13 septiembre 2012

STROKE. Detailed Analysis of Periprocedural Strokes in Patients Undergoing Intracranial Stenting in Stenting and Aggressive Medical Management for Preventing Recurrent Stroke in Intracranial Stenosis (SAMMPRIS)

David Fiorella, MD, PhD; Colin P. Derdeyn, MD; Michael J. Lynn, MS; Stanley L. Barnwell, MD, PhD; Brian L. Hoh, MD; Elad I. Levy, MD; Mark R. Harrigan, MD; Richard P. Klucznik, MD; Cameron G. McDougall, MD; G. Lee Pride Jr, MD; Osama O. Zaidat, MD, MS; Helmi L. Lutsep, MD; Michael F. Waters, MD, PhD; J. Maurice Hourihane, MD; Andrei V. Alexandrov, MD; David Chiu, MD; Joni M. Clark, MD; Mark D. Johnson, MD; Michel T. Torbey, MD, MPH; Zoran Rumboldt, MD; Harry J. Cloft, MD, PhD; Tanya N. Turan, MD; Bethany F. Lane, RN; L. Scott Janis, PhD; Marc I. Chimowitz, MB, ChB for the SAMMPRIS Trial Investigators

Background and Purpose—Enrollment in the Stenting and Aggressive Medical Management for Preventing Recurrent stroke in Intracranial Stenosis (SAMMPRIS) trial was halted due to the high risk of stroke or death within 30 days of enrollment in the percutaneous transluminal angioplasty and stenting arm relative to the medical arm. This analysis focuses on the patient and procedural factors that may have been associated with periprocedural cerebrovascular events in the trial. Stroke. 2012; 43: 2682-2688 Published online before print September 13, 2012, doi: 10.1161/​STROKEAHA.112.661173. Copyright © 2012 American Heart Association, Inc.

11 septiembre 2012

STROKE. National Trends in Utilization and Outcomes of Endovascular Treatment of Acute Ischemic Stroke Patients in the Mechanical Thrombectomy Era

Ameer E. Hassan, DO, Saqib A. Chaudhry, MD, Mikayel Grigoryan, MD, Wondwossen G. Tekle, MD and Adnan I. Qureshi, MD

Background and Purpose: Because several new devices for mechanical thrombectomy have become available, the outcomes of patients undergoing endovascular treatment for acute ischemic stroke are expected to improve in the United States. We performed this analysis to evaluate trends in utilization of endovascular treatment and associated rates of death and disability among acute ischemic stroke patients over a 6-year period, including further assessment within age strata. STROKEAHA.112.658781 Published online before print September 11, 2012, doi: 10.1161/​STROKEAHA.112.658781 Copyright © 2012 American Heart Association, Inc.

26 julio 2012

STROKE. Cerecyte Coil Trial. Angiographic Outcomes of a Prospective Randomized Trial Comparing Endovascular Coiling of Cerebral Aneurysms With Either Cerecyte or Bare Platinum Coils

Andrew J. Molyneux, FRCR; Alison Clarke, BA; Mary Sneade, BA; Ziyah Mehta, DPhil; Stuart Coley, FRCR; Daniel Roy, MD; David F. Kallmes, MD; Allan J. Fox, MD

Background and Purpose—We report the primary outcome of the Cerecyte Coil Trial, a randomized trial to determine whether polymer-loaded Cerecyte coils compared with Micrus bare platinum coils improved the proportion of patients with angiographic occlusion of the aneurysm at 6 months when assessed by a core laboratory. The secondary objectives were to compare the clinical outcomes and retreatment rates in the 2 groups. Stroke. 2012; 43: 2544-2550 Published online before print July 26, 2012, doi: 10.1161/​STROKEAHA.112.657254. Copyright © 2012 American Heart Association, Inc.

18 septiembre 2012

STROKE. Time Is Brain(stem) in Basilar Artery Occlusion

Mervyn D.I. Vergouwen, MD, PhD, Ale Algra, MD, PhD, Thomas Pfefferkorn, MD, Christian Weimar, MD, Christina M. Rueckert, MD, Vincent Thijs, MD, L. Jaap Kappelle, MD, PhD and Wouter J. Schonewille, MD on behalf of the Basilar Artery International Cooperation Study (BASICS) Study Group

Background and Purpose—The frequent use of a longer time window for recanalization therapy in patients with basilar artery occlusion (BAO) in daily practice is not supported by any scientific evidence. We investigated the relationship between time to recanalization therapy and functional outcome in BAO with data from the Basilar Artery International Cooperation Study (BASICS). STROKEAHA.112.666867 Published online before print September 18, 2012, doi: 10.1161/​STROKEAHA.112.666867. Copyright © 2012 American Heart Association, Inc.

