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Anterior cerebral artery

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https://www.readbyqxmd.com/read/28337932/stroke-lesions-in-a-large-upper-limb-rehabilitation-trial-cohort-rarely-match-lesions-in-common-preclinical-models
#1
Matthew A Edwardson, Ximing Wang, Brent Liu, Li Ding, Christianne J Lane, Caron Park, Monica A Nelsen, Theresa A Jones, Steven L Wolf, Carolee J Winstein, Alexander W Dromerick
BACKGROUND: Stroke patients with mild-moderate upper extremity motor impairments and minimal sensory and cognitive deficits provide a useful model to study recovery and improve rehabilitation. Laboratory-based investigators use lesioning techniques for similar goals. OBJECTIVE: To determine whether stroke lesions in an upper extremity rehabilitation trial cohort match lesions from the preclinical stroke recovery models used to drive translational research. METHODS: Clinical neuroimages from 297 participants enrolled in the Interdisciplinary Comprehensive Arm Rehabilitation Evaluation (ICARE) study were reviewed...
January 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28335661/safety-and-efficacy-of-balloon-angioplasty-of-the-anterior-cerebral-artery-for-vasospasm-treatment-after-subarachnoid-hemorrhage
#2
Nauman S Chaudhry, Jennifer L Orning, Sophia F Shakur, Sepideh Amin-Hanjani, Victor A Aletich, Fady T Charbel, Ali Alaraj
Balloon angioplasty is often performed for symptomatic vasospasm following aneurysmal subarachnoid hemorrhage. Angioplasty of the anterior cerebral artery (ACA), however, is perceived to be a challenging endeavor and not routinely performed due to technical and safety concerns. Here, we evaluate the safety and efficacy of balloon angioplasty of the anterior cerebral artery for vasospasm treatment. Patients with vasospasm following subarachnoid hemorrhage who underwent balloon angioplasty at our institution between 2011 and 2016 were retrospectively reviewed...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28330958/intracranial-atherosclerosis-and-dementia-the-atherosclerosis-risk-in-communities-aric-study
#3
Jennifer L Dearborn, Yiyi Zhang, Ye Qiao, Muhammad Fareed K Suri, Li Liu, Rebecca F Gottesman, Andreea M Rawlings, Thomas H Mosley, Alvaro Alonso, David S Knopman, Eliseo Guallar, Bruce A Wasserman
OBJECTIVE: To explore the association of intracranial atherosclerotic disease (ICAD) with mild cognitive impairment (MCI) and dementia. METHODS: From 2011 to 2013, 1,744 participants completed high-resolution vessel wall MRI from the population-based Atherosclerosis Risk in Communities Study by a sampling strategy that allowed weighting back to the cohort. We defined ICAD by plaque features (presence, territory, stenosis, number). Trained clinicians used an algorithm incorporating information from interviews and neuropsychological and neurologic examinations to adjudicate for MCI and dementia...
March 22, 2017: Neurology
https://www.readbyqxmd.com/read/28328739/effects-of-a-brief-cognitive-behavioural-therapy-group-intervention-on-baseline-brain-perfusion-in-adolescents-with-major-depressive-disorder
#4
Zrinka Sosic-Vasic, Birgit Abler, Georg Grön, Paul Plener, Joana Straub
A number of neuroimaging studies have identified altered regional cerebral blood flow (rCBF) related to major depressive disorder (MDD) in adult samples, particularly in the lateral prefrontal, cingular and temporal regions. In contrast, neuroimaging investigations in adolescents with MDD are rare, although investigating young patients during a significant period of brain maturation might offer valuable insights into the neural mechanisms of MDD. We acquired perfusion images obtained with continuous arterial spin labelling in 21 medication-naive adolescents with MDD before and after a five-session cognitive behavioural group therapy (group CBT)...
