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https://www.readbyqxmd.com/read/29786833/assessment-of-cerebral-perfusion-and-edema-in-preeclampsia-with-intravoxel-incoherent-motion-mri
#1
Maria Nelander, Daniel Hannsberger, Inger Sundström-Poromaa, Lina Bergman, Jan Weis, Helena Åkerud, Johan Wikström, Anna-Karin Wikström
INTRODUCTION: Cerebral complications are the main reasons for morbidity and mortality in preeclampsia and eclampsia. Still we do not know if the pathophysiology entails hypo- or hyperperfusion of the brain, or how and when edema emerges, due to the difficulty to examine the cerebral circulation. MATERIAL AND METHODS: We have used a non-invasive diffusion weighted magnetic resonance imaging (MRI) technique, intravoxel incoherent motion, to study cerebral perfusion on the capillary level and cerebral edema in women with preeclampsia (n=30), normal pregnancy (n=32) and non-pregnant women (n=16)...
May 22, 2018: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/29784430/microvascular-decompression-for-hemifacial-spasm-surgical-techniques-and-intraoperative-monitoring
#2
M Sindou, P Mercier
Primary hemifacial spasm with few exceptions is due to the vascular compression of the facial nerve that can be evidenced with high resolution MRI. Microvascular decompression is the only curative treatment for this pathology. According to literature review detailed in chapter "conflicting vessels", the compression is located at the facial Root Exit Zone (REZ) in 95% of the cases, and in 5% distally at the cisternal or the intrameatal portion of the root as the sole conflict or in addition to one at brainstem/REZ...
May 18, 2018: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29780939/sixth-cranial-nerve-palsy-and-ipsilateral-trigeminal-neuralgia-caused-by-vertebrobasilar-dolichoectasia
#3
Thong Pham, Jeffrey Wesolowski, Jonathan D Trobe
Purpose: To report an unusual case of vertebrobasilar dolichoectasia causing both trigeminal neuralgia and ipsilateral sixth cranial nerve palsy. Observations: A patient had undergone surgical decompression of trigeminal neuralgia caused by dolichoectatic vertebral and basilar arteries years before presenting with ipsilateral sixth nerve palsy. Brain MRI showed deviant vertebrobasilar arteries that presumably now compressed the sixth cranial nerve. The unaffected left sixth cranial nerve was visible on MRI, but the affected right sixth cranial nerve was not...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29736678/-juvenile-familial-vertebrobasilar-brain-infarctions-due-to-adenosine-deaminase-2-deficiency
#4
T Etgen, T Kiefer, M Luther, R Haberl
No abstract text is available yet for this article.
May 7, 2018: Der Nervenarzt
https://www.readbyqxmd.com/read/29734824/assessment-of-the-effect-of-mesoglycan-in-the-treatment-of-audiovestibular-disorders-of-vascular-origin
#5
Giampiero Neri, Vincenzo Marcelli, Luigi Califano
It is a well-known fact that inner ear diseases are often caused by microcirculatory disorders, and the recent literature is oriented towards investigations into the relationship between the cardiovascular system and cochleovestibular illness with related classical symptoms: tinnitus, hearing loss, and vertigo or instability. These symptoms, and particularly the vertigo, may be the alarm signal of microcirculatory disorders of the labyrinth or vertebrobasilar circulation so as to represent a possible symptom of posterior circulation stroke...
January 2018: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/29726765/aneurysms-with-persistent-filling-after-failed-treatment-with-the-pipeline-embolization-device
#6
Badih Daou, Elias Atallah, Nohra Chalouhi, Robert M Starke, Jeffrey Oliver, Maria Montano, Pascal Jabbour, Robert H Rosenwasser, Stavropoula I Tjoumakaris
OBJECTIVE The Pipeline embolization device (PED) has become a valuable tool in the treatment of cerebral aneurysms. Although failures with PED treatment have been reported, the characteristics and course of these aneurysms remain a topic of uncertainty. METHODS Electronic medical records and imaging studies were reviewed for all patients treated with the PED between July 2010 and March 2015 to identify characteristics of patients and aneurysms with residual filling after PED treatment. RESULTS Of 316 cases treated at a single institution, 281 patients had a long-term follow-up...