10 mayo 2012

AJNR. Analysis of Intra-Aneurysmal Flow for Cerebral Aneurysms with Cerebral Angiography

L.-D. Jou and M.E. Mawad

BACKGROUND AND PURPOSE: Hemodynamics is an important factor in the development and rupture of cerebral aneurysms. Current techniques for measuring blood flow in cerebral aneurysms suffer from various limitations and have not been able to address our clinical needs. A new technique has been developed for effective evaluation of intra-aneurysmal flow based on high-frame-rate cerebral angiography, especially for flow-diverters. Published online before print May 10, 2012, doi: 10.3174/ajnr.A3057 AJNR 2012 33: 1679-1684. Copyright © 2012 by American Journal of Neuroradiology

12 abril 2012

AJNR. Preliminary Experience with the Percutaneous Embolization of Juvenile Angiofibromas Using Only Ethylene-Vinyl Alcohol Copolymer (Onyx) for Preoperative Devascularization Prior to Surgical Resection

J.J. Gemmete, S. Patel, A.S. Pandey, S.E. Sullivan, E.L. McKean, L.J. Marentette and N. Chaudhary

BACKGROUND AND PURPOSE: Juvenile angiofibromas are hypervascular tumors that may benefit from preoperative devascularization to reduce intraoperative blood loss. Our purpose was to evaluate the extent of angiographic devascularization and intraoperative blood loss by using only Onyx for percutaneous juvenile angiofibroma tumor embolization. Published online before print April 12, 2012, doi: 10.3174/ajnr.A3043 AJNR 2012 33: 1669-1675. Published online before print April 12, 2012, doi: 10.3174/ajnr.A3043 AJNR 2012 33: 1669-1675. Copyright © 2012 American Heart Association, Inc.

01 septiembre 2012

NEUROSURGERY. Magnetic Resonance Thermometry-Guided Laser-Induced Thermal Therapy for Intracranial Neoplasms: Initial Experience

Jethwa, Pinakin R. MD; Barrese, James C. MD; Gowda, Ashok PhD; Shetty, Anil MBBS, ME; Danish, Shabbar F. MD

BACKGROUND: Laser-induced thermal therapy is a promising tool in the neurosurgeons armamentarium. This methodology has seen a resurgence in application as a result of advances in technology. Neurosurgery: September 2012 - Volume 71 - Issue - p ons133–ons145 doi: 10.1227/NEU.0b013e31826101d4. Copyright © by the Congress of Neurological Surgeons

01 septiembre 2012

NEUROSURGERY. Angiographic Detection and Characterization of “Cryptic Venous Anomalies” Associated With Spinal Cord Cavernous Malformations Using Flat-Panel Catheter Angiotomography

Pearl, Monica S. MD; Chen, James X. BS; Gregg, Lydia MA, CMI; San Millàn, Diego MD; Belzberg, Allan MD; Jallo, George MD; Gailloud, Philippe MD

BACKGROUND: Spinal cord cavernous malformations (CMs) are associated with 2 types of angiographically occult “cryptic venous anomalies,” which differ in location with respect to the spinal cord. The anatomic distinction between superficial and intramedullary is important in that the latter heighten the risks of CM resection. Neurosurgery: September 2012 - Volume 71 - Issue - p ons125–ons132 doi: 10.1227/NEU.0b013e31825d8f9a. Copyright © by the Congress of Neurological Surgeons.

20 septiembre 2012

RADIOLOGY. Intracranial Aneurysms: Midterm Outcome of Pipeline Embolization Device—A Prospective Study in 143 Patients with 178 Aneurysms

Simon Chun-Ho Yu, MD, Ching-Kwong Kwok, FRCS, Pui-Wai Cheng, FRCR, Kwong-Yau Chan, FRCS, Samuel Shun Lau, FRCR, Wai-Man Lui, FRCS, Ka-Ming Leung, FRCS, Raymand Lee, FRCR, Harold Kin-Ming Cheng, FRCS, Yuk-Ling Cheung, FRCR, Chi-Ming Chan, FRCR, George Kwok-Chu Wong, FRCS, Joyce Wai-Yi Hui, FRCR, Yiu-Chung Wong, FRCR, Chong-Boon Tan, FRCR, Wai-Lun Poon, FRCR, Kai-Yuen Pang, FRCS, Alain Kai-Sing Wong, FRCS and Kai-Hung Fung, FRCR

Purpose: To evaluate the midterm clinical and angiographic outcomes after pipeline embolization device (PED) placement for treatment of intracranial aneurysms. Published online before print September 20, 2012, doi: 10.1148/Radiology 12120422. Copyright © RSNA, 2012

30 junio 2012

CVIR. Endovascular Acute Stroke Treatment Performed by Vascular Interventional Radiologists: Is It Safe and Efficacious?

