3,234 results match your criteria Circle of Willis


Outcomes after coverage of lenticulostriate vessels by flow diverters: a multicenter experience.

J Neurosurg 2019 Jan 11:1-8. Epub 2019 Jan 11.

Departments of1Neurosurgery and.

OBJECTIVEWith the increasing use of flow diversion as treatment for intracranial aneurysms, there is a concomitant increased vigilance in monitoring complications. The low porosity of flow diverters is concerning when the origins of vessels are covered, whether large circle of Willis branches or critical perforators. In this study, the authors report their experience with flow diverter coverage of the lenticulostriate vessels and evaluate their safety and outcomes. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3171/2018.8.JNS18755DOI Listing
January 2019

Submillisievert CT angiography for carotid arteries using wide array CT scanner and latest iterative reconstruction algorithm in comparison with previous generations technologies: Feasibility and diagnostic accuracy.

J Cardiovasc Comput Tomogr 2019 Jan 4. Epub 2019 Jan 4.

Centro Cardiologico Monzino, IRCCS, Via C. Parea 4, 20138, Milan, Italy. Electronic address:

Objectives: To assess evaluability and diagnostic accuracy of a low dose CT angiography (CTA) protocol for carotid arteries using latest Iterative Reconstruction (IR) algorithm in comparison with standard 100 kVp protocol using previous generation CT and IR.

Materials And Methods: 105 patients, referred for CTA of the carotid arteries were prospectively enrolled in our study and underwent CTA with 80 kVp and latest IR algorithm (group 1). Data were retrospectively compared with 100 consecutive patients with similar examination indications that had previously undergone CTA of carotid arteries with a standard 100 kVp protocol and a first generation IR algorithm (group 2). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jcct.2019.01.009DOI Listing
January 2019

Internal Carotid Artery Occlusion Causing Acute Cranial Neuropathies.

J Stroke Cerebrovasc Dis 2019 Jan 9. Epub 2019 Jan 9.

Department of Neurology, Westmead Hospital, Sydney, New South Wales, Australia; Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.

A 54-year-old male with a history of left posterior parietal ischemic stroke, epilepsy, tobacco and marijuana smoking, and alcohol abuse, presented with acute left visual loss and diplopia. On examination, he had reduced left visual acuity and a left oculomotor nerve palsy. CT angiogram from aortic arch to circle of Willis identified extensive thrombus occluding the left common and internal carotid arteries, extending to the left ophthalmic artery. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jstrokecerebrovasdis.2018.12.017DOI Listing
January 2019

Accuracy of blood flow assessment in cerebral arteries with 4D flow MRI: Evaluation with three segmentation methods.

J Magn Reson Imaging 2019 Jan 14. Epub 2019 Jan 14.

Department of Radiation Sciences, Umeå University, Umeå, Sweden.

Background: Accelerated 4D flow MRI allows for high-resolution velocity measurements with whole-brain coverage. Such scans are increasingly used to calculate flow rates of individual arteries in the vascular tree, but detailed information about the accuracy and precision in relation to different postprocessing options is lacking.

Purpose: To evaluate and optimize three proposed segmentation methods and determine the accuracy of in vivo 4D flow MRI blood flow rate assessments in major cerebral arteries, with high-resolution 2D PCMRI as a reference. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1002/jmri.26641DOI Listing
January 2019

Neurosurgical Cadaveric and In Vivo Large Animal Training Models for Cranial and Spinal Approaches and Techniques - Systematic Review of Current Literature.

Neurol Neurochir Pol 2019 Jan 7. Epub 2019 Jan 7.

Department of Neurosurgery, Southmead Hospital, North Bristol Trust, Bristol.

Introduction: Due to its high complexity, neurosurgery consists of a demanding learning curve that requires intense training and a deep knowledge of neuroanatomy. Microsurgical skills development can be achieved through various models of simulation, but as human cadaveric models are not always accessible, cadaveric animal models can provide a reliable environment to enhance the acquisition of surgical dexterity. The aim of the review is to analyze the current role of laboratory training animal brains and to assess their correspondence to the procedures performed in humans. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.5603/PJNNS.a2019.0001DOI Listing
January 2019

Asymmetrical Gadolinium Leakage in Ocular Structures in Stroke Due to Internal Carotid Artery Stenosis or Occlusion.

Clin Neuroradiol 2018 Dec 28. Epub 2018 Dec 28.

Department of Neurology, Universitätsmedizin Mannheim, University of Heidelberg, Mannheim, Germany.

Purpose: Gadolinium leakage in ocular structures (GLOS) on fluid-attenuated inversion recovery images (FLAIR) is a novel imaging marker in acute ischemic stroke. The present study sought to investigate the frequency and pattern of blood-retina barrier impairment in acute ischemic stroke due to internal carotid artery (ICA) stenosis or occlusion as demonstrated by GLOS.

Methods: From a magnetic resonance imaging (MRI) report database patients were identified with acute ischemic stroke due to ICA stenosis/occlusion who underwent repeated MRI with intravenous contrast agent administration and FLAIR and MR angiography (MRA). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00062-018-0754-5DOI Listing
December 2018

Effect of high-intensity interval training on muscle remodeling in rheumatoid arthritis compared to prediabetes.

Arthritis Res Ther 2018 Dec 27;20(1):283. Epub 2018 Dec 27.

Duke Molecular Physiology Institute, Duke University School of Medicine, 300 N Duke St, Durham, NC, 27701, USA.

Background: Sarcopenic obesity, associated with greater risk of cardiovascular disease (CVD) and mortality in rheumatoid arthritis (RA), may be related to dysregulated muscle remodeling. To determine whether exercise training could improve remodeling, we measured changes in inter-relationships of plasma galectin-3, skeletal muscle cytokines, and muscle myostatin in patients with RA and prediabetes before and after a high-intensity interval training (HIIT) program.

Methods: Previously sedentary persons with either RA (n = 12) or prediabetes (n = 9) completed a 10-week supervised HIIT program. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1186/s13075-018-1786-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6307310PMC
December 2018

Flow diversion treatment of complex bifurcation aneurysms beyond the circle of Willis: complications, aneurysm sac occlusion, reabsorption, recurrence, and jailed branch modification at follow-up.

J Neurosurg 2018 Dec 21:1-12. Epub 2018 Dec 21.

1Service de Neuroradiologie, Hôpital Pierre-Paul Riquet, CHU de Toulouse; and.

OBJECTIVEThe purpose of this study is to present the authors' medium-term results, with special emphasis on complications, occlusion rate of the aneurysm sac (digital subtraction angiography [DSA] and MRI), and the fate of cortical branches and perforating arteries covered ("jailed") by the flow diverter (FD) stent.METHODSBetween January 2010 and September 2017, 29 patients (14 female) with 30 aneurysms were treated with an FD stent. Twenty-one aneurysms were at the middle cerebral artery bifurcation, 8 were in the anterior communicating artery region, and 1 was a pericallosal artery bifurcation. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3171/2018.7.JNS18654DOI Listing
December 2018
4 Reads
3.737 Impact Factor

Search for Subsolar-Mass Ultracompact Binaries in Advanced LIGO's First Observing Run.

