12 diciembre 2013

STROKE. Clinical Sciences. ABCD3 and ABCD3-I Scores Are Superior to ABCD2 Score in the Prediction of Short- and Long-Term Risks of Stroke After Transient Ischemic Attack

Takuya Kiyohara, MD; Masahiro Kamouchi, MD; Yasuhiro Kumai, MD; Toshiharu Ninomiya, MD; Jun Hata, MD; Sohei Yoshimura, MD; Tetsuro Ago, MD; Yasushi Okada, MD; Takanari Kitazono, MD for the FSR investigators

Background and Purpose: Several risk scores have been developed to predict the stroke risk after transient ischemic attack (TIA). However, the validation of these scores in different cohorts is still limited. The objective of this study was to elucidate whether these scores were able to predict short-term and long-term risks of stroke in patients with TIA.

10 enero 2013

STROKE. Real-time Validation of Transcranial Doppler Criteria in Assessing Recanalization During Intra-arterial Procedures for Acute Ischemic Stroke An International, Multicenter Study

Georgios Tsivgoulis, MD; Marc Ribo, MD; Marta Rubiera, MD; Spyros N. Vasdekis, MD; Kristian Barlinn, MD; Dimitrios Athanasiadis, MD; Reza Bavarsad Shahripour, MD; Sotirios Giannopoulos, MD; Elefterios Stamboulis, MD; Mark R. Harrigan, MD; Carlos A. Molina, MD; Andrei V. Alexandrov, MD

Background and Purpose: We sought to evaluate the diagnostic accuracy of ultrasound criteria for recanalization during real-time transcranial Doppler monitoring of intra-arterial reperfusion procedures in acute ischemic stroke patients in an international, multicenter study.

03 enero 2013

STROKE. Subarachnoid Hemorrhage in a Multimodal Approach Heavily Weighted Toward Mechanical Thrombectomy With Solitaire Stent in Acute Stroke

Woong Yoon, MD, PhD; Min Young Jung, MD; Se Hee Jung, MD; Man Seok Park, MD; Joon Tae Kim, MD; Heoung Keun Kang, MD, PhD

Background and Purpose: Subarachnoid hemorrhage (SAH) may appear on computerized tomography scans after mechanical thrombectomy for acute ischemic stroke. The incidence and prognosis of this observation remain unknown. We investigated the frequency and clinical consequences of SAH after treating acute ischemic stroke with a multimodal approach heavily weighted toward mechanical thrombectomy with Solitaire stent.

03 enero 2013

STROKE. The Risk of Stroke or Clinical Impairment After Stereotactic Radiosurgery for ARUBA-Eligible Patients

Bruce E. Pollock, MD; Michael J. Link, MD; Robert D. Brown, MD

Background and Purpose: The best management of patients with unruptured brain arteriovenous malformations (BAVM) is controversial. In this study, we analyzed the stroke rate and functional outcomes of patients having stereotactic radiosurgery (SRS) for unruptured BAVM using the same eligibility criteria and primary end points as the ARUBA trial.

15 enero 2013

STROKE. Endovascular Treatment of Intracranial Aneurysms With Flow Diverters. A Meta-Analysis

Waleed Brinjikji, MD; Mohammad H. Murad, MD, MPH; Giuseppe Lanzino, MD; Harry J. Cloft, MD, PhD; David F. Kallmes, MD

Background and Purpose: Flow diverters are important tools in the treatment of intracranial aneurysms. However, their impact on aneurysmal occlusion rates, morbidity, mortality, and complication rates is not fully examined.

06 diciembre 2012

STROKE. Low Wall Shear Stress Is Independently Associated With the Rupture Status of Middle Cerebral Artery Aneurysms

Yoichi Miura, MD; Fujimaro Ishida, MD; Yasuyuki Umeda, MD; Hiroshi Tanemura, MD; Hidenori Suzuki, MD; Satoshi Matsushima, MD; Shinichi Shimosaka, MD; Waro Taki, MD

Background and Purpose: We determined which hemodynamic parameter independently characterizes the rupture status of middle cerebral artery (MCA) aneurysms using computational fluid dynamics analysis.

13 diciembre 2012

STROKE. Clipping Versus Coiling for Ruptured Intracranial Aneurysms. A Systematic Review and Meta-Analysis

Hui Li, MD*; Rui Pan, MD*; Hongxuan Wang, MD; Xiaoming Rong, MD; Zi Yin, MD; Daniel P. Milgrom, MD; Xiaolei Shi, MD; Yamei Tang, MD, PhD*; Ying Peng, MD, PhD*

Background and Purpose: Endovascular treatment has increasingly been used for aneurismal subarachnoid aneurismal hemorrhage. The aim of this analysis is to assess the current evidence regarding safety and efficiency of clipping compared with coiling.

18 diciembre 2012

STROKE. Delayed Cerebral Ischemia After Subarachnoid Hemorrhage. A Systematic Review of Clinical, Laboratory, and Radiological Predictors

Nicolien K. de Rooij, MD; Gabriel J.E. Rinkel, MD; Jan Willem Dankbaar, MD; Catharina J.M. Frijns, MD

Background and Purpose: Established predictors of delayed cerebral ischemia after aneurysmal subarachnoid hemorrhage are large amounts of extravasated blood and poor clinical condition on admission. The predictive value of other factors is uncertain.