Lars Fjetland, Sumit Roy, Kathinka D. Kurz, Jan Petter Larsen and Martin W. Kurz

To evaluate the safety and efficacy of neurointerventional procedures in acute stroke patients performed by a team of vascular interventional radiologists in close cooperation with diagnostic neuroradiologists and stroke neurologists and to compare the results with those of previous reports from centres with specialised interventional neuroradiologists. CardioVascular and Interventional Radiology Volume 35, Number 5 (2012), 1029-1035, DOI: 10.1007/s00270-012-0438-5

28 agosto 2012

JVIR. Clinical Improvement after Extracranial Venoplasty in Multiple Sclerosis

David Hubbard, MD , Donald Ponec, MD , Justin Gooding, MD , Richard Saxon, MD , Heidi Sauder, PhD and Mark Haacke, PhD

Purpose: This study proposed to prospectively evaluate safety and clinical changes in outpatient endovascular treatment in patients with multiple sclerosis (MS) and chronic cerebrospinal venous insufficiency (CCSVI). Journal of Vascular and Interventional Radiology Volume 23, Issue 10 , Pages 1302-1308, October 2012. Copyright © SIR, 2012

26 junio 2012

JVIR. Percutaneous Image-guided Delivery for the Transplantation of Mesenchymal Stem Cells in the Setting of Degenerated Intervertebral Discs

J. David Prologo, MD , Ali Pirasteh, MD , Nathan Tenley, BS , Lewis Yuan, BS , David Corn, BS , David Hart, MD , Zach Love, MD , Hillard M. Lazarus, MD and Zhenghong Lee, PhD

Purpose: The delivery of mesenchymal stem cells (MSCs) to their site of action has remained a technical hurdle for clinical researchers in the expanding field of stem cell–based therapy. The purpose of this study was to test the feasibility of percutaneous image-guided needle delivery of bone marrow–derived human MSCs (hMSCs) to degenerated intervertebral discs (IVDs) in a preclinical model and to assess the containment of these cells within the IVDs. Journal of Vascular and Interventional Radiology Volume 23, Issue 8 , Pages 1084-1088.e6, August 2012. Copyright © SIR, 2012

01 mayo 2012

RADIOLOGY. Spontaneous Symptomatic Intracranial Vertebrobasilar Dissection: Initial and Follow-up Imaging Findings

Sung Soo Ahn, MD, Byung Moon Kim, MD, PhD, Sang Hyun Suh, MD, PhD, Dong Joon Kim, MD, PhD, Dong Ik Kim, MD, PhD, Yong Sam Shin, MD, PhD, Sam Youl Ha, MD and Young Sub Kwon, MD

Purpose: To evaluate initial radiologic findings of symptomatic intracranial vertebrobasilar dissections (VBDs) as well as the results at follow-up imaging of dissections that are conservatively managed. Published online before print May 1, 2012, doi: 10.1148/radiol.12112331 July 2012. Radiology, 264, 196-202. Copyright © RSNA, 2012

01 agosto 2012

NEUROSURGERY. Long-term Results of Enterprise Stent-Assisted Coiling of Cerebral Aneurysms

Fargen, Kyle M. MD, MPH; Hoh, Brian L. MD; Welch, Babu G. MD; Pride, G. Lee MD; Lanzino, Giuseppe MD; Boulos, Alan S. MD; Carpenter, Jeffrey S. MD; Rai, Ansaar MD; Veznedaroglu, Erol MD; Ringer, Andrew MD; Rodriguez-Mercado, Rafael MD; Kan, Peter MD; Siddiqui, Adnan MD, PhD; Levy, Elad I. MD; Mocco, J MD, MS

BACKGROUND: The Enterprise Vascular Reconstruction Device and Delivery System (Cordis; the Enterprise stent) was approved for use in conjunction with coiling of wide-necked aneurysms in 2007. No published long-term aneurysm occlusion or complication data exist for the Enterprise system. Neurosurgery: August 2012 - Volume 71 - Issue 2 - p 239–244 doi: 10.1227/NEU.0b013e3182571953. Copyright © by the Congress of Neurological Surgeons

25 septiembre 2012

RADIOLOGY. Coil-treated Aneurysms: Decision Making Regarding Additional Treatment Based on Findings of MR Angiography and Intraarterial DSA

Joanna D. Schaafsma, MD, Birgitta K. Velthuis, MD, PhD, René van den Berg, MD, PhD, Patrick A. Brouwer, MD, MSc, Charles B. L. M. Majoie, MD, PhD, Frederik Barkhof, MD, PhD, Omid Eshghi, MD, Gerard A. P. de Kort, MD, Rob T. H. Lo, MD, Marieke E. S. Sprengers, MD, PhD, Willem-Jan van Rooij, MD, PhD, Joseph C. Bot, MD, PhD and Gabriël J. E. Rinkel, MD

Purpose: To assess whether magnetic resonance (MR) angiography can be used as a noninvasive alternative to intraarterial digital subtraction angiography (DSA) to indicate additional treatment in the follow-up of patients with coil-treated intracranial aneurysms. Published online before print September 25, 2012, doi: 10.1148. Radiology 12112608. Copyright © RSNA, 2012