May 4, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29723487/clinical-investigation-and-characterization-of-vertebrobasilar-dolichoectasia-and-vertebral-artery-dominance
#7
Xiangfang Meng, Wei Ding, Xijun Wu, Pingwei Di
In clinical practice, the vertebral arteries of a patient are often found to be not equal in size and the basilar artery may not be situated in the center. Our observational study showed that vertebral dominance and basilar bending are common, and their occurrence is related to advanced age and hypertension. The right vertebral dominance tends to coincide with left basilar bending, and, vice versa, the left vertebral dominance tends to coincide with right basilar bending. The left vertebral dominance is more common than the right dominance...
April 2018: Discovery Medicine
https://www.readbyqxmd.com/read/29705020/imaging-of-hemifacial-spasm
#8
M Hermier
Almost all primary hemifacial spasms are associated with one or more neurovascular conflicts, most often at the root exit zone in the immediate vicinity of the brainstem. Imaging has first to exclude a secondary hemifacial spasm and secondly to search for and characterize the responsible neurovascular conflict(s). Magnetic resonance imaging should include high-resolution anatomical hyper T2-weighted sequences and magnetic resonance angiography by using 1.5 or even better 3 Tesla magnets. The most frequent vascular compressions are from the anterior-inferior cerebellar artery, the posterior-inferior cerebellar artery and the vertebrobasilar artery; venous conflicts are very rare...
April 25, 2018: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29696529/utility-of-the-variable-flip-angle-3d-fast-spin-echo-isofse-sequence-on-3t-mr-for-diagnosing-vertebrobasilar-artery-dissection
#9
Masaki Ogawa, Shingo Omata, Hirohito Kan, Nobuyuki Arai, Marehiko Asai, Misugi Urano, Yuta Shibamoto
We aimed to investigate the utility of the isoFSE sequence, one of the variable flip angle 3D fast-spin echo sequences, on 3T-MR for displaying vessel walls and diagnosing vertebrobasilar artery dissection (VAD). We retrospectively evaluated 12 initial and 28 follow-up images from 12 patients diagnosed with either intracranial VAD or carotid artery dissection. The image quality for displaying the vessel wall was scored using a five-point scale (1 poor, 5 excellent) on initial T1-weighted isoFSE images for each region of the arteries...
April 25, 2018: Radiological Physics and Technology
https://www.readbyqxmd.com/read/29688207/-clinical-efficacy-of-reconstructive-operations-on-the-third-v3-segment-of-the-vertebral-artery
#10
A N Vachev, O V Dmitriev, M Iu Stepanov, O V Tereshina
Presented herein are the results of a prospective cohort study of clinical efficacy of medicamentous treatment and operations of shunting to the third segment (V3) of the vertebral artery in patients with vertebrobasilar insufficiency (VBI). The study included a total of 60 patients with pronounced clinical manifestations of VBI and concomitant lesions of the V1 and V2 segments of the vertebral arteries. The patients were found to have no significant involvement of the carotid bifurcation. At the first stage, all patients during 12 months were receiving a course of optimal medicamentous therapy...
2018: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/29682138/successful-retrograde-recanalization-of-acute-right-dominant-vertebral-artery-occlusion-through-the-left-posterior-communicating-artery-in-a-patient-with-acute-vertebrobasilar-ischemic-stroke
#11
Anton A Khilchuk, Maksim V Agarkov, Sergey V Vlasenko, Sergey G Scherbak, Andrey M Sarana, Svetlana V Lebedeva
Advanced endovascular technology and techniques allow interventional radiologists to utilize novel ways of basilar artery recanalization in the setting of acute ischemic stroke, especially when routine approaches are not eligible. Several authors described nonstandard revascularization techniques in acute ischemic strokes due to basilar and middle cerebral arteries occlusions with full technical and clinical success. In this report, we present retrograde right vertebral artery recanalization using left posterior communicating artery for subsequent anterograde balloon angioplasty and stenting of a right vertebral artery ostium followed by full vertebrobasilar blood flow restoration...