March 21, 2017: Neuroreport
https://www.readbyqxmd.com/read/28324779/frontocingulate-cerebral-blood-flow-and-cerebrovascular-reactivity-associated-with-antidepressant-response-in-late-life-depression
#5
Margarita Abi Zeid Daou, Brian D Boyd, Manus J Donahue, Kimberly Albert, Warren D Taylor
BACKGROUND: Vascular pathology is common in late-life depression (LLD) and may contribute to alterations in cerebral blood flow (CBF) and cerebrovascular reactivity (CVR). In turn, such hemodynamic deficits may adversely affect brain function and clinical course. The goal of this study was to examine whether altered cerebral hemodynamics in depressed elders predicted antidepressant response. METHODS: 21 depressed elders completed cranial 3T MRI, including a pseudo-continuous Arterial Spin Labeling (pcASL) acquisition on both room air and during a hypercapnia challenge...
March 16, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28320123/relationship-of-the-angle-between-the-a1-and-a2-segments-of-the-anterior-cerebral-artery-with-formation-and-rupture-of-anterior-communicating-artery-aneurysm
#6
Jingya Ye, Peidong Zheng, Muhammad Hassan, Shengnan Jiang, Jiesheng Zheng
PURPOSE: To measure the angle between A1 and A2 segments of the anterior cerebral artery and analyze the relationship of this angle with the formation and rupture of anterior communicating artery aneurysm (ACoAA). METHODS: Patients with ACoAA (n=64) and with non-ACoAA (n=187) randomly chosen were included. The A1-A2 segment angles were measured using multislice spiral computed tomography angiography. The angular dimensions and differences were recorded and compared between the ACoAA and non-ACoAA groups and the ruptured (n=23) and unruptured group (n=41)...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28319240/two-paradigms-for-endovascular-thrombectomy-after-intravenous-thrombolysis-for-acute-ischemic-stroke
#7
Gaspard Gerschenfeld, Ioan-Paul Muresan, Raphael Blanc, Michael Obadia, Marie Abrivard, Michel Piotin, Sonia Alamowitch
Importance: Intravenous thrombolysis (IVT) followed by mechanical thrombectomy (MT) is recommended to treat acute ischemic stroke (AIS) with a large vessel occlusion (LVO). Most hospitals do not have on-site MT facilities, and most patients need to be transferred secondarily after IVT (drip and ship), which may have an effect on the neurologic outcome. Objective: To compare the functional independence at 3 months between patients treated under the drip-and-ship paradigm and those treated on site (mothership)...
March 20, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28304205/stenting-of-the-cervical-internal-carotid-artery-in-acute-stroke-management-the-karolinska-experience
#8
Anastasios Mpotsaris, Christoph Kabbasch, Jan Borggrefe, Vamsi Gontu, Michael Soderman
Background Emergency stent placement in the extracranial internal carotid artery in combination with anterior circulation thrombectomy is a routine procedure. Yet, precise indications and clinical safety in this setting remains controversial. Present data for mechanical thrombectomy include few studies with acute stenting of tandem occlusions. We evaluated the feasibility, safety and clinical outcome of this endovascular treatment in a retrospective analysis of all consecutive cases at a comprehensive stroke centre...
April 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28303205/aneurysm-of-azygos-anterior-cerebral-artery-associated-with-falcine-meningioma-case-report-and-review-of-the-literature
#9
Lucas C Meguins, Raquel C T Hidalgo, Antônio R Spotti, Dionei F de Morais
BACKGROUND: The azygos anterior cerebral artery (ACA) is an uncommon intracranial vascular anomaly of the circle of Willis. Identification of aneurysm from azygos ACA with anterior falcine meningioma is an extremely rare association. The aim of the present study is to report the case of an adult female with a ruptured aneurysm from azygos ACA in association with an anterior falcine meningioma. CASE DESCRIPTION: A 65-year-old female was admitted in the Emergency Department reporting sudden onset of severe headache...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28299225/thrombosis-of-the-azygos-anterior-cerebral-artery
#10
Camila Soares Moreira de Sousa, Carla Lorena Vasques Mendes de Miranda, Marcelo Coelho Avelino, Breno Braga Bastos, Rafael Soares Moreira de Sousa, Carla Valéria Vasques Mendes de Miranda
The azygos anterior cerebral artery is a rare variant, characterized by the absence of the anterior communicating artery and the union of two proximal segments of the anterior cerebral artery, forming a single trunk and ascending through the interhemispheric fissure. The incidence in the population varies from 0.3 to 2%. The presence of occlusion for this vessel causes bifrontal infarcts, with potentially devastating functional consequences, hence the importance of recognizing this anatomical variation in imaging exams...
