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https://www.readbyqxmd.com/read/28431773/atypical-moyamoya-syndrome-with-brain-calcification-and-stenosis-of-abdominal-aorta-and-renal-arteries
#1
Hideki Uchikawa, Katsunori Fujii, Mayuko Fujita, Tomoko Okunushi, Naoki Shimojo
Moyamoya syndrome is a progressive cerebrovascular disease that is characterized by stenosis of the terminal portion of the internal carotid artery and its main branches, in combination with an accompanying disease. We herein describe an 8-year-old boy exhibiting transient loss of consciousness, who had recurrent seizures in infancy with progressive brain calcification. On admission, he was alert but magnetic resonance angiography showed bilateral stenosis of the whole internal carotid artery and proliferation of vascular collaterals, and brain CT revealed calcification on bilateral putamen...
April 18, 2017: Brain & Development
https://www.readbyqxmd.com/read/28431614/permeability-surface-area-product-analysis-in-malignant-brain-edema-prediction-a-pilot-study
#2
O Volny, P Cimflova, T-Y Lee, B K Menon, C D d'Esterre
BACKGROUND AND PURPOSE: Using an extended CT perfusion acquisition (150s), we sought to determine the association between perfusion parameters and malignant edema after ischemic stroke. METHODS: Patients (from prospective study PROVE-IT, NCT02184936) with terminal internal carotid artery±proximal middle cerebral occlusion were involved. CTA was assessed for clot location and status of leptomeningeal collaterals. The following CTP parameters were calculated within the ischemic territory and contralaterally: permeability surface area product (PS), cerebral blood flow (CBF) and cerebral blood volume (CBV)...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28414666/just-a-puff-of-smoke
#3
A Leonard
CASE: A 44 year old woman with a history of stroke s/p aneurysm clipping, seizure, and substance abuse was brought to the hospital after a family member received a call from her friend saying she was acting unusual and may have had a seizure while hanging out on the street. At her baseline, she needed modest assistance in daily activities after her CVA and conversed without issue. Her mother died of a stroke. On exam the patient was afebrile, normotensive with mild tachycardia to 110...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28412828/magnetic-resonance-angiographic-study-of-anatomic-variations-of-the-circle-of-willis-in-a-population-in-tehran
#4
Bahman Jalali Kondori, Fateme Azemati, Sonia Dadseresht
BACKGROUND AND OBJECTIVES: The circle of Willis, an anastomotic polygon at the base of the brain, forms an important collateral network to maintain cerebral blood perfusion. The aim of this study was to investigate different anatomic variations of the circle of Willis and their prevalence. METHODS: This cross-sectional study was conducted on 525 healthy participants including 205 men and 320 women. The mean age of the patients was 51.5 years. Three-dimensional time-of-flight magnetic resonance angiography (3D-TOF MRA) technique was used...
April 2017: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/28409736/angiographic-features-of-hemorrhagic-moyamoya-disease-with-high-recurrence-risk-a-supplementary-analysis-of-the-japan-adult-moyamoya-trial
#5
Takeshi Funaki, Jun C Takahashi, Kiyohiro Houkin, Satoshi Kuroda, Shigekazu Takeuchi, Miki Fujimura, Yasutake Tomata, Susumu Miyamoto
OBJECTIVE In this paper, the authors set out to identify the angiographic features of moyamoya disease with posterior hemorrhage, which is a strong predictor of rebleeding. METHODS This cross-sectional study used the data set of the Japan Adult Moyamoya Trial (clinical trial registration no.: C000000166 [ www.umin.ac.jp/ctr/index.htm ]). The panel designed the ancillary measurement of angiography at onset, classifying the collateral vessels into 3 subtypes: lenticulostriate anastomosis, thalamic anastomosis, and choroidal anastomosis...