Authors:
B P Abbott R Abbott T D Abbott F Acernese K Ackley C Adams T Adams P Addesso R X Adhikari V B Adya C Affeldt B Agarwal M Agathos K Agatsuma N Aggarwal O D Aguiar L Aiello A Ain P Ajith B Allen G Allen A Allocca M A Aloy P A Altin A Amato A Ananyeva S B Anderson W G Anderson S V Angelova S Antier S Appert K Arai M C Araya J S Areeda M Arène N Arnaud K G Arun S Ascenzi G Ashton M Ast S M Aston P Astone D V Atallah F Aubin P Aufmuth C Aulbert K AultONeal C Austin A Avila-Alvarez S Babak P Bacon F Badaracco M K M Bader S Bae P T Baker F Baldaccini G Ballardin S W Ballmer S Banagiri J C Barayoga S E Barclay B C Barish D Barker K Barkett S Barnum F Barone B Barr L Barsotti M Barsuglia D Barta J Bartlett I Bartos R Bassiri A Basti J C Batch M Bawaj J C Bayley M Bazzan B Bécsy C Beer M Bejger I Belahcene A S Bell D Beniwal M Bensch B K Berger G Bergmann S Bernuzzi J J Bero C P L Berry D Bersanetti A Bertolini J Betzwieser R Bhandare I A Bilenko S A Bilgili G Billingsley C R Billman J Birch R Birney O Birnholtz S Biscans S Biscoveanu A Bisht M Bitossi M A Bizouard J K Blackburn J Blackman C D Blair D G Blair R M Blair S Bloemen O Bock N Bode M Boer Y Boetzel G Bogaert A Bohe F Bondu E Bonilla R Bonnand P Booker B A Boom C D Booth R Bork V Boschi S Bose K Bossie V Bossilkov J Bosveld Y Bouffanais A Bozzi C Bradaschia P R Brady A Bramley M Branchesi J E Brau T Briant F Brighenti A Brillet M Brinkmann V Brisson P Brockill A F Brooks D D Brown S Brunett C C Buchanan A Buikema T Bulik H J Bulten A Buonanno D Buskulic C Buy R L Byer M Cabero L Cadonati G Cagnoli C Cahillane J Calderón Bustillo T A Callister E Calloni J B Camp M Canepa P Canizares K C Cannon H Cao J Cao C D Capano E Capocasa F Carbognani S Caride M F Carney J Casanueva Diaz C Casentini S Caudill M Cavaglià F Cavalier R Cavalieri G Cella C B Cepeda P Cerdá-Durán G Cerretani E Cesarini O Chaibi S J Chamberlin M Chan S Chao P Charlton E Chase E Chassande-Mottin D Chatterjee B D Cheeseboro H Y Chen X Chen Y Chen H-P Cheng H Y Chia A Chincarini A Chiummo T Chmiel H S Cho M Cho J H Chow N Christensen Q Chu A J K Chua S Chua K W Chung S Chung G Ciani A A Ciobanu R Ciolfi F Cipriano C E Cirelli A Cirone F Clara J A Clark P Clearwater F Cleva C Cocchieri E Coccia P-F Cohadon D Cohen A Colla C G Collette C Collins L R Cominsky M Constancio L Conti S J Cooper P Corban T R Corbitt I Cordero-Carrión K R Corley N Cornish A Corsi S Cortese C A Costa R Cotesta M W Coughlin S B Coughlin J-P Coulon S T Countryman P Couvares P B Covas E E Cowan D M Coward M J Cowart D C Coyne R Coyne J D E Creighton T D Creighton J Cripe S G Crowder T J Cullen A Cumming L Cunningham E Cuoco T Dal Canton G Dálya S L Danilishin S D'Antonio K Danzmann A Dasgupta C F Da Silva Costa V Dattilo I Dave M Davier D Davis E J Daw B Day D DeBra M Deenadayalan J Degallaix M De Laurentis S Deléglise W Del Pozzo N Demos T Denker T Dent R De Pietri J Derby V Dergachev R De Rosa C De Rossi R DeSalvo A S Deutsch O de Varona S Dhurandhar M C Díaz L Di Fiore M Di Giovanni T Di Girolamo A Di Lieto B Ding S Di Pace I Di Palma F Di Renzo A Dmitriev Z Doctor V Dolique F Donovan K L Dooley S Doravari I Dorrington M Dovale Álvarez T P Downes M Drago C Dreissigacker J C Driggers Z Du P Dupej S E Dwyer P J Easter T B Edo M C Edwards A Effler H-B Eggenstein P Ehrens J Eichholz S S Eikenberry M Eisenmann R A Eisenstein R C Essick H Estelles D Estevez Z B Etienne T Etzel M Evans T M Evans V Fafone H Fair S Fairhurst X Fan S Farinon B Farr W M Farr E J Fauchon-Jones M Favata M Fays C Fee H Fehrmann J Feicht M M Fejer F Feng A Fernandez-Galiana I Ferrante E C Ferreira F Ferrini F Fidecaro I Fiori D Fiorucci M Fishbach R P Fisher J M Fishner M Fitz-Axen R Flaminio M Fletcher H Fong J A Font P W F Forsyth S S Forsyth J-D Fournier S Frasca F Frasconi Z Frei A Freise R Frey V Frey P Fritschel V V Frolov P Fulda M Fyffe H A Gabbard B U Gadre S M Gaebel J R Gair L Gammaitoni M R Ganija S G Gaonkar A Garcia C García-Quirós F Garufi B Gateley S Gaudio G Gaur V Gayathri G Gemme E Genin A Gennai D George J George L Gergely V Germain S Ghonge Abhirup Ghosh Archisman Ghosh S Ghosh B Giacomazzo J A Giaime K D Giardina A Giazotto K Gill G Giordano L Glover E Goetz R Goetz B Goncharov G González J M Gonzalez Castro A Gopakumar M L Gorodetsky S E Gossan M Gosselin R Gouaty A Grado C Graef M Granata A Grant S Gras C Gray G Greco A C Green R Green E M Gretarsson P Groot H Grote S Grunewald P Gruning G M Guidi H K Gulati X Guo A Gupta M K Gupta K E Gushwa E K Gustafson R Gustafson O Halim B R Hall E D Hall E Z Hamilton H F Hamilton G Hammond M Haney M M Hanke J Hanks C Hanna O A Hannuksela J Hanson T Hardwick J Harms G M Harry I W Harry M J Hart C-J Haster K Haughian J Healy A Heidmann M C Heintze H Heitmann P Hello G Hemming M Hendry I S Heng J Hennig A W Heptonstall F J Hernandez M Heurs S Hild T Hinderer D Hoak S Hochheim D Hofman N A Holland K Holt D E Holz P Hopkins C Horst J Hough E A Houston E J Howell A Hreibi E A Huerta D Huet B Hughey M Hulko S Husa S H Huttner T Huynh-Dinh A Iess N Indik C Ingram R Inta G Intini H N Isa J-M Isac M Isi B R Iyer K Izumi T Jacqmin K Jani P Jaranowski D S Johnson W W Johnson D I Jones R Jones R J G Jonker L Ju J Junker C V Kalaghatgi V Kalogera B Kamai S Kandhasamy G Kang J B Kanner S J Kapadia S Karki K S Karvinen M Kasprzack M Katolik S Katsanevas E Katsavounidis W Katzman S Kaufer K Kawabe N V Keerthana F Kéfélian D Keitel A J Kemball R Kennedy J S Key F Y Khalili B Khamesra H Khan I Khan S Khan Z Khan E A Khazanov N Kijbunchoo Chunglee Kim J C Kim K Kim W Kim W S Kim Y-M Kim E J King P J King M Kinley-Hanlon R Kirchhoff J S Kissel L Kleybolte S Klimenko T D Knowles P Koch S M Koehlenbeck S Koley V Kondrashov A Kontos M Korobko W Z Korth I Kowalska D B Kozak C Krämer V Kringel A Królak G Kuehn P Kumar R Kumar S Kumar L Kuo A Kutynia S Kwang B D Lackey K H Lai M Landry R N Lang J Lange B Lantz R K Lanza A Lartaux-Vollard P D Lasky M Laxen A Lazzarini C Lazzaro P Leaci S Leavey C H Lee H K Lee H M Lee H W Lee K Lee J Lehmann A Lenon M Leonardi N Leroy N Letendre Y Levin J Li T G F Li X Li S D Linker T B Littenberg J Liu X Liu R K L Lo N A Lockerbie L T London A Longo M Lorenzini V Loriette M Lormand G Losurdo J D Lough G Lovelace H Lück D Lumaca A P Lundgren R Lynch Y Ma R Macas S Macfoy B Machenschalk M MacInnis D M Macleod I Magaña Hernandez F Magaña-Sandoval L Magaña Zertuche R M Magee E Majorana I Maksimovic N Man V Mandic V Mangano G L Mansell M Manske M Mantovani F Marchesoni F Marion S Márka Z Márka C Markakis A S Markosyan A Markowitz E Maros A Marquina F Martelli L Martellini I W Martin R M Martin D V Martynov K Mason E Massera A Masserot T J Massinger M Masso-Reid S Mastrogiovanni A Matas F Matichard L Matone N Mavalvala N Mazumder J J McCann R McCarthy D E McClelland S McCormick L McCuller S C McGuire J McIver D J McManus T McRae S T McWilliams D Meacher G D Meadors M Mehmet J Meidam E Mejuto-Villa A Melatos G Mendell D Mendoza-Gandara R A Mercer L Mereni E L Merilh M Merzougui S Meshkov C Messenger C Messick R Metzdorff P M Meyers H Miao C Michel H Middleton E E Mikhailov L Milano A L Miller A Miller B B Miller J Miller M Millhouse J Mills M C Milovich-Goff O Minazzoli Y Minenkov J Ming C Mishra S Mitra V P Mitrofanov G Mitselmakher R Mittleman D Moffa K Mogushi M Mohan S R P Mohapatra M Montani C J Moore D Moraru G Moreno S Morisaki B Mours C M Mow-Lowry G Mueller A W Muir Arunava Mukherjee D Mukherjee S Mukherjee N Mukund A Mullavey J Munch E A Muñiz M Muratore P G Murray A Nagar K Napier I Nardecchia L Naticchioni R K Nayak J Neilson G Nelemans T J N Nelson M Nery A Neunzert L Nevin J M Newport K Y Ng S Ng P Nguyen T T Nguyen D Nichols A B Nielsen S Nissanke A Nitz F Nocera D Nolting C North L K Nuttall M Obergaulinger J Oberling B D O'Brien G D O'Dea G H Ogin J J Oh S H Oh F Ohme H Ohta M A Okada M Oliver P Oppermann Richard J Oram B O'Reilly R Ormiston L F Ortega R O'Shaughnessy S Ossokine D J Ottaway H Overmier B J Owen A E Pace G Pagano J Page M A Page A Pai S A Pai J R Palamos O Palashov C Palomba A Pal-Singh Howard Pan Huang-Wei Pan B Pang P T H Pang C Pankow F Pannarale B C Pant F Paoletti A Paoli M A Papa A Parida W Parker D Pascucci A Pasqualetti R Passaquieti D Passuello M Patil B Patricelli B L Pearlstone C Pedersen M Pedraza R Pedurand L Pekowsky A Pele S Penn C J Perez A Perreca L M Perri H P Pfeiffer M Phelps K S Phukon O J Piccinni M Pichot F Piergiovanni V Pierro G Pillant L Pinard I M Pinto M Pirello M Pitkin R Poggiani P Popolizio E K Porter L Possenti A Post J Powell J Prasad J W W Pratt G Pratten V Predoi T Prestegard M Principe S Privitera G A Prodi L G Prokhorov O Puncken M Punturo P Puppo M Pürrer H Qi V Quetschke E A Quintero R Quitzow-James F J Raab D S Rabeling H Radkins P Raffai S Raja C Rajan B Rajbhandari M Rakhmanov K E Ramirez A Ramos-Buades Javed Rana P Rapagnani V Raymond M Razzano J Read T Regimbau L Rei S Reid D H Reitze W Ren F Ricci P M Ricker K Riles M Rizzo N A Robertson R Robie F Robinet T Robson A Rocchi L Rolland J G Rollins V J Roma R Romano C L Romel J H Romie D Rosińska M P Ross S Rowan A Rüdiger P Ruggi G Rutins K Ryan S Sachdev T Sadecki M Sakellariadou L Salconi M Saleem F Salemi A Samajdar L Sammut L M Sampson E J Sanchez L E Sanchez N Sanchis-Gual V Sandberg J R Sanders N Sarin B Sassolas B S Sathyaprakash P R Saulson O Sauter R L Savage A Sawadsky P Schale M Scheel J Scheuer P Schmidt R Schnabel R M S Schofield A Schönbeck E Schreiber D Schuette B W Schulte B F Schutz S G Schwalbe J Scott S M Scott E Seidel D Sellers A S Sengupta D Sentenac V Sequino A Sergeev Y Setyawati D A Shaddock T J Shaffer A A Shah M S Shahriar M B Shaner L Shao B Shapiro P Shawhan H Shen D H Shoemaker D M Shoemaker K Siellez X Siemens M Sieniawska D Sigg A D Silva L P Singer A Singh A Singhal A M Sintes B J J Slagmolen T J Slaven-Blair B Smith J R Smith R J E Smith S Somala E J Son B Sorazu F Sorrentino T Souradeep A P Spencer A K Srivastava K Staats M Steinke J Steinlechner S Steinlechner D Steinmeyer B Steltner S P Stevenson D Stocks R Stone D J Stops K A Strain G Stratta S E Strigin A Strunk R Sturani A L Stuver T Z Summerscales L Sun S Sunil J Suresh P J Sutton B L Swinkels M J Szczepańczyk M Tacca S C Tait C Talbot D Talukder D B Tanner M Tápai A Taracchini J D Tasson J A Taylor R Taylor S V Tewari T Theeg F Thies E G Thomas M Thomas P Thomas K A Thorne E Thrane S Tiwari V Tiwari K V Tokmakov K Toland M Tonelli Z Tornasi A Torres-Forné C I Torrie D Töyrä F Travasso G Traylor J Trinastic M C Tringali L Trozzo K W Tsang M Tse R Tso D Tsuna L Tsukada D Tuyenbayev K Ueno D Ugolini A L Urban S A Usman H Vahlbruch G Vajente G Valdes N van Bakel M van Beuzekom J F J van den Brand C Van Den Broeck D C Vander-Hyde L van der Schaaf J V van Heijningen A A van Veggel M Vardaro V Varma S Vass M Vasúth A Vecchio G Vedovato J Veitch P J Veitch K Venkateswara G Venugopalan D Verkindt F Vetrano A Viceré A D Viets S Vinciguerra D J Vine J-Y Vinet S Vitale T Vo H Vocca C Vorvick S P Vyatchanin A R Wade L E Wade M Wade R Walet M Walker L Wallace S Walsh G Wang H Wang J Z Wang W H Wang Y F Wang R L Ward J Warner M Was J Watchi B Weaver L-W Wei M Weinert A J Weinstein R Weiss F Wellmann L Wen E K Wessel P Weßels J Westerweck K Wette J T Whelan B F Whiting C Whittle D Wilken D Williams R D Williams A R Williamson J L Willis B Willke M H Wimmer W Winkler C C Wipf H Wittel G Woan J Woehler J K Wofford W K Wong J Worden J L Wright D S Wu D M Wysocki S Xiao W Yam H Yamamoto C C Yancey L Yang M J Yap M Yazback Hang Yu Haocun Yu M Yvert A Zadrożny M Zanolin T Zelenova J-P Zendri M Zevin J Zhang L Zhang M Zhang T Zhang Y-H Zhang C Zhao M Zhou Z Zhou S J Zhu X J Zhu M E Zucker J Zweizig S Shandera

