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https://www.readbyqxmd.com/read/28536522/a-high-resolution-mri-study-of-relationship-between-remodeling-patterns-and-ischemic-stroke-in-patients-with-atherosclerotic-middle-cerebral-artery-stenosis
#1
Dan-Feng Zhang, Yu-Chen Chen, Huiyou Chen, Wei-Dong Zhang, Jun Sun, Cun-Nan Mao, Wen Su, Peng Wang, Xindao Yin
Purpose: Recently, high-resolution magnetic resonance imaging (HR-MRI) has been used to depict the wall characteristics of the intracranial arteries. The aim of this study was to explain the relationship between the remodeling patterns and acute ischemic stroke in patients with atherosclerotic middle cerebral artery (MCA) stenosis using HR-MRI. Materials and Methods: From August 2015 to May 2016, we prospectively screened 33 consecutive patients with unilateral MCA stenosis using time-to-flight MR angiography, including 15 patients with symptomatic MCA stenosis and 18 patients with asymptomatic MCA stenosis...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28531910/extracranial-carotid-disease-and-effect-of-intra-arterial-treatment-in-patients-with-proximal-anterior-circulation-stroke-in-mr-clean
#2
Olvert A Berkhemer, Jordi Borst, Manon Kappelhof, Albert J Yoo, Lucie A van den Berg, Puck S S Fransen, Debbie Beumer, Wouter J Schonewille, Paul J Nederkoorn, Marieke J H Wermer, Henk A Marquering, Hester F Lingsma, Yvo B W E M Roos, Robert J van Oostenbrugge, Diederik W J Dippel, Wim H van Zwam, Charles B L M Majoie, Bart J Emmer, Aad van der Lugt
Background: The presence of extracranial carotid disease (ECD) is associated with less favorable clinical outcomes a in patients with acute ischemic stroke caused by intracranial proximal occlusion. Acute intra-arterial treatment (IAT) in the setting of extracranial and intracranial lesions is considered challenging, and whether it yields improved outcomes remains uncertain. Objective: To examine whether the presence of ECD modified the effect of IAT for intracranial proximal anterior circulation occlusion...
May 23, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28522230/cortical-microinfarcts-in-patients-with-middle-cerebral-artery-stenosis
#3
Xinyi Leng, Hui Fang, Yuehua Pu, Xinying Zou, Yuesong Pan, Yannie O Y Soo, Yuming Xu, Chunxue Wang, Xingquan Zhao, Yilong Wang, Yongjun Wang, David S Liebeskind, Lawrence K S Wong, Thomas W Leung, Liping Liu
BACKGROUND: Cortical microinfarcts (CMIs) have been correlated to cognitive decline and dementia. It was previously considered only visible on microscope, but was recently reported to be visible on 3.0 Tesla magnetic resonance imaging (MRI) and linked to presence of intracranial stenosis. We aimed to investigate CMIs on 3.0 Tesla MRI in patients with M1 middle cerebral artery (MCA-M1) stenosis. METHODS: Patients with a recent non-cardioembolic ischemic stroke or transient ischemic attack and an atherosclerotic MCA-M1 stenosis were recruited...
May 15, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28521359/quantitative-comparison-of-the-intraoperative-utility-of-indocyanine-green-and-fluorescein-videoangiographies-in-cerebrovascular-surgery
#4
Fumihiro Matano, Takayuki Mizunari, Yasuo Murai, Asami Kubota, Yu Fujiki, Shiro Kobayashi, Akio Morita
BACKGROUND: A quantitative analysis comparing indocyanine green videoangiography (ICG-VAG) and fluorescein videoangiography (FL-VAG) in cerebrovascular surgery has not been reported so far. OBJECTIVE: To clear the differences of characteristics of ICG-VAG and FL-VAG by quantitative assessment. METHODS: We prospectively analyzed results from 23 patients (3 males; mean age at surgery: 60.9 years, range: 14-75 years) at our hospital from August 2014 to July 2015...
June 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28506590/rnf213-p-r4810k-variant-and-intracranial-arterial-stenosis-or-occlusion-in-relatives-of-patients-with-moyamoya-disease
#5
Yoshiko Matsuda, Yohei Mineharu, Mitsuru Kimura, Yasushi Takagi, Hatasu Kobayashi, Toshiaki Hitomi, Kouji H Harada, Yoshito Uchihashi, Takeshi Funaki, Susumu Miyamoto, Akio Koizumi
BACKGROUND: This study aimed to determine the effectiveness of genetic testing for the p.R4810K variant (rs112735431) of the Mysterin/RNF213 gene, which is associated with moyamoya disease and other intracranial vascular diseases, in the family members of patients with moyamoya disease. METHODS: We performed genotyping of the RNF213 p.R4810K polymorphism and magnetic resonance angiography on 59 relatives of 18 index patients with moyamoya disease. Nineteen individuals had follow-up magnetic resonance angiography with a mean follow-up period of 7...