April 14, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28405184/optical-imaging-of-the-motor-cortex-following-antidromic-activation-of-the-corticospinal-tract-after-spinal-cord-injury
#6
Kyung H Lee, Un J Kim, Se W Park, Yong G Park, Bae H Lee
Spinal cord injury (SCI) disrupts neuronal networks of ascending and descending tracts at the site of injury, leading to a loss of motor function. Restoration and new circuit formation are important components of the recovery process, which involves collateral sprouting of injured and uninjured fibers. The present study was conducted to determine cortical responses to antidromic stimulation of the corticospinal tracts, to compare changes in the reorganization of neural pathways within normal and spinal cord-injured rats, and to elucidate differences in spatiotemporal activity patterns of the natural progression and reorganization of neural pathways in normal and SCI animals using optical imaging...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28385458/moyamoya-disease-with-occlusion-of-bilateral-vertebral-arteries-and-the-basilar-artery-fed-by-the-collateral-vessels-of-vertebral-arteries-a-rare-case-report
#7
Xiaofeng Deng, Dong Zhang, Yan Zhang, Rong Wang, Bo Wang, Jizong Zhao
The main change of moyamoya disease (MMD) is steno-occlusion at the terminal portion of the bilateral internal carotid arteries (ICAs). Occlusion of distal portions of the bilateral vertebral arteries (VAs) in MMD has never been reported. An 18-year old female was admitted with repeated headache for 13years. Cerebral digital subtraction angiography (DSA) demonstrated occlusion of bilateral ICAs at their terminal portions, moyamoya vessels at the skull base, occlusion of bilateral distal VAs and the basilar artery (BA) fed by the tortuous collateral vessels arising from the cervical segment of VAs...
April 3, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28382613/reduced-internal-carotid-artery-flow-in-color-coded-carotid-duplex-sonography
#8
Fu-Yi Yang, Po-Ren Hsu, Shinn-Kuang Lin
PURPOSE: Reduced flow in the internal carotid artery (ICA) is related to cerebral ischemia. We established a classification of reduced ICA flow through color-coded carotid duplex (CCD) sonography. METHODS: We retrospectively reviewed 25,000 CCD images in sonography laboratory. RESULTS: Reduced ICA flow [flow volume (FV) less than 100 mL/min] was found in 1.2% of all studies, and 270 patients were enrolled. We included 8% patients with lesions proximal to the ICA in Group A, 27% with lesions at the proximal ICA in Group B, 49% with lesions distal to the visible ICA in Group C, and 16% with unknown causes in Group D...
December 15, 2016: Acta Neurologica Taiwanica
https://www.readbyqxmd.com/read/28352979/time-resolved-3d-rotational-angiography-4d-dsa-of-the-lenticulostriate-arteries-display-of-normal-anatomic-variants-and-collaterals-in-cases-with-chronic-obstruction-of-the-mca
#9
S Kammerer, M Mueller-Eschner, J Berkefeld, S Tritt
PURPOSE: The lenticulostriate arteries (LSA) and other perforators may play a role for collateral supply in cases with ischemia due to stenosis or occlusions of the middle cerebral artery (MCA). Purpose of this case series was to evaluate the potential of time-resolved 3D rotational angiography data sets (4D DSA) for detailed visualization of anatomic variants of LSA feeders and for display of local collaterals involving the LSA in cases with chronic MCA obstruction. METHODS: Multiplanar and volume rendering reconstructions of 4D DSA data were computed in addition to standard postprocessing in 24 patients who had indications for 3D rotational angiography (3DRA) of the internal carotid artery (ICA) without pathologies of the ICA, middle cerebral artery (MCA) and anterior cerebral artery (ACA) main stems (n = 18) or with stenosis or chronic occlusion of the MCA (n = 6)...
March 28, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28341559/-moyamoya-disease-associated-with-kidney-angiodysplasia-in-a-child
#10
A Dibi, Z Maana, F Jabourik, A Bentahila
INTRODUCTION: Moyamoya disease is a progressive, chronic occlusive vascular disease of the circle of Willis arteries leading to the development of collateral circulation to compensate the occlusion. CASE REPORT: An 11-year-old girl presented an abrupt loss of consciousness and a right-sided motor deficit. Clinical examination found hypertension with 220/120mmHg arterial blood pressure. Brain magnetic resonance imaging showed a large left hemispheric ischemic lesion...