Phys Rev Lett 2018 Dec;121(23):231103

The Pennsylvania State University, University Park, Pennsylvania 16802, USA.

We present the first Advanced LIGO and Advanced Virgo search for ultracompact binary systems with component masses between 0.2  M_{⊙}-1.0  M_{⊙} using data taken between September 12, 2015 and January 19, 2016. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1103/PhysRevLett.121.231103DOI Listing
December 2018
4 Reads

Cystatin C Expression is Promoted by VEGFA Blocking, With Inhibitory Effects on Endothelial Cell Angiogenic Functions Including Proliferation, Migration, and Chorioallantoic Membrane Angiogenesis.

J Am Heart Assoc 2018 Nov;7(21):e009167

1 School of Basic Medical Sciences Capital Medical University Beijing Key Laboratory of Cancer Invasion & Metastasis Research Beijing China.

Background Vascular development, including vasculogenesis and angiogenesis, is involved in many diseases. Cystatin C ( CST 3) is a commonly used marker of renal dysfunction, and we have previously reported that its expression level is associated with variations in the gerbil circle of Willis. Thus, we hypothesized that CST 3 may affect endothelial function and angiogenic capacity. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1161/JAHA.118.009167DOI Listing
November 2018

Dichotomous scoring of TDP-43 proteinopathy from specific brain regions in 27 academic research centers: associations with Alzheimer's disease and cerebrovascular disease pathologies.

Acta Neuropathol Commun 2018 Dec 19;6(1):142. Epub 2018 Dec 19.

Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, 40536, USA.

TAR-DNA binding protein 43 (TDP-43) proteinopathy is a common brain pathology in elderly persons, but much remains to be learned about this high-morbidity condition. Published stage-based systems for operationalizing disease severity rely on the involvement (presence/absence) of pathology in specific anatomic regions. To examine the comorbidities associated with TDP-43 pathology in aged individuals, we studied data from the National Alzheimer's Coordinating Center (NACC) Neuropathology Data Set. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1186/s40478-018-0641-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6299605PMC
December 2018

Completeness of circle of Willis and white matter hyperintensities in patients with severe internal carotid artery stenosis.

Neurol Sci 2018 Dec 15. Epub 2018 Dec 15.

Cerebrovascular Disease Center, Department of Neurology, People's Hospital, China Medical University, 33 Wenyi Road, Shenhe District, Shenyang, 110016, People's Republic of China.

Background: We investigated whether completeness of the circle of Willis (CoW) protected patients with severe internal carotid artery (ICA) stenosis against white matter hyperintensities (WMHs).