May 11, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28500366/comparison-of-3d-magnetic-resonance-imaging-and-digital-subtraction-angiography-for-intracranial-artery-stenosis
#6
Ji Eun Park, Seung Chai Jung, Sang Hun Lee, Ji Young Jeon, Ji Ye Lee, Ho Sung Kim, Choong-Gon Choi, Sang Joon Kim, Deok Hee Lee, Seon-Ok Kim, Sun U Kwon, Dong-Wha Kang, Jong S Kim
OBJECTIVES: To compare three-dimensional high-resolution magnetic resonance imaging (3D HR-MRI) and digital subtraction angiography (DSA) for diagnosing and evaluating stenosis in the entire circle of Willis. METHODS: The study included 516 intracranial arteries from 43 patients with intracranial artery stenosis (ICAS) who underwent both 3D HR-MRI and DSA within 1 month. Two readers independently diagnosed atherosclerosis, dissection, moyamoya disease and vasculitis, rated their diagnostic confidence for each vessel and measured the luminal diameters...
May 12, 2017: European Radiology
https://www.readbyqxmd.com/read/28495179/impact-of-hypertriglyceridemia-on-carotid-stenosis-progression-under-normal-low-density-lipoprotein-cholesterol-levels
#7
Masayuki Kitagami, Ryuta Yasuda, Naoki Toma, Masato Shiba, Mai Nampei, Yoko Yamamoto, Yoshinari Nakatsuka, Hiroshi Sakaida, Hidenori Suzuki
BACKGROUND: Dyslipidemia is a well-known risk factor for carotid stenosis progression, but triglycerides have attracted little attention. The aim of this study was to assess if serum triglycerides affect progression of carotid stenosis in patients with well-controlled low-density lipoprotein cholesterol (LDL-C) levels. METHODS: This is a retrospective study in a single hospital consisting of 71 Japanese patients with internal carotid artery stenosis greater than or equal to 50% and normal serum LDL-C levels who underwent angiographic examination with or without the resultant carotid artery stenting or endarterectomy from 2007 to 2011, and were subsequently followed up for 4 years...
May 8, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28493931/asymptomatic-carotid-artery-stenosis-and-retinal-nerve-fiber-layer-thickness-a-community-based-observational-study
#8
Dandan Wang, Yang Li, Yong Zhou, Cheng Jin, Qi Zhao, Anxin Wang, Shouling Wu, Wen Bin Wei, Xingquan Zhao, Jost B Jonas
PURPOSE: To examine whether an abnormally thin retinal nerve fiber layer (RNFL) is associated with cerebrovascular insufficiency. DESIGN: Community-based study. METHODS: The Asymptomatic Polyvascular Abnormalities in Community Study included Chinese aged 40+ years and without histories of cerebrovascular incidents or coronary heart disease. Using transcranial Doppler and carotid duplex ultrasound examination, we assessed presence and degree of an intracranial arterial stenosis (ICAS) and extracranial carotid arterial stenosis (ECAS) and we measured the RNFL thickness by spectral-domain optical coherence tomography...
2017: PloS One
https://www.readbyqxmd.com/read/28487336/clinical-significance-of-isolated-atypical-transient-symptoms-in-a-cohort-with-transient-ischemic-attack
#9
Philippa C Lavallée, Leila Sissani, Julien Labreuche, Elena Meseguer, Lucie Cabrejo, Céline Guidoux, Isabelle F Klein, Pierre-Jean Touboul, Pierre Amarenco
BACKGROUND AND PURPOSE: Contrary to typical transient symptoms (TS), atypical TS, such as partial sensory deficit, dysarthria, vertigo/unsteadiness, unusual cortical visual deficit, and diplopia, are not usually classified as symptoms of transient ischemic attack when they occur in isolation, and their clinical relevance is frequently denied. METHODS: Consecutive patients with recent TS admitted in our transient ischemic attack clinic (2003-2008) had systematic brain, arterial, and cardiac investigations...