May 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28335662/performance-of-computed-tomography-angiography-to-determine-anterograde-and-collateral-blood-flow-status-in-patients-with-symptomatic-middle-cerebral-artery-stenosis
#11
Baixue Jia, David S Liebeskind, Ligang Song, Xiaotong Xu, Xuan Sun, Lian Liu, Bo Wang, Zhongrong Miao
Background The purpose of this study was to determine the performance of computed tomography angiography (CTA) by using a scoring system to predict anterograde and collateral blood flow status in patients with symptomatic middle cerebral artery (MCA) stenosis with use of conventional angiography as standard reference. Methods We retrospectively identified all consecutive patients with unilateral symptomatic MCA stenosis in our center who underwent conventional angiography and CTA within 1 month. The anterograde and collateral blood flow (AnCo) scoring system consisted of anterograde score (AnS) and collateral score (CoS)...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28333907/the-effect-of-placing-flow-diverting-stents-in-intracranial-collateral-arteries-of-miniature-pig
#12
Jiwei Wang, Yanan Ding, Qiuxia Wang, Yanan Wang, Shiqing Mu, Lixin Bi, Youxiang Li
BACKGROUND Flow-diverting stent (FDS) has been suggested as an effective intracranial aneurysm treatment. However, the effects of FDS on collateral branches of an aneurysm parent artery still remain unknown. Thus, the present study aimed to comprehensively evaluate the effects of placing a FDS in the intracranial collateral artery, using a miniature pig animal model. MATERIAL AND METHODS Ten healthy miniature pigs were included in the study: one pig was reserved as a control and the remaining nine pigs were placed in three experimental groups: FDS (i...
March 23, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28289756/predictive-value-of-pooled-cerebral-blood-volume-mapping-for-final-infarct-volume-in-patients-with-major-artery-occlusions-a%C3%A2-retrospective-analysis
#13
Lauma Ava, Joachim Berkefeld, Arne Lauer, Alexander Seiler, Waltraud Pfeilschifter, Monika Müller-Eschner, Se-Jong You, Stefan Weidauer, Ulrich Pilatus, Marlies Wagner
PURPOSE: Detection of ischemic core and collateral status is helpful to predict clinical success of thrombectomy in acute cerebral artery occlusion. Angiographic flat panel detector computed tomography (CT) with pooled blood volume (PBV) data acquisition was described to be helpful to estimate ischemic core in stroke patients prior to thrombectomy and to depict cerebral vessels. We therefore retrospectively evaluated preinterventional PBV data of a large collective of ischemic stroke patients prior to thrombectomy to test its predictive value on final infarct considering PBV maps and collateral status...
March 13, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28281383/meandering-flow-void-around-the-splenium-in-moyamoya-disease
#14
Takeshi Mikami, Tomoyoshi Kuribara, Katsuya Komatsu, Yusuke Kimura, Masahiko Wanibuchi, Kiyohiro Houkin, Nobuhiro Mikuni
OBJECTIVES: Meandering flow void around the splenium, which can be recognized on conventional T2-weighted images, implicates collateral flow in the splenial artery in patients with moyamoya disease. In this report, curves of flow voids around the splenium (SFVs) were evaluated in patients with moyamoya disease, and their diagnostic value and pathophysiology were verified. METHODS: A total of 65 consecutive patients with moyamoya disease were included in this analysis...
March 10, 2017: Neurological Research
https://www.readbyqxmd.com/read/28258802/endovascular-stroke-treatment-of-acute-tandem-occlusion-a-single-center-experience
#15
Fabrizio Sallustio, Caterina Motta, Giacomo Koch, Silvia Pizzuto, Bruce C V Campbell, Marina Diomedi, Barbara Rizzato, Alessandro Davoli, Giorgio Loreni, Daniel Konda, Matteo Stefanini, Sebastiano Fabiano, Enrico Pampana, Paolo Stanzione, Roberto Gandini
PURPOSE: To evaluate outcomes and prognostic factors in patients with acute ischemic stroke caused by tandem internal carotid artery/middle cerebral artery occlusion undergoing endovascular treatment. MATERIALS AND METHODS: Characteristics of consecutive patients with tandem occlusion (TO) were extracted from a prospective registry. Collateral vessel quality on pretreatment computed tomographic (CT) angiography was evaluated on a 4-point grading scale, and patients were dichotomized as having poor or good collateral flow...