Methods: We included 115 patients with unilateral ICA stenosis ≥ 70%. The completeness of CoW was assessed and WMHs were rated on a visual scale. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10072-018-3683-9DOI Listing
December 2018

Bilateral Cerebrovascular Stroke as an Initial Presenting Symptom of Moyamoya Disease.

Case Rep Crit Care 2018 13;2018:2591494. Epub 2018 Nov 13.

Lincoln Medical and Mental Health Center, 234 E 149Th St., Bronx, NY 10451, USA.

Moyamoya disease is a rare condition affecting the circle of Willis and its branching arteries. While the pathogenesis is unclear, it causes progressive occlusion of multiple cerebral vessels leading to severe strokes. We report a case of a 47-year-old Hispanic woman with HTN presented with altered mental status and bilateral upper and lower extremity weakness with dystonic-like upper extremity movement. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1155/2018/2591494DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6260547PMC
November 2018

[Efficacy of carotid endarterectomy in patients with vertebrobasilar insufficiency without significant lesion of vertebral arteries].

Angiol Sosud Khir 2018 ;24(4):104-108

Clinic of Faculty Surgery, Samara State Medical University of the RF Ministry of Public Health, Samara, Russia.

The authors examined efficacy of carotid endarterectomy (CEA) in treatment of patients suffering from vertebrobasilar insufficiency (VBI) without significant involvement of the vertebral arteries. The study included a total of 297 patients with VBI and diagnosed as having stenosis of the bifurcation of the carotid arteries amounting to 70% and more, with no significant involvement of the vertebral arteries revealed. All patients underwent CEA: eversion CEA was performed in 226 (76. Read More

View Article

Download full-text PDF

Source
January 2018
1 Read

Assessment of the Prevalence of Vascular Anomalies of the Circle of Willis Based on the Autopsy of Cadavers in Kurdish Race Between 2016 and 2017.

Mater Sociomed 2018 Oct;30(3):189-192

Department of Neurosurgery, Kermanshah University of Medical Sciences, Kermanshah, Iran.

Introduction: Cerebral arterial variations are commonly associated with cerebrovascular disease and should be considered during brain surgeries. Since some cerebrovascular diseases are seen in certain breeds, it seems that different distributions of cerebral arterial variations depend on race.

Aim: The aim of this study was to determine the random incidence of vascular anomalies of the circle of Willis in autopsy of the cadavers. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.5455/msm.2018.30.189-192DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6195410PMC
October 2018
1 Read

9.4T Magnetic Resonance Imaging of the Mouse Circle of Willis Enables Serial Characterization of Flow-Induced Vascular Remodeling by Computational Fluid Dynamics.

Curr Neurovasc Res 2018 Nov 27. Epub 2018 Nov 27.

Cannon Stroke and Vascular Research Center, University at Buffalo, Buffalo, NY 14260. United States.

Background: The neurovasculature dynamically responds to changes in cerebral blood flow by vascular remodeling processes. Serial imaging studies in mouse models could help to characterize pathologic and physiologic flow-induced remodeling of the Circle of Willis (CoW).

Method: We induced flow-driven pathologic cerebral vascular remodeling in the CoW of mice (n=3) by ligation of the left common carotid artery (CCA), and the right external carotid and pterygopalatine arteries, increasing blood flow through the basilar and the right internal carotid arteries. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2174/1567202616666181127165943DOI Listing
November 2018
1 Read

The probability of incomplete or hypoplastic circle of Willis (Reply).

Ann Thorac Surg 2018 Nov 23. Epub 2018 Nov 23.

Department of Pediatric Cardiac Surgery and Pediatrics, University Hospital Erlangen, Friedrich Alexander University Erlangen-NürnbergLoschgestraße 15, 91054 Erlangen, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.athoracsur.2018.10.039DOI Listing
November 2018

Reproducibility of the fetal cerebral vessels assessment in full and late term pregnancies.

J Matern Fetal Neonatal Med 2018 Nov 25:1-7. Epub 2018 Nov 25.

b Servicio de Obstetricia , Hospital Universitario y Politécnico La Fe , Valencia , Spain.

Objective: Data concerning feasibility of the fetal cerebral Doppler examination in full term and late term pregnancy is lacking. Our purpose was to perform an evaluation of these arteries with power Doppler ultrasound, calculating the percentage of identification and measurement and the intraobserver reproducibility.

Methods: This was a cross sectional study evaluating a population of 578 normally grown fetuses divided according to the week of examination. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1080/14767058.2018.1542681DOI Listing
November 2018
1 Read

Endovascular Treatment for Vasospasm after Aneurysmal Subarachnoid Hemorrhage Based on Data of JR-NET3.

Neurol Med Chir (Tokyo) 2018 Dec 21;58(12):495-502. Epub 2018 Nov 21.

Department of Neurosurgery, Graduate School of Medical Sciences, Kyushu University.

Endovascular treatments for vasospasm after subarachnoid hemorrhage are typically performed for patients who are refractory to recommended medical therapies. We analyzed the current status of endovascular treatments based on the data of Japanese Registry of Neuroendovascular Therapy (JR-NET)3, and evaluated factors related to improvement of imaging findings and neurological condition, and to mechanical hemorrhage complications. We collected data of 1211 treatments performed from 2010 to 2014. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2176/nmc.oa.2018-0212DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6300693PMC
December 2018
8 Reads

New estimates of blood flow rates in the vertebral artery of euarchontans and their implications for encephalic blood flow scaling: A response to Seymour and Snelling (2018).

J Hum Evol 2018 Nov 16. Epub 2018 Nov 16.

Department of Evolutionary Anthropology, Duke University, Durham, NC, 27708, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jhevol.2018.10.002DOI Listing
November 2018

Simulations of blood as a suspension predicts a depth dependent hematocrit in the circulation throughout the cerebral cortex.

PLoS Comput Biol 2018 Nov 19;14(11):e1006549. Epub 2018 Nov 19.

Department of Bioengineering, University of Illinois at Chicago, Chicago, IL, United States of America.

Recent advances in modeling oxygen supply to cortical brain tissue have begun to elucidate the functional mechanisms of neurovascular coupling. While the principal mechanisms of blood flow regulation after neuronal firing are generally known, mechanistic hemodynamic simulations cannot yet pinpoint the exact spatial and temporal coordination between the network of arteries, arterioles, capillaries and veins for the entire brain. Because of the potential significance of blood flow and oxygen supply simulations for illuminating spatiotemporal regulation inside the cortical microanatomy, there is a need to create mathematical models of the entire cerebral circulation with realistic anatomical detail. Read More

View Article

Download full-text PDF

Source
http://dx.plos.org/10.1371/journal.pcbi.1006549
Publisher Site
http://dx.doi.org/10.1371/journal.pcbi.1006549DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6277127PMC
November 2018
4 Reads

Long-term impact of critical silent cerebrovascular disease in patients undergoing coronary artery bypass surgery: a propensity score and multivariate analyses.

Perfusion 2018 Nov 16:267659118813042. Epub 2018 Nov 16.

2 Nippon Medical School Hospital, Tokyo, Japan.

Background:: Cerebrovascular disease (CVD) with brain hypoperfusion is a strong risk factor for stroke. However, how this pathology influences long-term outcomes after coronary artery bypass graft (CABG) surgery is not known.

Methods:: Magnetic resonance imaging/angiography (MRI/A) of the neck and brain was performed in 318 out of 575 consecutive CABG patients between May 2005 and April 2018. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1177/0267659118813042DOI Listing
November 2018
2 Reads

ASL perfusion features and type of circle of Willis as imaging markers for cerebral hyperperfusion after carotid revascularization: a preliminary study.

Eur Radiol 2018 Nov 15. Epub 2018 Nov 15.

Department of Vascular Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, No. 1 Shuaifuyuan, Beijing, China.

Objectives: Cerebral hyperperfusion (CH) could be a disastrous outcome causing complication after carotid revascularization if not managed properly and timely. The aim of this study was to investigate the association between preoperative arterial spin labelling (ASL) perfusion features and circle of Willis (CoW) pattern with CH.

Methods: Forty-eight consecutive carotid stenosis patients who underwent carotid endarterectomy (CEA) or carotid artery stenting (CAS) were enrolled. Read More

View Article

Download full-text PDF

Source
http://link.springer.com/10.1007/s00330-018-5816-1
Publisher Site
http://dx.doi.org/10.1007/s00330-018-5816-1DOI Listing
November 2018
8 Reads

Capillary flow disturbances after experimental subarachnoid hemorrhage: a contributor to delayed cerebral ischemia?

