causing Pulsatile Tinnitus: Dynamic Angiographic Confirmation

Michael J. Alexander, Karl M. Meisel, Van V Halbach, Robert J. Darflinger et autres

Introduction/purpose Numerous processes can cause pulsatile tinnitus (PT), some of which are potentially life threatening. This case series describes a cause of PT – prominent condylar veins – that has undergone little investigation to date. This report characterizes angiographic findings in patients …

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E-092 azygous anterior cerebral artery aneurysms

Andrew Nicholson, Daniel L. Cooke, Matthew Robert Amans, Fabio Settecase et autres

Introduction/purpose The intracranial arterial vasculature is known to have an abundance of variability, especially in and around the Circle of Willis. A functional absence of the anterior communicating artery (ACom), an artery that connects the paired A1 segment anterior cerebral arteries (ACAs), …

E-091 atraumatic epidural arteriovenous fistulae of the spine with intradural drainage: case series and review of imaging and treatment methods

Andrew Nicholson, Matthew Robert Amans, Fabio Settecase, Steven W. Hetts et autres

Introduction/purpose Spinal epidural arteriovenous fistulas (SEDAVF) with intradural venous drainage are a rare and poorly understood vascular malady of the spine – one that is both potentially neurologically devastating as well as potentially curable. Several theories have been postulated as to their …

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Association between Venous Angioarchitectural Features of Sporadic Brain Arteriovenous Malformations and Intracranial Hemorrhage

Matthew David Alexander, Daniel L. Cooke, Jeffrey A. Nelson, Dekai Guo et autres

BACKGROUND AND PURPOSE: Intracranial hemorrhage is the most serious outcome for brain arteriovenous malformations. This study examines associations between venous characteristics of these lesions and intracranial hemorrhage. MATERIALS AND METHODS: Statistical analysis was performed on a prospectively maintained data base of brain …

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Influence of Patient Age on Angioarchitecture of Brain Arteriovenous Malformations

Steven W. Hetts, Daniel L. Cooke, Jeffrey A. Nelson, Nalin M. Gupta et autres

BACKGROUND AND PURPOSE: The imaging characteristics and modes of presentation of brain AVMs may vary with patient age. Our aim was to determine whether clinical and angioarchitectural features of brain AVMs differ between children and adults. MATERIALS AND METHODS: A prospectively collected …

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O-023 Pediatric versus adult AVM angioarchitecture: are children really just small adults?

Steven W. Hetts, H Kim, Daniel L. Cooke, Joey English et autres

Background and Purpose Children with brain AVMs are more likely than adults to present with hemorrhage. Prior studies have also demonstrated that AVMs in children are more frequently located deep within the brain than in adults. We sought to determine in greater …

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E-056 Endovascular treatment of medically refractory cerebral vasospasm following aneurysmal subarachnoid hemorrhage

Steven W. Hetts, Pu Jun, Nerrissa Ko, Joey English et autres

Background and purpose Cerebral vasospasm (CV) following aneurysmal subarachnoid hemorrhage (SAH) is a significant cause of morbidity and mortality. We review our experiences using percutaneous transluminal angioplasty (PTA) and intra-arterial (IA) verapamil infusion for treating medically refractory cases. Materials and methods Retrospective …

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Endovascular and surgical treatmentfor dural arteriovenous fistulaeof the superior petrosal sinus

Van V Halbach, Peter A. Balousek, Louis P. Caragine, Chris F. Dowd et autres