May 9, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28481806/the-association-of-intracranial-vascular-calcification-and-stenosis-with-acute-ischemic-cerebrovascular-events
#10
Brendan Quiney, Stephen M Ying, Daniel S Hippe, Niranjan Balu, Alfonso R Urdaneta-Moncada, Mahmud Mosa-Basha
OBJECTIVE: The aim of this article was to evaluate the association of intracranial artery calcification (IAC) with acute downstream ischemic stroke (dAIS)/transient ischemic attack while considering stenosis. METHODS: Consecutive stroke computed tomography angiography head/neck examinations from January 2010 to April 2010 were reviewed. Per-vessel IAC and stenosis of greater than or equal to 30% were documented by 2 neuroradiologists. Associations between calcification and dAIS were assessed using multivariate logistic regression, controlling for traditional risk factors and stenosis...
May 6, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28468540/-endovascular-treatment-of-complex-vascular-pathology-in-neck-and-brain-region-case-report
#11
Csaba Oláh, Máté Czabajszki, István Lázár
Authors present complex multistage endovascular treatment of female patient with an intradural infiltrative, inoperable tumor of the glomus jugulare, a stenosis of the internal carotid artery and an aneurysm of middle cerebri artery. In the literature our case report is the first announcement in which three pathology coexist ipsilateral in one patient and the patient has been treated step by step by endovascular procedures. Beside the endovascular treatment steps they display glomus jugulare tumor's symptoms, staging, treatment options and also the current treatment guidelines of internal carotid artery stenosis and intracranial aneurysms...
May 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28465268/intracranial-blood-flow-changes-in-patients-with-high-grade-severe-carotid-artery-stenosis-after-stenting
#12
Lei Huang, Wenjie Cao, Liang Ge, Gang Lu, Xiaolong Zhang, Daoying Geng
OBJECTIVE: We investigated whether the cerebral hemodynamic changes of pre- and poststenting in patients with severe carotid stenosis differ by stenosis grades. MATERIALS AND METHODS: We prospectively recruited patients who underwent carotid artery stenting (CAS) after acute ischemic stroke from June 2014 to December 2015. We compared the mean relative cerebral blood flow changes (rCBF) (measured by whole-brain computed tomography [CT] perfusion) pre- and poststenting in patients with high-grade severe stenosis (HGSS 90%-99%) versus patients with low-grade severe stenosis (LGSS 70%-89%)...
April 29, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28463782/asymptomatic-polyvascular-disease-and-the-risks-of-cardiovascular-events-and-all-cause-death
#13
Qian Zhang, Anxin Wang, Shufeng Zhang, Na Li, Shengyun Chen, Yaqing Zhang, Yong Zhou, Shouling Wu, Xingquan Zhao
BACKGROUND AND AIMS: Atherosclerosis is a diffuse and systemic disease. We aimed to assess prevalence and outcome of extracoronary polyvascular disease (polyVD) in the asymptomatic Chinese community population. METHODS: A random sample of 5440 participants aged 40 years or older were enrolled in the Asymptomatic Polyvascular Abnormalities Community Study from 2010 to 2011. Intracranial artery stenosis, extracranial artery stenosis, and lower extremity artery disease were detected by transcranial Doppler and duplex sonography, and by calculating the ankle brachial index...
April 21, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28458702/study-of-the-involved-vascular-territories-in-patients-with-ischemic-stroke-in-kerman-iran
#14
Hossein Ali Ebrahimi, Mohammad Saba, Behnaz Sedighi, Hoda Kamali
BACKGROUND: The races show different cerebrovascular involvements, for example, the involvement of intracranial arteries are higher among Asians than Caucasians. The aim of this study was to investigate the cerebrovascular stenosis pattern by computed tomography angiography (CTA), which is unprecedented in Iran. METHODS: In this study, patients with brain stroke (thrombosis), confirmed by CT scanning and cardiac assessments, who referred to Shafa Hospital in Kerman, Iran, underwent brain and cervical arteries CT angiography to assess involved cerebrovascular territories and also its risk factors from June 2012 to June 2013...
September 2016: ARYA Atherosclerosis
https://www.readbyqxmd.com/read/28455321/nonprocedural-symptomatic-infarction-and-in-stent-restenosis-after-intracranial-angioplasty-and-stenting-in-the-sammpris-trial-stenting-and-aggressive-medical-management-for-the-prevention-of-recurrent-stroke-in-intracranial-stenosis
#15
Colin P Derdeyn, David Fiorella, Michael J Lynn, Tanya N Turan, George A Cotsonis, Bethany F Lane, Jean Montgomery, L Scott Janis, Marc I Chimowitz
BACKGROUND AND PURPOSE: The purpose of this study was to investigate the frequency of symptomatic in-stent restenosis (ISR) and its contribution to nonprocedural symptomatic infarction in the SAMMPRIS trial (Stenting and Aggressive Medical Management for the Prevention of Recurrent Stroke in Intracranial Stenosis). METHODS: Patients without a periprocedural primary end point were followed up to determine the occurrence of any of the following events: ischemic stroke, cerebral infarct with temporary signs, or transient ischemic attack in the territory of the stented artery...