Microcirculation 2018 Nov 15:e12516. Epub 2018 Nov 15.

Center of Functionally Integrative Neuroscience (CFIN) Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.

Background: The high mortality and morbidity after subarachnoid hemorrhage (SAH) is partly due to delayed cerebral ischemia, which is traditionally ascribed to development of angiographic vasospasms. This relation has been challenged, and capillary flow disturbances are proposed as another mechanism contributing to brain damage after SAH.

Objective: To investigate capillary flow changes four days following experimental SAH. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/micc.12516DOI Listing
November 2018
1 Read

Backward sensitivity analysis and reduced-order covariance estimation in noninvasive parameter identification for cerebral arteries.

Int J Numer Method Biomed Eng 2018 Nov 13:e3170. Epub 2018 Nov 13.

IMAG, Université de Montpellier, CC051, Montpellier, France.

Using a previously developed inversion platform for functional cerebral medical imaging with ensemble Kalman filters, this work analyzes the sensitivity of the results with respect to different parameters entering the physical model and inversion procedure, such as the inlet flow rate from the heart, the choice of the boundary conditions, and the nonsymmetry in the network terminations. It also proposes an alternative low complexity construction for the covariance matrix of the hemodynamic parameters of a network of arteries including the circle of Willis. The platform takes as input patient-specific blood flow rates extracted from magnetic resonance angiography and magnetic resonance imaging (dicom files) and is applied to several available patients data. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1002/cnm.3170DOI Listing
November 2018

Pattern of cerebral blood flow and the interrelationship of vascular parameters of transcranial Doppler imaging in children with sickle cell disease.

J Clin Ultrasound 2018 Nov 13. Epub 2018 Nov 13.

Department of Pediatrics, Faculty of Medicine, Kuwait University, Sulaibikhat, Kuwait.

Purpose: We assessed the pattern of cerebral blood flow and the relationship between the different transcranial Doppler imaging (TCDI) vascular parameters in children with sickle cell disease (SCD).

Methods: Forty-three SCD pediatric patients with a stable condition (21 HbSS, 19 HbSβ Thal, and 3 HbSD), aged 10.1 ± 3. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1002/jcu.22663DOI Listing
November 2018
8 Reads

Acute Occlusion of the Distal Internal Carotid Artery : Single Center Experience in 46 Consecutive Cases, review of the literature and proposal of a classification.

Clin Neuroradiol 2018 Nov 13. Epub 2018 Nov 13.

Stroke Unit, Department of Neuroscience, Molinette Hospital, Turin, Italy.

Purpose: The acute distal intracranial occlusion of the internal carotid artery (ICA) is a very complex heterogeneous pathology, characterized by various patterns. Aim of this work is to identify the different types and propose a classification.

Methods: Among the patients admitted for stroke in the anterior circulation from august 2014 to October 2017, 46 (25%) presented with intracranial distal carotid artery occlusion. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00062-018-0743-8DOI Listing
November 2018

Childhood Moyamoya: Looking Back to the Future.

Pediatr Neurol 2018 Oct 15. Epub 2018 Oct 15.

Department of Neurology, University of Washington, Seattle, Washington.

Moyamoya is a chronic, progressive steno-occlusive arteriopathy that typically affects the anterior circulation arteries of the circle of Willis. A network of deep thalamoperforating and lenticulostriate collaterals develop to by-pass the occlusion giving rise to the characteristic angiographic "puff of smoke" appearance. Moyamoya confers a lifelong risk of stroke and neurological demise, with peak age of presentation in childhood ranging between five and 10 years. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S08878994183083
Publisher Site
http://dx.doi.org/10.1016/j.pediatrneurol.2018.10.006DOI Listing
October 2018
5 Reads

Influence of the circle of Willis on leptomeningeal collateral flow in anterior circulation occlusive stroke: Friend or foe?

J Neurol Sci 2019 Jan 3;396:69-75. Epub 2018 Nov 3.

Department of Neurology, Christian Doppler Medical Center, Paracelsus Medical University, Salzburg, Austria. Electronic address:

Background: Clinical outcome after large vessel occlusion (LVO) stroke depends on collateral integrity. We aimed to evaluate whether the completeness of the circle of Willis (CoW) and anterior temporal artery (ATA) determines the status of leptomeningeal collaterals (LC) in patients with acute LVO (internal carotid artery (ICA) and middle cerebral artery M1 (MCA) occlusion) treated with endovascular thrombectomy.

Patients And Methods: LC, cross-flow through the anterior communicating artery (ACoA), presence of the ipsilateral posterior communicating artery (IpsiPCoA) and presence of the ATA were evaluated using CT angiography. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S0022510X183045
Publisher Site
http://dx.doi.org/10.1016/j.jns.2018.11.002DOI Listing
January 2019
7 Reads

On the association between abdominal aorta and basilar artery diameters: a population-based study in community-dwelling older adults.

J Ultrasound 2018 Nov 9. Epub 2018 Nov 9.

Sleep Disorders Center, Mayo Clinic School of Medicine, Jacksonville, FL, USA.

Introduction: Information on the relationship between the diameters of the abdominal aorta (AA) and the basilar artery (BA) is limited. Using the Atahualpa Project cohort, we aimed to assess this association in Atahualpa residents aged ≥ 60 years.

Materials And Methods: Atahualpa residents aged ≥ 60 years underwent abdominal ultrasound and MRA of intracranial vessels. Read More

View Article

Download full-text PDF

Source
http://link.springer.com/10.1007/s40477-018-0338-x
Publisher Site
http://dx.doi.org/10.1007/s40477-018-0338-xDOI Listing
November 2018
7 Reads

Pathological correlates of brain arterial calcifications.

Cardiovasc Pathol 2019 Jan - Feb;38:7-13. Epub 2018 Oct 12.

Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY. Electronic address:

Background: In clinical practice, calcifications seen on computed tomographic studies within the large brain arteries are often referred to as a surrogate marker for cholesterol-mediated atherosclerosis. However, limited data exist to support the association between calcification and atherosclerosis. In this study, we examined if intracranial arterial calcifications were associated with cholesterol-mediated intracranial large artery atherosclerosis (ILAA) within the arteries of the circle of Willis in an autopsy-based sample. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S10548807183020
Publisher Site
http://dx.doi.org/10.1016/j.carpath.2018.09.003DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6294705PMC
October 2018
13 Reads

The probability of imcomplete or hypoplastic circle of Willis.

Ann Thorac Surg 2018 Nov 2. Epub 2018 Nov 2.

Izmir Katip Celebi UniversityAtaturk Education and Training Hospital, Department of Cardiovascular Surgery.

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S00034975183155
Publisher Site
http://dx.doi.org/10.1016/j.athoracsur.2018.09.040DOI Listing
November 2018
5 Reads

Intracerebral steal phenomenon in symptomatic carotid artery disease.

J Neuroradiol 2018 Oct 30. Epub 2018 Oct 30.

Department of Radiology, Medical Imaging Center, University Medical Center Groningen, University of Groningen, PO Box 30.001, 9700 RB Groningen, The Netherlands. Electronic address:

Background And Purpose: Intracerebral steal is a paradoxical vasodilatory response that reduces cerebral blood flow (CBF) in hemodynamically compromised brain tissue when blood is rerouted to more healthy areas. The aim of our study was to investigate the presence and extent of steal in patients with steno-occlusive internal carotid artery (ICA) disease, and to assess its relation with collateral blood flow through the circle of Willis (CoW).

Materials And Methods: Thirty-eight patients with symptomatic steno-occlusive ICA disease underwent MRI examination with arterial spin labeling (ASL) perfusion imaging before and after a vasodilatory challenge. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.neurad.2018.09.008DOI Listing
October 2018
9 Reads

GW170817: Measurements of Neutron Star Radii and Equation of State.