April 2018: Radiology Case Reports
https://www.readbyqxmd.com/read/29680283/the-conflicting-vessels-in-hemifacial-spasm-literature-review-and-anatomical-surgical-implications
#12
P Mercier, M Sindou
The conflicting vessels in hemifacial spasm: literature review and anatomical-surgical implications. Since several decades, it has been established that so-called primary hemifacial spasm is linked to neuro-vascular conflicts in the facial nerve, especially its root exit zone (REZ). Based on our review of the detailed publications of literature (2489 patients), together with our own series (340 patients), the responsible vessels found at surgery were: the posterior inferior cerebellar artery in 47.2%, the anterior inferior cerebellar artery in 45...
April 18, 2018: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29678166/why-does-my-patient-s-basilar-artery-continue-to-grow-a-four-year-case-study-of-a-patient-with-symptoms-of-vertebrobasilar-dolichoectasia
#13
Dao Pei Zhang, Yan Fang Peng, Qian Kun Ma, Min Zhao, Huai Liang Zhang, Suo Yin
BACKGROUND: Vertebrobasilar dolichoectasia (VBD) is a clinical entity associated with ischemic stroke, compression of cranial nerves or brainstem, and hydrocephalus. There have been relatively few studies following the progression of VBD in patients presenting with a variety of diverse clinical features. CASE PRESENTATION: Here, we report a case study of a male with progressive VBD who was followed from November 2012 to December 2016. The patient had diagnosed hypertension for several years and suffered from left peripheral facial paralysis, recurrent ischemic attacks in the brainstem and cerebellum, obstructive hydrocephalus and frequent pneumonia...
April 20, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29672624/anatomical-distribution-of-cerebral-microbleeds-and-intracerebral-hemorrhage-in-vertebrobasilar-dolichoectasia
#14
Alex Förster, Ralf Wenz, Máté Elöd Maros, Johannes Böhme, Mansour Al-Zghloul, Angelika Alonso, Christoph Groden, Holger Wenz
OBJECTIVES: Vertebrobasilar dolichoectasia (VBD) is a dilatative arteriopathy associated with intracerebral hemorrhage. In the present study, we sought to evaluate the frequency and anatomical distribution of cerebral microbleeds (cMBs) and intracerebral hemorrhage (ICH) in VBD. METHODS: From a MRI database 94 VBD patients were identified and analyzed with special emphasis on cMBs and ICH on T2*-weighted gradient echo images (GRE) in relation to the established diagnostic MRI criteria of VBD (diameter, height, and lateral position)...
2018: PloS One
https://www.readbyqxmd.com/read/29658088/pathogenetic-role-of-endothelial-dysfunction-in-idiopathic-vestibulopathy
#15
E V Udut, P P Shchetinin, T V Rudenko, F Lucieer, H Kingma, A P Shchetinina, M O Pleshkov, V P Demkin, V V Udut
Comparative analysis of the groups of patients with idiopathic bilateral vestibular hypofunction and a group of vestibulopathy patients with vertebrobasilar insufficiency demonstrated identity of the basic and additional diagnostic parameters in these syndromes as well as similarity in clinical diagnostic and anamnesis data. In all cases, functional assessment of endothelium-dependent vasodilation and selected biochemical marker sICAM-1 revealed endothelial dysfunction. Drug correction of endothelial dysfunction positively affected the manifestations of major and minor features of the syndrome, which confirmed the contribution of endothelial functional disturbances to the pathogenesis of bilateral vestibular hypofunction...
April 16, 2018: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29651586/revascularization-techniques-for-acute-basilar-artery-occlusion-technical-considerations-and-outcome-in-the-setting-of-severe-posterior-circulation-steno-occlusive-disease
#16
Eberhard Siebert, Georg Bohner, Sarah Zweynert, Volker Maus, Anastasios Mpotsaris, Thomas Liebig, Christoph Kabbasch
PURPOSE: To describe the clinical and radiological characteristics, frequency, technical aspects and outcome of endovascular treatment of acute basilar artery occlusion (ABO) in the setting of vertebrobasilar steno-occlusive disease. METHODS: Retrospective analysis of databases of two universitary stroke centers including all consecutive patients from January 2013 until May 2017 undergoing thrombectomy for a) acute stroke due to basilar artery occlusion and either significant basilar artery stenosis or vertebral artery stenosis/occlusion as well as b) presumed embolic basilar artery occlusions...