20 noviembre 2012

STROKE. Correlation of Large Artery Intracranial Occlusive Disease With Carotid Intima-Media Thickness and Presence of Carotid Plaque

Xin Yi Leng, PhD; Xiang Yan Chen, PhD; Ping Chook, MD; Li Xiong, PhD; Wen Hua Lin, PhD; Jing Yi Liu, PhD; Brian Tomlinson, MD; G. Neil Thomas, PhD; Tai Hing Lam, MD; Karen S.L. Lam, MD; Bernard M.Y. Cheung, MD, PhD; Ka Sing Wong, MD

Background and Purpose: Large artery intracranial occlusive disease (LAICOD) is a predominant cause of ischemic stroke in China. Carotid intima-media thickness (CIMT) and presence of carotid plaque are also related to subsequent ischemic stroke. However, the correlation between these and LAICOD is less clear.

13 diciembre 2012

STROKE. Characteristics of Ischemic Brain Lesions After Stenting or Endarterectomy for Symptomatic Carotid Artery Stenosis. Results From the International Carotid Stenting Study–Magnetic Resonance Imaging Substudy

Henrik Gensicke, MD; Thomas Zumbrunn, PhD; Lisa M. Jongen, MD; Paul J. Nederkoorn, MD; Sumaira Macdonald, FRCR; Peter A. Gaines, FRCR; Philippe A. Lyrer, MD; Stephan G. Wetzel, MD; Aad van der Lugt, MD; Willem P. Th. M. Mali, MD; Martin M. Brown, MD; H. Bart van der Worp, MD; Stefan T. Engelter, MD; Leo H. Bonati, MD; on behalf of the ICSS-MRI Substudy Investigators

Background and Purpose: In a substudy of the International Carotid Stenting Study (ICSS), more patients had new ischemic brain lesions on diffusion-weighted magnetic resonance imaging (MRI) after stenting (CAS) than after endarterectomy (CEA). In the present analysis, we compared characteristics of diffusion-weighted MRI lesions.

20 noviembre 2012

STROKE. High-Risk Plaque for Carotid Artery Stenting Evaluated With 3-Dimensional T1-Weighted Gradient Echo Sequence

Hiroshi Tanemura, MD; Masayuki Maeda, MD, PhD; Naoki Ichikawa, MD; Yoichi Miura, MD; Yasuyuki Umeda, MD, PhD; Seiji Hatazaki, MD, PhD; Naoki Toma, MD, PhD; Fumio Asakura, MD, PhD; Hidenori Suzuki, MD, PhD; Hiroshi Sakaida, MD, PhD; Satoshi Matsushima, MD, PhD; Waro Taki, MD, PhD

Background and Purpose: Preventing cerebral embolisms is a major concern with carotid artery stenting (CAS). This study evaluated 3-dimensional T1-weighted gradient echo (3D T1GRE) sequence to predict cerebral embolism related to CAS.

17 octubre 2013

STROKE. Clinical Sciences. A Clinical Rule (Sex, Contralateral Occlusion, Age, and Restenosis) to Select Patients for Stenting Versus Carotid Endarterectomy. Systematic Review of Observational Studies With Validation in Randomized Trials

Emmanuel Touzé, MD, PhD*; Ludovic Trinquart, PhD*; Rui Felgueiras, MD; Kittipan Rerkasem, MD, PhD; Leo H. Bonati, MD, PhD; Gayané Meliksetyan, MD; Peter A. Ringleb, MD, PhD; Jean-Louis Mas, MD; Martin M. Brown, MD, FRCP; Peter M. Rothwell, MD, PhD, FRCP, FMedSci in collaboration with the Carotid Stenting Trialists’ Collaboration

Background and Purpose: Compared with carotid endarterectomy (CEA), carotid angioplasty and stenting (CAS) is associated with a higher risk of procedural stroke or death especially in patients with symptomatic stenosis. However, after the perioperative period, risk is similar with both treatments, suggesting that CAS could be an acceptable option in selected patients.

18 julio 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Intracranial Arteries in Individuals with the Elastin Gene Hemideletion of Williams Syndrome

D.P. Wint, J.A. Butman, J.C. Masdeu, A. Meyer-Lindenberg, C.B. Mervis, D. Sarpal, C.A. Morris and K.F. Berman

Background and Purpose: Williams syndrome, a rare genetic disorder with a striking neurobehavioral profile characterized by extreme sociability and impaired visuospatial construction abilities, is caused by a hemideletion that includes the elastin gene, resulting in frequent supravavular aortic stenosis and other stenotic arterial lesions. Strokes have been reported in Williams syndrome. Although the extracranial carotid artery has been studied in a sample of patients with Williams syndrome, proximal intracranial arteries have not.

18 julio 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Accuracy of Vessel-Encoded Pseudocontinuous Arterial Spin-Labeling in Identification of Feeding Arteries in Patients with Intracranial Arteriovenous Malformations

S.L. Yu, R. Wang, R. Wang, S. Wang, Y.Q. Yao, D. Zhang, Y.L. Zhao, Z.T. Zuo, R. Xue, D.J.J. Wang and J.Z. Zhao

Background and Purpose: Identifying feeding arteries of intracranial AVMs is very important for preoperative evaluation. DSA remains the reference standard for diagnosis but is invasive. Our aim was to evaluate the diagnostic accuracy of vessel-encoded pseudocontinuous arterial spin-labeling in identifying feeding arteries of intracranial AVMs by using DSA as the criterion standard.

14 marzo 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Illustrated Review of the Embryology and Development of the Facial Region, Part 2: Late Development of the Fetal Face and Changes in the Face from the Newborn to Adulthood

P.M. Som and T.P. Naidich

Summary: The later embryogenesis of the fetal face and the alteration in the facial structure from birth to adulthood have been reviewed. Part 3 of the review will address the molecular mechanisms that are responsible for the changes described in parts 1 and 2.