Authors:
B P Abbott R Abbott T D Abbott F Acernese K Ackley C Adams T Adams P Addesso R X Adhikari V B Adya C Affeldt B Agarwal M Agathos K Agatsuma N Aggarwal O D Aguiar L Aiello A Ain P Ajith B Allen G Allen A Allocca M A Aloy P A Altin A Amato A Ananyeva S B Anderson W G Anderson S V Angelova S Antier S Appert K Arai M C Araya J S Areeda M Arène N Arnaud K G Arun S Ascenzi G Ashton M Ast S M Aston P Astone D V Atallah F Aubin P Aufmuth C Aulbert K AultONeal C Austin A Avila-Alvarez S Babak P Bacon F Badaracco M K M Bader S Bae P T Baker F Baldaccini G Ballardin S W Ballmer S Banagiri J C Barayoga S E Barclay B C Barish D Barker K Barkett S Barnum F Barone B Barr L Barsotti M Barsuglia D Barta J Bartlett I Bartos R Bassiri A Basti J C Batch M Bawaj J C Bayley M Bazzan B Bécsy C Beer M Bejger I Belahcene A S Bell D Beniwal M Bensch B K Berger G Bergmann S Bernuzzi J J Bero C P L Berry D Bersanetti A Bertolini J Betzwieser R Bhandare I A Bilenko S A Bilgili G Billingsley C R Billman J Birch R Birney O Birnholtz S Biscans S Biscoveanu A Bisht M Bitossi M A Bizouard J K Blackburn J Blackman C D Blair D G Blair R M Blair S Bloemen O Bock N Bode M Boer Y Boetzel G Bogaert A Bohe F Bondu E Bonilla R Bonnand P Booker B A Boom C D Booth R Bork V Boschi S Bose K Bossie V Bossilkov J Bosveld Y Bouffanais A Bozzi C Bradaschia P R Brady A Bramley M Branchesi J E Brau T Briant F Brighenti A Brillet M Brinkmann V Brisson P Brockill A F Brooks D D Brown S Brunett C C Buchanan A Buikema T Bulik H J Bulten A Buonanno D Buskulic C Buy R L Byer M Cabero L Cadonati G Cagnoli C Cahillane J Calderón Bustillo T A Callister E Calloni J B Camp M Canepa P Canizares K C Cannon H Cao J Cao C D Capano E Capocasa F Carbognani S Caride M F Carney G Carullo J Casanueva Diaz C Casentini S Caudill M Cavaglià F Cavalier R Cavalieri G Cella C B Cepeda P Cerdá-Durán G Cerretani E Cesarini O Chaibi S J Chamberlin M Chan S Chao P Charlton E Chase E Chassande-Mottin D Chatterjee K Chatziioannou B D Cheeseboro H Y Chen X Chen Y Chen H-P Cheng H Y Chia A Chincarini A Chiummo T Chmiel H S Cho M Cho J H Chow N Christensen Q Chu A J K Chua S Chua K W Chung S Chung G Ciani A A Ciobanu R Ciolfi F Cipriano C E Cirelli A Cirone F Clara J A Clark P Clearwater F Cleva C Cocchieri E Coccia P-F Cohadon D Cohen A Colla C G Collette C Collins L R Cominsky M Constancio L Conti S J Cooper P Corban T R Corbitt I Cordero-Carrión K R Corley N Cornish A Corsi S Cortese C A Costa R Cotesta M W Coughlin S B Coughlin J-P Coulon S T Countryman P Couvares P B Covas E E Cowan D M Coward M J Cowart D C Coyne R Coyne J D E Creighton T D Creighton J Cripe S G Crowder T J Cullen A Cumming L Cunningham E Cuoco T Dal Canton G Dálya S L Danilishin S D'Antonio K Danzmann A Dasgupta C F Da Silva Costa V Dattilo I Dave M Davier D Davis E J Daw B Day D DeBra M Deenadayalan J Degallaix M De Laurentis S Deléglise W Del Pozzo N Demos T Denker T Dent R De Pietri J Derby V Dergachev R De Rosa C De Rossi R DeSalvo O de Varona S Dhurandhar M C Díaz T Dietrich L Di Fiore M Di Giovanni T Di Girolamo A Di Lieto B Ding S Di Pace I Di Palma F Di Renzo A Dmitriev Z Doctor V Dolique F Donovan K L Dooley S Doravari I Dorrington M Dovale Álvarez T P Downes M Drago C Dreissigacker J C Driggers Z Du P Dupej S E Dwyer P J Easter T B Edo M C Edwards A Effler H-B Eggenstein P Ehrens J Eichholz S S Eikenberry M Eisenmann R A Eisenstein R C Essick H Estelles D Estevez Z B Etienne T Etzel M Evans T M Evans V Fafone H Fair S Fairhurst X Fan S Farinon B Farr W M Farr E J Fauchon-Jones M Favata M Fays C Fee H Fehrmann J Feicht M M Fejer F Feng A Fernandez-Galiana I Ferrante E C Ferreira F Ferrini F Fidecaro I Fiori D Fiorucci M Fishbach R P Fisher J M Fishner M Fitz-Axen R Flaminio M Fletcher H Fong J A Font P W F Forsyth S S Forsyth J-D Fournier S Frasca F Frasconi Z Frei A Freise R Frey V Frey P Fritschel V V Frolov P Fulda M Fyffe H A Gabbard B U Gadre S M Gaebel J R Gair L Gammaitoni M R Ganija S G Gaonkar A Garcia C García-Quirós F Garufi B Gateley S Gaudio G Gaur V Gayathri G Gemme E Genin A Gennai D George J George L Gergely V Germain S Ghonge Abhirup Ghosh Archisman Ghosh S Ghosh B Giacomazzo J A Giaime K D Giardina A Giazotto K Gill G Giordano L Glover E Goetz R Goetz B Goncharov G González J M Gonzalez Castro A Gopakumar M L Gorodetsky S E Gossan M Gosselin R Gouaty A Grado C Graef M Granata A Grant S Gras C Gray G Greco A C Green R Green E M Gretarsson P Groot H Grote S Grunewald P Gruning G M Guidi H K Gulati X Guo A Gupta M K Gupta K E Gushwa E K Gustafson R Gustafson O Halim B R Hall E D Hall E Z Hamilton H F Hamilton G Hammond M Haney M M Hanke J Hanks C Hanna M D Hannam O A Hannuksela J Hanson T Hardwick J Harms G M Harry I W Harry M J Hart C-J Haster K Haughian J Healy A Heidmann M C Heintze H Heitmann P Hello G Hemming M Hendry I S Heng J Hennig A W Heptonstall F J Hernandez M Heurs S Hild T Hinderer W C G Ho D Hoak S Hochheim D Hofman N A Holland K Holt D E Holz P Hopkins C Horst J Hough E A Houston E J Howell A Hreibi E A Huerta D Huet B Hughey M Hulko S Husa S H Huttner T Huynh-Dinh A Iess N Indik C Ingram R Inta G Intini B S Irwin H N Isa J-M Isac M Isi B R Iyer K Izumi T Jacqmin K Jani P Jaranowski D S Johnson W W Johnson D I Jones R Jones R J G Jonker L Ju J Junker C V Kalaghatgi V Kalogera B Kamai S Kandhasamy G Kang J B Kanner S J Kapadia S Karki K S Karvinen M Kasprzack M Katolik S Katsanevas E Katsavounidis W Katzman S Kaufer K Kawabe N V Keerthana F Kéfélian D Keitel A J Kemball R Kennedy J S Key F Y Khalili B Khamesra H Khan I Khan S Khan Z Khan E A Khazanov N Kijbunchoo Chunglee Kim J C Kim K Kim W Kim W S Kim Y-M Kim E J King P J King M Kinley-Hanlon R Kirchhoff J S Kissel L Kleybolte S Klimenko T D Knowles P Koch S M Koehlenbeck S Koley V Kondrashov A Kontos M Korobko W Z Korth I Kowalska D B Kozak C Krämer V Kringel B Krishnan A Królak G Kuehn P Kumar R Kumar S Kumar L Kuo A Kutynia S Kwang B D Lackey K H Lai M Landry P Landry R N Lang J Lange B Lantz R K Lanza A Lartaux-Vollard P D Lasky M Laxen A Lazzarini C Lazzaro P Leaci S Leavey C H Lee H K Lee H M Lee H W Lee K Lee J Lehmann A Lenon M Leonardi N Leroy N Letendre Y Levin J Li T G F Li X Li S D Linker T B Littenberg J Liu X Liu R K L Lo N A Lockerbie L T London A Longo M Lorenzini V Loriette M Lormand G Losurdo J D Lough C O Lousto G Lovelace H Lück D Lumaca A P Lundgren R Lynch Y Ma R Macas S Macfoy B Machenschalk M MacInnis D M Macleod I Magaña Hernandez F Magaña-Sandoval L Magaña Zertuche R M Magee E Majorana I Maksimovic N Man V Mandic V Mangano G L Mansell M Manske M Mantovani F Marchesoni F Marion S Márka Z Márka C Markakis A S Markosyan A Markowitz E Maros A Marquina F Martelli L Martellini I W Martin R M Martin D V Martynov K Mason E Massera A Masserot T J Massinger M Masso-Reid S Mastrogiovanni A Matas F Matichard L Matone N Mavalvala N Mazumder J J McCann R McCarthy D E McClelland S McCormick L McCuller S C McGuire J McIver D J McManus T McRae S T McWilliams D Meacher G D Meadors M Mehmet J Meidam E Mejuto-Villa A Melatos G Mendell D Mendoza-Gandara R A Mercer L Mereni E L Merilh M Merzougui S Meshkov C Messenger C Messick R Metzdorff P M Meyers H Miao C Michel H Middleton E E Mikhailov L Milano A L Miller A Miller B B Miller J Miller M Millhouse J Mills M C Milovich-Goff O Minazzoli Y Minenkov J Ming C Mishra S Mitra V P Mitrofanov G Mitselmakher R Mittleman D Moffa K Mogushi M Mohan S R P Mohapatra M Montani C J Moore D Moraru G Moreno S Morisaki B Mours C M Mow-Lowry G Mueller A W Muir Arunava Mukherjee D Mukherjee S Mukherjee N Mukund A Mullavey J Munch E A Muñiz M Muratore P G Murray A Nagar K Napier I Nardecchia L Naticchioni R K Nayak J Neilson G Nelemans T J N Nelson M Nery A Neunzert L Nevin J M Newport K Y Ng S Ng P Nguyen T T Nguyen D Nichols A B Nielsen S Nissanke A Nitz F Nocera D Nolting C North L K Nuttall M Obergaulinger J Oberling B D O'Brien G D O'Dea G H Ogin J J Oh S H Oh F Ohme H Ohta M A Okada M Oliver P Oppermann Richard J Oram B O'Reilly R Ormiston L F Ortega R O'Shaughnessy S Ossokine D J Ottaway H Overmier B J Owen A E Pace G Pagano J Page M A Page A Pai S A Pai J R Palamos O Palashov C Palomba A Pal-Singh Howard Pan Huang-Wei Pan B Pang P T H Pang C Pankow F Pannarale B C Pant F Paoletti A Paoli M A Papa A Parida W Parker D Pascucci A Pasqualetti R Passaquieti D Passuello M Patil B Patricelli B L Pearlstone C Pedersen M Pedraza R Pedurand L Pekowsky A Pele S Penn A Perego C J Perez A Perreca L M Perri H P Pfeiffer M Phelps K S Phukon O J Piccinni M Pichot F Piergiovanni V Pierro G Pillant L Pinard I M Pinto M Pirello M Pitkin R Poggiani P Popolizio E K Porter L Possenti A Post J Powell J Prasad J W W Pratt G Pratten V Predoi T Prestegard M Principe S Privitera G A Prodi L G Prokhorov O Puncken M Punturo P Puppo M Pürrer H Qi V Quetschke E A Quintero R Quitzow-James F J Raab D S Rabeling H Radkins P Raffai S Raja C Rajan B Rajbhandari M Rakhmanov K E Ramirez A Ramos-Buades Javed Rana P Rapagnani V Raymond M Razzano J Read T Regimbau L Rei S Reid D H Reitze W Ren F Ricci P M Ricker G M Riemenschneider K Riles M Rizzo N A Robertson R Robie F Robinet T Robson A Rocchi L Rolland J G Rollins V J Roma R Romano C L Romel J H Romie D Rosińska M P Ross S Rowan A Rüdiger P Ruggi G Rutins K Ryan S Sachdev T Sadecki M Sakellariadou L Salconi M Saleem F Salemi A Samajdar L Sammut L M Sampson E J Sanchez L E Sanchez N Sanchis-Gual V Sandberg J R Sanders N Sarin B Sassolas B S Sathyaprakash P R Saulson O Sauter R L Savage A Sawadsky P Schale M Scheel J Scheuer P Schmidt R Schnabel R M S Schofield A Schönbeck E Schreiber D Schuette B W Schulte B F Schutz S G Schwalbe J Scott S M Scott E Seidel D Sellers A S Sengupta D Sentenac V Sequino A Sergeev Y Setyawati D A Shaddock T J Shaffer A A Shah M S Shahriar M B Shaner L Shao B Shapiro P Shawhan H Shen D H Shoemaker D M Shoemaker K Siellez X Siemens M Sieniawska D Sigg A D Silva L P Singer A Singh A Singhal A M Sintes B J J Slagmolen T J Slaven-Blair B Smith J R Smith R J E Smith S Somala E J Son B Sorazu F Sorrentino T Souradeep A P Spencer A K Srivastava K Staats M Steinke J Steinlechner S Steinlechner D Steinmeyer B Steltner S P Stevenson D Stocks R Stone D J Stops K A Strain G Stratta S E Strigin A Strunk R Sturani A L Stuver T Z Summerscales L Sun S Sunil J Suresh P J Sutton B L Swinkels M J Szczepańczyk M Tacca S C Tait C Talbot D Talukder D B Tanner M Tápai A Taracchini J D Tasson J A Taylor R Taylor S V Tewari T Theeg F Thies E G Thomas M Thomas P Thomas K A Thorne E Thrane S Tiwari V Tiwari K V Tokmakov K Toland M Tonelli Z Tornasi A Torres-Forné C I Torrie D Töyrä F Travasso G Traylor J Trinastic M C Tringali A Trovato L Trozzo K W Tsang M Tse R Tso D Tsuna L Tsukada D Tuyenbayev K Ueno D Ugolini A L Urban S A Usman H Vahlbruch G Vajente G Valdes N van Bakel M van Beuzekom J F J van den Brand C Van Den Broeck D C Vander-Hyde L van der Schaaf J V van Heijningen A A van Veggel M Vardaro V Varma S Vass M Vasúth A Vecchio G Vedovato J Veitch P J Veitch K Venkateswara G Venugopalan D Verkindt F Vetrano A Viceré A D Viets S Vinciguerra D J Vine J-Y Vinet S Vitale T Vo H Vocca C Vorvick S P Vyatchanin A R Wade L E Wade M Wade R Walet M Walker L Wallace S Walsh G Wang H Wang J Z Wang W H Wang Y F Wang R L Ward J Warner M Was J Watchi B Weaver L-W Wei M Weinert A J Weinstein R Weiss F Wellmann L Wen E K Wessel P Weßels J Westerweck K Wette J T Whelan B F Whiting C Whittle D Wilken D Williams R D Williams A R Williamson J L Willis B Willke M H Wimmer W Winkler C C Wipf H Wittel G Woan J Woehler J K Wofford W K Wong J Worden J L Wright D S Wu D M Wysocki S Xiao W Yam H Yamamoto C C Yancey L Yang M J Yap M Yazback Hang Yu Haocun Yu M Yvert A Zadrożny M Zanolin T Zelenova J-P Zendri M Zevin J Zhang L Zhang M Zhang T Zhang Y-H Zhang C Zhao M Zhou Z Zhou S J Zhu X J Zhu A B Zimmerman Y Zlochower M E Zucker J Zweizig