April 12, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29650059/labyrinthitis-ossificans-in-a-cynomolgus-macaque-macaca-fascicularis
#17
Gayathriy Balamayooran, Hannah M Atkins, Christopher T Whitlow, Samuel T Aycock, Michael A Nader, J Mark Cline, David L Caudell
Labyrinthitis is inflammation of the membranous and bony labyrinth of the inner ear. Typical portals of entry includehematogenous spread from the cochlear vasculature, passage of otitis media pathogens through the round window, and mostcommonly, meningogenic spread from the subarachnoid space. The sequela of chronic inner ear inflammation is labyrinthitisossificans, in which inner ear structures are replaced by fibrous and osseous tissues. Labyrinthitis in humans has been reportedconcurrently with infection due to various viruses (for example, varicella-zoster, measles, mumps) and bacteria (for example,Treponema pallidum, Streptococcus pneumoniae) and may be associated with vertebrobasilar ischemia and meningitis...
April 12, 2018: Comparative Medicine
https://www.readbyqxmd.com/read/29629227/obstructive-hydrocephalus-and-facial-nerve-palsy-secondary-to-vertebrobasilar-dolichoectasia-case-report
#18
Kazim Mohammed, Javeed Iqbal, Hussein Kamel, John Mathew, Ghanem Al-Sulaiti
Background: Symptomatic hydrocephalus due to vertebrobasilar dolichoectasia is a rare occurrence. Case Description: We report a patient who presented with acute confusion and vomiting. Neuroimaging revealed elongated and tortuous basilar artery indenting and elevating the floor of third ventricle causing obstructive hydrocephalus. Initially, the patient was treated with external ventricular drain and then with ventriculo-peritoneal shunt. Conclusion: We suggest prompt surgical intervention upon diagnosis as a first choice of treatment in order to avoid further complications...
2018: Surgical Neurology International
https://www.readbyqxmd.com/read/29628948/clinical-and-imaging-outcomes-of-endovascular-therapy-in-patients-with-acute-large-vessel-occlusion-stroke-and-mild-clinical-symptoms
#19
Meredith T Bowen, Leticia C Rebello, Mehdi Bouslama, Diogo C Haussen, Jonathan A Grossberg, Nicolas A Bianchi, Samir Belagaje, Aaron Anderson, Michael R Frankel, Raul G Nogueira
Background: The minimal stroke severity justifying endovascular intervention remains elusive. However, a significant proportion of patients presenting with large vessel occlusion stroke (LVOS) and mild symptoms go untreated and face poor outcomes. We aimed to evaluate the clinical outcomes of patients presenting with LVOS and low symptom scores (National Institutes of Health Stroke Scale [NIHSS] score ≤8) undergoing endovascular therapy (ET). Methods: We performed a retrospective analysis of a prospectively collected ET database between September 2010 and March 2016...
February 2018: Interventional Neurology
https://www.readbyqxmd.com/read/29600003/endovascular-revascularisation-of-acute-tandem-vertebrobasilar-artery-occlusion-seven-case-series-with-literature-reviews
#20
Haihua Yang, Ning Ma, Shiyong Zhang, Xiaochuan Huo, Feng Gao, Xuan Sun, Dapeng Mo, Zhongrong Miao
Background: The outcome of acute ischaemic stroke due to tandem vertebrobasilar artery occlusion was poor. Endovascular revascularisation may be a positive approach for acute basilar artery occlusion combined with vertebral ostium stenosis or occlusion. We reported seven patients with acute vertebrobasilar tandem occlusion by using angioplasty or stenting for proximal lesion and thrombectomy for distal occlusion. Materials and methods: Consecutive patients with acute tandem vertebrobasilar artery occlusion at two centres were included in this study...
March 2018: Stroke and Vascular Neurology
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