April 28, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28442330/symptomatic-carotid-artery-disease-revascularization
#16
REVIEW
Piero Montorsi, Stefano Galli, Paolo M Ravagnani, Marco Roffi
Patients with symptomatic carotid artery disease should be managed by a multidisciplinary team including neurologists, vascular surgeons and interventionalists. Duplex ultrasound is the most widely used diagnostic modality to assess carotid disease, followed by additional imaging tests (CT- or MR-angiography) to confirm the severity of the stenosis, detect brain lesions, and assess intracranial circulation as well as the supra-aortic anatomy. Although overall randomized trial results favored (CEA) over carotid artery stenting (CAS) in symptomatic patients, this was likely related to the insufficient expertise of the endovascular specialists in several of the trials...
April 22, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/28436268/collateral-circulation-alters-downstream-hemodynamic-stress-caused-by-intracranial-atherosclerotic-stenosis
#17
Xin Liu, David Dornbos, Yuehua Pu, Xinyi Leng, Ligang Song, Baixue Jia, Yuesong Pan, David Wang, Zhongrong Miao, Yilong Wang, Liping Liu, Yongjun Wang
OBJECTIVES: Fractional flow reserve (FFR) accurately predicts the degree of stenosis and is now widely used to identify clinically significant severe coronary artery lesions. In the current study, we utilized a similar indicator, fractional flow (FF), to determine the hemodynamic impact of symptomatic intracranial atherosclerotic stenosis (ICAS) and to assess the correlation of FF with the severity of stenosis and collateral circulation. METHODS: Patients with symptomatic ICAS (70-99% stenosis) confirmed on digital subtraction angiography (DSA) were consecutively recruited...
June 2017: Neurological Research
https://www.readbyqxmd.com/read/28434956/superficial-temporal-artery-middle-cerebral-artery-bypass-surgery-for-refractory-symptomatic-intracranial-atherosclerotic-stenosis
#18
Yan Ma, Fan Yang, Liqun Jiao, Meng Li, Yabing Wang, Yanfei Chen, Feng Ling
OBJECTIVE: To evaluate blood flow changes following bypass surgery for refractory symptomatic intracranial atherosclerotic stenosis. METHODS: We examined a cohort of consecutive patients with symptomatic ICAS. STA-MCA bypass was performed in refractory patients with poor perfusion. Angiograms were graded systematically for antegrade, collateral, and bypass flow, and clinical variables were collected preoperatively, and at 7 days, and 3, 6, and 12 months postoperatively...
April 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28416412/successful-treatment-of-symptomatic-intracranial-carotid-artery-stenosis-using-a-24-mm-long-bare-metal-coronary-stent
#19
Azeem A Rehman, Ryan C Turner, Brandon P Lucke-Wold, SoHyun Boo
BACKGROUND: Intracranial arterial atherosclerosis represents a common cause of stroke. Despite aggressive and optimal medical management, many patients will unfortunately suffer additional cerebrovascular events. The role of endovascular intervention for intracranial atherosclerotic disease continues to be uncertain, particularly in regard to extensive, symptomatic stenosis. CASE DESCRIPTION: We present a case of a 42-year-old male with a complex medical history who presented with recurrent ischemic stroke in the ipsilateral hemisphere despite optimal medical management...
April 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28412909/prolonged-perfusion-predicts-recurrent-ischemic-stroke-but-not-transient-ischemic-attack-in-patients-with-symptomatic-intracranial-stenosis
#20
Linfang Lan, Xinyi Leng, Vincent Ip, Thomas Leung, Yannie Soo, Jill Abrigo, Ka Sing Wong
BACKGROUND: Intracranial arterial stenosis (ICAS) is the dominant cause for ischemic stroke worldwide, with hemodynamic compromise as a crucial contributor. Prolonged perfusion is commonly observed in ICAS patients on CT perfusion (CTP) maps, while the clinical significance of this perfusion pattern has not been elucidated. METHODS: Patients having symptomatic ICAS of 50-99% stenosis with sustained downstream cerebral blood flow (CBF) were enrolled into this study...
April 13, 2017: Current Neurovascular Research
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