Phys Rev Lett 2018 Oct;121(16):161101

LIGO, California Institute of Technology, Pasadena, California 91125, USA.

On 17 August 2017, the LIGO and Virgo observatories made the first direct detection of gravitational waves from the coalescence of a neutron star binary system. The detection of this gravitational-wave signal, GW170817, offers a novel opportunity to directly probe the properties of matter at the extreme conditions found in the interior of these stars. The initial, minimal-assumption analysis of the LIGO and Virgo data placed constraints on the tidal effects of the coalescing bodies, which were then translated to constraints on neutron star radii. Read More

View Article

Download full-text PDF

Source
https://link.aps.org/doi/10.1103/PhysRevLett.121.161101
Publisher Site
http://dx.doi.org/10.1103/PhysRevLett.121.161101DOI Listing
October 2018
6 Reads

Ocular and cerebral infarction from periocular filler injection.

Orbit 2018 Oct 30:1-3. Epub 2018 Oct 30.

a Department of Ophthalmology , University of Miami , Miami , FL , USA.

A 20-year-old woman presented with loss of vision in her right eye and a "black nose" after receiving hyaluronic acid filler injections in her right glabella 1 month prior. Her vision was no light perception, and external examination revealed resolving skin necrosis at the nasal tip. A dilated fundus exam showed a fibrotic membrane emanating from a pale optic nerve and a diffusely atrophic retina with sclerotic vessels. Read More

View Article

Download full-text PDF

Source
https://www.tandfonline.com/doi/full/10.1080/01676830.2018.1
Publisher Site
http://dx.doi.org/10.1080/01676830.2018.1537287DOI Listing
October 2018
9 Reads

Risk factors for hyperperfusion-induced intracranial hemorrhage after carotid artery stenting in patients with symptomatic severe carotid stenosis evaluation.