2017: Case Reports in Radiology
https://www.readbyqxmd.com/read/28297692/-ruptured-aneurysm-of-bihemispheric-anterior-cerebral-artery-a1-a2-junction-a-case-report
#11
Nao Shimooka, Shiromaru Ishida, Masato Kawai
We report a rare case with a ruptured aneurysm of the bihemispheric anterior cerebral artery(ACA), a rare anomaly of the ACA. A 50-year-old female experienced a sudden onset of severe posterior cervical pain. CT revealed diffuse subarachnoid hemorrhage(SAH)and intra cerebral hemorrhage of the left rectal gyrus. Cerebral angiography showed the left bihemispheric ACA and hypoplasia of the right ACA. A saccular aneurysm was indicated at the A1-A2 junction of the left bihemispheric ACA. A neck clipping was performed completely through the right transsylvian approach...
March 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28292867/vessel-patency-at-24-hours-and-its-relationship-with-clinical-outcomes-and-infarct-volume-in-revascat-trial-randomized-trial-of-revascularization-with-solitaire-fr-device-versus-best-medical-therapy-in-the-treatment-of-acute-stroke-due-to-anterior-circulation
#12
Mònica Millán, Sebastià Remollo, Helena Quesada, Arturo Renú, Alejandro Tomasello, Priyanka Minhas, Natalia Pérez de la Ossa, Marta Rubiera, Laura Llull, Pedro Cardona, Fahad Al-Ajlan, María Hernández, Zarina Assis, Andrew M Demchuk, Tudor Jovin, Antoni Dávalos
BACKGROUND AND PURPOSE: Higher rates of target vessel patency at 24 hours were noted in the thrombectomy group compared with control group in recent randomized trials. As a prespecified secondary end point, we aimed to assess 24-hour revascularization rates by treatment groups and occlusion site as they related to clinical outcome and 24-hour infarct volume in REVASCAT (Randomized Trial of Revascularization With Solitaire FR Device Versus Best Medical Therapy in the Treatment of Acute Stroke Due to Anterior Circulation Large Vessel Occlusion Presenting Within Eight Hours of Symptom Onset)...
March 14, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28291217/-early-postoperative-results-of-surgical-treatment-of-patients-with-anterior-clinoidal-meningiomas
#13
S V Chernov, D A Rzaev, A V Kalinovsky, A B Dmitriev, A R Kasymov, A V Zotov, E V Gormolysova, E K Uzhakova
Resection of anterior clinoidal meningiomas is a challenging task due to their localization, frequent involvement of the major cerebral arteries and cranial nerves, a high risk of postoperative neurological deficits, and low radicalness of surgery. AIM: To evaluate the radicalness of microsurgical removal and a neurological deficit in the early postoperative period in patients with anterior clinoidal meningiomas. MATERIAL AND METHODS: A total of 35 patients with anterior clinoidal meningiomas underwent surgery at the Department of Neurooncology of the Novosibirsk Federal Neurosurgical Center in the period from 2013 to July 2016...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28290071/structural-connectivity-in-spatial-attention-network-reconstruction-from-left-hemispatial-neglect
#14
Takaaki Hattori, Kenji Ito, Chika Nakazawa, Yoshiyuki Numasawa, Mayumi Watanabe, Shigeki Aoki, Hidehiro Mizusawa, Sumio Ishiai, Takanori Yokota
Left hemispatial neglect (neglect) is an impaired state of spatial attention. We aimed to reconstruct structural connectivity in the spatial attention network and to identify disconnection patterns underlying neglect. We enrolled 59 right-handed patients who had their first-ever infarction in the right hemisphere and classified them into neglect group (34 patients with neglect) and control group (25 patients without neglect). The neglect group was further subcategorized into 6 subgroups based on infarcted vascular territories...