February 28, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28248916/light-induced-hemiplegia-an-atypical-case-of-retinal-steal-syndrome
#16
David Kerek, Sami Al Kasab, Michael U Antonucci, Raymond D Turner, Tanya N Turan
Atherosclerosis affecting the carotid arteries accounts for up to 20% of ischemic strokes 1. The clinical effects of atherosclerotic occlusive disease vary according to multiple factors, one of which is collateral circulation. In response to a chronic decrease in cerebral perfusion from atherosclerotic occlusion, alternative flow pathways, or collaterals, develop in a variety of patterns. In the setting of carotid occlusion, flow from the Circle of Willis, if complete, often comprises the main cerebral collateral network...
March 2017: Neurologist
https://www.readbyqxmd.com/read/28228577/the-basilar-artery-on-computed-tomography-angiography-prognostic-score-for-basilar-artery-occlusion
#17
Fana Alemseged, Darshan G Shah, Marina Diomedi, Fabrizio Sallustio, Andrew Bivard, Gagan Sharma, Peter J Mitchell, Richard J Dowling, Steven Bush, Bernard Yan, Carlo Caltagirone, Roberto Floris, Mark W Parsons, Christopher R Levi, Stephen M Davis, Bruce C V Campbell
BACKGROUND AND PURPOSE: Basilar artery occlusion is associated with high risk of disability and mortality. This study aimed to assess the prognostic value of a new radiological score: the Basilar Artery on Computed Tomography Angiography (BATMAN) score. METHODS: A retrospective analysis of consecutive stroke patients with basilar artery occlusion diagnosed on computed tomographic angiography was performed. BATMAN score is a 10-point computed tomographic angiography-based grading system which incorporates thrombus burden and the presence of collaterals...
February 22, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28203181/bilateral-superior-cerebellar-artery-embolic-occlusion-with-a-fetal-type-posterior-cerebral-artery-providing-collateral-circulation
#18
Taylor J Bergman, Rachael C Saporito, Thomas Hope
Bilateral infarction of the superior cerebellar arteries with sparing of the rest of the posterior circulation, particularly the posterior cerebral arteries, is an uncommon finding in neurological practice. Most commonly, the deficits of the superior cerebellar arteries and posterior cerebral arteries occur together due to the close proximity of their origins at the top of the basilar artery. A patient was transferred to the neurological intensive care unit with a history of recent-onset falls from standing, profound hypertension, dizziness, and headaches...
September 2016: Case Reports in Neurology
https://www.readbyqxmd.com/read/28191623/the-ivy-sign-on-fluid-attenuated-inversion-recovery-images-related-to-single-photon-emission-computed-tomography-cerebral-blood-flow-in-moyamoya-disease-a-case-report
#19
Fumihiro Matano, Yasuo Murai, Asami Kubota, Takayuki Mizunari, Shiro Kobayashi, Akio Morita
BACKGROUND: Moyamoya disease is an idiopathic progressive cerebrovascular steno-occlusive disorder characterized by the formation of numerous collaterals called moyamoya vessels. Accurate evaluation of vascular status and CBF is needed for prompt treatment to prevent ischemic and/or hemorrhagic events. The pathogenesis of the ivy sign on fluid attenuated inversion recovery (FLAIR) images of moyamoya disease patients is unclear. We report a moyamoya disease case wherein the ivy sign changed in relation to SPECT-measured CBF during progression and following treatment...
January 17, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28188261/role-of-genetic-variation-in-collateral-circulation-in-the-evolution-of-acute-stroke-a-multimodal-magnetic-resonance-imaging-study
#20
Yu-Chieh Jill Kao, Esteban A Oyarzabal, Hua Zhang, James E Faber, Yen-Yu Ian Shih
BACKGROUND AND PURPOSE: No studies have determined the effect of differences in pial collateral extent (number and diameter), independent of differences in environmental factors and unknown genetic factors, on severity of stroke. We examined ischemic tissue evolution during acute stroke, as measured by magnetic resonance imaging and histology, by comparing 2 congenic mouse strains with otherwise identical genetic backgrounds but with different alleles of the Determinant of collateral extent-1 (Dce1) genetic locus...
March 2017: Stroke; a Journal of Cerebral Circulation
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