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ESTUDIOS


01 mayo 2013

NEUROSURGERY. The Management of Birth-Related Posterior Fossa Hematomas in Neonates

Blauwblomme, Thomas MD*,‡; Garnett, Matthew MD§; Vergnaud, Estelle MD‖; Boddaert, Nathalie MD¶; Bourgeois, Marie MD*,‡; DiRocco, Federico MD*,‡; Zerah, Michel MD*,‡; Sainte-Rose, Christian MD*,‡; Puget, Stéphanie MD, PhD*,‡

Background: Symptomatic posterior fossa hematoma in the term newborn is rare.

01 mayo 2014

SPRINGER. Selective intra-arterial administration of 18F-FDG to the rat brain — effects on hemispheric uptake

Fabian Arnberg, Erik Samén, Johan Lundberg, Li Lu, Jonas Grafström, Michael Söderman, Sharon Stone-Elander, Staffan Holmin

Introduction: The purpose of this study was to investigate the radioligand uptake and iodine contrast distribution in the intra- and extracranial circulation of the rat, after intra-arterial injections to the common carotid artery and different parts of the internal carotid artery.

08 mayo 2014

AMERICAN JOURNAL OF NEURORADIOLOGY. Cost-Effectiveness of CT Angiography and Perfusion Imaging for Delayed Cerebral Ischemia and Vasospasm in Aneurysmal Subarachnoid Hemorrhage

P.C. Sanelli, A. Pandya, A.Z. Segal, A. Gupta, S. Hurtado-Rua, J. Ivanidze, K. Kesavabhotla, D. Mir, A.I. Mushlin, and M.G.M. Hunink

Background and Purpose: Delayed cerebral ischemia and vasospasm are significant complications following SAH leading to cerebral infarction, functional disability, and death. In recent years, CTA and CTP have been used to increase the detection of delayed cerebral ischemia and vasospasm. Our aim was to perform comparative-effectiveness and cost-effectiveness analyses evaluating CTA and CTP for delayed cerebral ischemia and vasospasm in aneurysmal SAH from a health care payer perspective.

08 mayo 2014

AMERICAN JOURNAL OF NEURORADIOLOGY. Establishing a Rabbit Spinal Tumor Model for Nonvascular Interventional Therapy through CT-Guided Percutaneous Puncture Inoculation

L. Chen, J. Xiao, I.-C. Su, Y.-W. Wu, B. Zhang, K.-Y. Ge, Y.-C. Chang, C. Yang, and C.-F. Ni

Background and Purpose: An animal spinal tumor model is needed to better simulate the clinical situation and to allow percutaneous puncture, which may provide an experimental platform for the new nonvascular interventional therapies. We established a rabbit spinal tumor model through a CT-guided percutaneous puncture inoculation technique for nonvascular interventional therapy.

24 abril 2014

AMERICAN JOURNAL OF NEURORADIOLOGY. An In Vivo, MRI-Integrated Real-Time Model of Active Contrast Extravasation in Acute Intracerebral Hemorrhage

R.I. Aviv, T. Huynh, Y. Huang, D. Ramsay, P. Van Slyke, D. Dumont, P. Asmah, R. Alkins, R. Liu, and K. Hynynen

Background and Purpose: The “spot sign” or contrast extravasation is strongly associated with hematoma formation and growth. An animal model of contrast extravasation is important to test existing and novel therapeutic interventions to inform present and future clinical studies. The purpose of this study was to create an animal model of contrast extravasation in acute intracerebral hemorrhage.

24 abril 2014

AMERICAN JOURNAL OF NEURORADIOLOGY. Diffusion-Weighted Imaging with Dual-Echo Echo-Planar Imaging for Better Sensitivity to Acute Stroke

S.J. Holdsworth, K.W. Yeom, M.U. Antonucci, J.B. Andre, J. Rosenberg, M. Aksoy, M. Straka, N.J. Fischbein, R. Bammer, M.E. Moseley, G. Zaharchuk, and S. Skare

BACKGROUND AND PURPOSE: Parallel imaging facilitates the acquisition of echo-planar images with a reduced TE, enabling the incorporation of an additional image at a later TE. Here we investigated the use of a parallel imaging–enhanced dual-echo EPI sequence to improve lesion conspicuity in diffusion-weighted imaging.

01 abril 2013

AMERICAN JOURNAL OF ROENTGENOLOGY. Comparison of Enterprise With Neuroform Stent-Assisted Coiling of Intracranial Aneurysms

Yasha Kadkhodayan, Nicholas Rhodes, Spiros Blackburn, Colin P. Derdeyn, DeWitte T. Cross, III and Christopher J. Moran

OBJECTIVE. The Enterprise stent is the first closed-cell stent designed to treat wide-necked intracranial aneurysms. Advantages of the design can include improvement in keeping coils within an aneurysm and the ability of the stent to be recaptured. We compared the technical and clinical complications of the Enterprise stent with the open-cell Neuroform stent, its primary alternative.

14 noviembre 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Mind the Gap: Impact of Computational Fluid Dynamics Solution Strategy on Prediction of Intracranial Aneurysm Hemodynamics and Rupture Status Indicators

K. Valen-Sendstad and D.A. Steinman

Background and Purpose: Computational fluid dynamics has become a popular tool for studying intracranial aneurysm hemodynamics, demonstrating success for retrospectively discriminating rupture status; however, recent highly refined simulations suggest potential deficiencies in solution strategies normally used in the aneurysm computational fluid dynamics literature. The purpose of the present study was to determine the impact of this gap.

22 agosto 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. CT Angiography Findings in Carotid Blowout Syndrome and Its Role as a Predictor of 1-Year Survival

C.-W. Lee, C.-Y. Yang, Y.-F. Chen, A. Huang, Y.-H. Wang and H.-M. Liu

Background and Purpose: Carotid blowout is a serious late complication of prior treatment of advanced head and neck cancer. We evaluate the efficacy of CTA in the diagnosis of impending carotid blowout syndrome in patients with head and neck cancer, and its capability to predict clinical outcome.

01 marzo 2013

SPRINGER. Quantitative comparison of the dynamic flow waveform changes in 12 ruptured and 29 unruptured ICA–ophthalmic artery aneurysms

Aichi Chien, James Sayre, Fernando Viñuela

Introduction: Studies have reported a correlation between blood flow dynamics in the cardiac cycle and vascular diseases, but research to analyze the dynamic changes of flow in cerebral aneurysms is limited. This quantitative study investigates the temporal changes in flow during a cardiac cycle (flow waveform) in different regions of aneurysms and their association with aneurysm rupture.

01 marzo 2014

NEUROSURGERY. Arterial Blood Pressure Management During Carotid Endarterectomy and Early Cognitive Dysfunction

Heyer, Eric J. MD, PhD*,‡; Mergeche, Joanna L. BA*; Anastasian, Zirka H. MD*; Kim, Minjae MD*; Mallon, Kaitlin A. BA*; Connolly, E. Sander MD‡,§

Background: A common practice during cross-clamp of carotid endarterectomy (CEA) is to manage mean arterial pressure (MAP) above baseline to optimize the collateral cerebral blood flow and reduce the risk of ischemic stroke.

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