March 13, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/28284449/cerebral-vasospasm-after-transsphenoidal-surgery-for-pituitary-adenoma-case-report-and-review-of-the-literature
#15
N Bougaci, P Paquis
INTRODUCTION: Cerebral vasospasm (CVS) is a rare complication of transsphenoidal surgery for pituitary adenomas. CASE REPORT: The authors describe a symptomatic cerebral ischemia due to an internal carotid, left middle cerebral artery and anterior cerebral artery vasospasm in a patient undergoing transsphenoidal surgery for a pituitary macro adenoma. The patient was successfully treated by an endovascular balloon angioplasty. CONCLUSION: This issue should be taken into account, even when rare, in every patient who has surgery for a pituitary tumor, particularly when it concerns a large macro adenoma with suprasellar extension...
March 8, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28282456/early-computed-tomography-based-scores-to-predict-decompressive-hemicraniectomy-after-endovascular-therapy-in-acute-ischemic-stroke
#16
Ilko L Maier, Daniel Behme, Marlena Schnieder, Ioannis Tsogkas, Katharina Schregel, Mathias Bähr, Michael Knauth, Jan Liman, Marios-Nikos Psychogios
BACKGROUND: Identification of patients requiring decompressive hemicraniectomy (DH) after endovascular therapy (EVT) is crucial as clinical signs are not reliable and early DH has been shown to improve clinical outcome. The aim of our study was to identify imaging-based scores to predict the risk for space occupying ischemic stroke and DH. METHODS: Prospectively derived data from patients with acute large artery occlusion within the anterior circulation and EVT was analyzed in this monocentric study...
2017: PloS One
https://www.readbyqxmd.com/read/28281383/meandering-flow-void-around-the-splenium-in-moyamoya-disease
#17
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/28281190/ruptured-dissecting-aneurysms-of-the-a1-segment-of-the-anterior-cerebral-artery-three-case-reports-and-a-review-of-the-literature
#18
REVIEW
Takafumi Mitsuhara, Fusao Ikawa, Toshikazu Hidaka, Yasuharu Kurokawa, Ushio Yonezawa
Dissecting aneurysms in the anterior cerebral artery (ACA), although rare, can cause ischemic and/or hemorrhagic stroke. Hemorrhagic dissecting aneurysms in the A1 portion of the ACA are often associated with a poor prognosis. We retrospectively investigated three rare cases of hemorrhagic dissecting aneurysms in the A1 portion. Dissecting aneurysms were diagnosed by carotid angiography or computed tomography angiography to visualize morphological changes in the vessel. All patients presented with diffuse subarachnoid hemorrhage...
March 10, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28277554/morphological-changes-of-anterior-cerebral-artery-aca-in-hydrocephalic-pediatric-patients
#19
Sait Ozturk, Erdogan Ayan, Metin Kaplan
OBJECTIVE: The morphology of anterior cerebral artery (ACA) in patients with hydrocephalus (HCP) was analyzed, and its importance was discussed in maintaining cerebral perfusion. MATERIALS & METHODS: A total of 84 cases in 2 groups between 0 and 3 months, followed-up at Firat Universitesi Hastanesi, Beyin Cerrahisi Klinigi, Elazig, Turkiye due to in 2010-2013, were enrolled. Two groups were created for the study. Group 1; patients with HCP and Group 2; as control group without HCP...
2017: Iranian Journal of Child Neurology
https://www.readbyqxmd.com/read/28276529/the-contrast-enhancement-of-intracranial-arterial-wall-on-high-resolution-mri-and-its-clinical-relevance-in-patients-with-moyamoya-vasculopathy
#20
Maoxue Wang, Yongbo Yang, Fei Zhou, Ming Li, Renyuan Liu, Maobin Guan, Rui Li, Le He, Yun Xu, Bing Zhang, Bin Zhu, Xihai Zhao
The purpose of this study is to investigate the characteristics of intracranial vessel wall enhancement and its relationship with ischemic infarction in patients with Moyamoya vasculopathy (MMV). Forty-seven patients with MMV confirmed by angiography were enrolled in this study. The vessel wall enhancement of the distal internal carotid artery, anterior cerebral artery and middle cerebral artery was classified into eccentric and concentric patterns, as well as divided into three grades: grade 0, grade 1 and grade 2...
March 9, 2017: Scientific Reports
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