J Neurointerv Surg 2018 Oct 27. Epub 2018 Oct 27.

Department of Neurosurgery, Changhai Hospital, Second Military Medical University, Shanghai, China.

Background: Analyzing risk factors for hyperperfusion-induced intracranial hemorrhage (HICH) after carotid artery stenting (CAS) in patients with symptomatic severe carotid stenosis.

Methods: This study retrospectively analyzed clinical data of 210 patients, who had symptomatic severe carotid stenosis (70-99%) and received CAS treatment between June 2009 and June 2015, and evaluated the relationship of HICH with patients' clinical baseline data, imaging features, and treatment strategies.

Results: Seven patients (3. Read More

View Article

Download full-text PDF

Source
http://jnis.bmj.com/lookup/doi/10.1136/neurintsurg-2018-0139
Publisher Site
http://dx.doi.org/10.1136/neurintsurg-2018-013998DOI Listing
October 2018
3 Reads

Visualizing artery-specific blood flow patterns above the circle of Willis with vessel-encoded arterial spin labeling.

Magn Reson Med 2018 Oct 25. Epub 2018 Oct 25.

Wellcome Centre for Integrative Neuroimaging, FMRIB Division, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom.

Purpose: To establish the feasibility of using vessel-encoded pseudocontinuous arterial spin labeling (VEPCASL) for noninvasive vascular territory imaging (VTI) and artery-specific dynamic angiography of a large number of arterial branches above the circle of Willis within a clinically feasible scan time.

Methods: 3D time-of-flight angiography was used to select a labeling plane and establish 7 pairs of encoding cycles. These were used for VEPCASL VTI and dynamic 2D angiography (8 min and 3 min acquisition times, respectively) in healthy volunteers, allowing the separation of signals arising from 13 arterial branches (including extracranial arteries) in postprocessing. Read More

View Article

Download full-text PDF

Source
http://doi.wiley.com/10.1002/mrm.27507
Publisher Site
http://dx.doi.org/10.1002/mrm.27507DOI Listing
October 2018
7 Reads

Morning glory disc anomaly and facial hemangiomas in a girl with moyamoya syndrome.

Indian J Ophthalmol 2018 Nov;66(11):1644-1646

Department of Ophthalmology, Little Flower Hospital and Research Centre, Angamaly, Kerala, India.

Moyamoya disease (MMD) is a chronic progressive, occlusive cerebrovascular disease in the circle of Willis and the feeding arteries. Morning glory disc anomaly (MGDA) is characterized by an abnormal excavated optic disc with radial emergence of blood vessels from the rim of the disc. We describe a case of moyamoya syndrome (MMS), a rare entity among Indian ethnicity, associated with MGDA and regressed facial capillary hemangiomas, which are relatively less reported presentations of MMD. Read More

View Article

Download full-text PDF

Source
http://www.ijo.in/text.asp?2018/66/11/1644/244066
Publisher Site
http://dx.doi.org/10.4103/ijo.IJO_538_18DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6213674PMC
November 2018
4 Reads

Association Between Incomplete Circle of Willis and Carotid Vulnerable Atherosclerotic Plaques.

Arterioscler Thromb Vasc Biol 2018 Nov;38(11):2744-2749

Center for Biomedical Imaging Research, Department of Biomedical Engineering, Tsinghua University School of Medicine, Beijing, China (C.Y., R.L., X.Z.).

Objective- Carotid high-risk plaque, characterized by intraplaque hemorrhage, fibrous cap rupture, and large lipid-rich necrotic core, is associated with cerebrovascular events. This study sought to investigate the relationship between high-risk carotid plaque and an incomplete circle of Willis (COW). Approach and Results- Patients were recruited from a multicenter study, Chinese Atherosclerosis Risk Evaluation (CARE-II) and underwent 3-dimensional time-of-flight magnetic resonance angiography for intracranial arteries and 2-dimensional multicontrast magnetic resonance vessel wall imaging for carotid arteries on a 3. Read More

View Article

Download full-text PDF

Source
https://www.ahajournals.org/doi/10.1161/ATVBAHA.118.311797
Publisher Site
http://dx.doi.org/10.1161/ATVBAHA.118.311797DOI Listing
November 2018
5 Reads
6.000 Impact Factor

Single-center experience with six-month follow-up of FRED Jr® flow diverters for intracranial aneurysms in small arteries.

Acta Radiol 2018 Oct 25:284185118805266. Epub 2018 Oct 25.

2 Department of Neurosurgery, Turku University Hospital, Turku, Finland.

Background: The flow-diverter stent (FD) has been proven to be a safe and efficient device in the treatment of large and giant wide-necked proximal internal carotid artery aneurysms.

Purpose: To report the outcomes using Flow Re-Direction Endoluminal Device Junior (Fred Jr) flow diverters in the treatment of aneurysms in or distal to the circle of Willis with parent artery diameter < 2.5 mm. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1177/0284185118805266DOI Listing
October 2018
6 Reads

Anatomical variations and dimensions of arteries in the anterior part of the circle of Willis.

Folia Morphol (Warsz) 2018 Oct 12. Epub 2018 Oct 12.

Institute of Anatomy, Faculty of Medicine, University of Prishtina, 10000 Prishtina, Kosovo.

Background: The aim of this study was to investigate different anatomic variations and dimensions of anterior part of the CW and their prevalence on Kosovo's population.

Materials And Methods: This is an observative descriptive and retrospective study performed at the University Clinical Center, Clinic of Radiology. The three-dimensional time-of-flight (TOF) technique was used for MRA imaging to evaluate the anatomy of the CW in 513 adults without clinical manifestations for cerebrovascular disease. Read More

View Article

Download full-text PDF

Source
https://journals.viamedica.pl/folia_morphologica/article/vie
Publisher Site
http://dx.doi.org/10.5603/FM.a2018.0095DOI Listing
October 2018
95 Reads
0.524 Impact Factor

Posterior circulation involvement and collateral flow pattern in moyamoya disease with the RNF213 polymorphism.

Childs Nerv Syst 2018 Oct 3. Epub 2018 Oct 3.

Department of Neurosurgery, Korea University Medical Center, Ansan Hospital, 123 Jeokgeum-ro, Danwon-gu, Ansan, Gyeonggi-do, 15355, South Korea.

Purpose: Moyamoya disease is a chronic cerebrovascular disorder characterized by progressive stenosis of the circle of Willis with a compensatory collateral vessel network. Recent studies have identified the ring finger protein 213 gene (RNF213) as the unique susceptibility gene for moyamoya disease. The purpose of this study was to compare clinical features of moyamoya disease, especially angiographic findings, between patients with and without the RNF213 mutation. Read More

View Article

Download full-text PDF

Source
http://link.springer.com/10.1007/s00381-018-3985-5
Publisher Site
http://dx.doi.org/10.1007/s00381-018-3985-5DOI Listing
October 2018
2 Reads

Reversible cerebral vasoconstriction syndrome in paediatric patients with systemic lupus erythematosus: implications for management.

Dev Med Child Neurol 2018 Sep 23. Epub 2018 Sep 23.

Paediatric Neurology, Assistance Publique-Hôpitaux de Paris, Hôpital Universitaire Necker-Enfants Malades, Paris, France.

Microvascular brain injury is well recognized in neuropsychiatric systemic lupus erythematosus (SLE), but cerebral large artery involvement is being debated. Three females with SLE, aged 9 to 14 years, had immunosuppressive treatment intensification because of lupus nephritis. Within the following days or weeks, they presented with intense cephalalgia - isolated or associated with neurological symptoms - and no or mild hypertension. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/dmcn.14031DOI Listing
September 2018
7 Reads

Quantifying Hemodynamic Changes in Moyamoya Disease Based on Two-Dimensional Cine Phase-Contrast Magnetic Resonance Imaging and Computational Fluid Dynamics.

World Neurosurg 2018 Dec 19;120:e1301-e1309. Epub 2018 Sep 19.

Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China. Electronic address:

Objective: To investigate hemodynamic changes in moyamoya disease (MMD) via two-dimensional cine phase-contrast magnetic resonance imaging and computational fluid dynamics.

Methods: In 18 patients with MMD and 10 healthy control subjects, phase-contrast magnetic resonance imaging was performed to quantify flow rate of main supplying arteries, including internal carotid arteries (ICAs) and vertebral arteries. Mean flow rate in these vessels was adopted as the patient-specific boundary condition for computational fluid dynamics simulation of the circle of Willis in MMD and control groups. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.09.057DOI Listing
December 2018
4 Reads
2.420 Impact Factor