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arterial territories brain

Wenxian Li, Youzhen Feng, Weibiao Lu, Xie Xie, Zhilin Xiong, Zhen Jing, Xiangran Cai, Li'an Huang
PURPOSE: To determine the morphological changes of intracranial arteries and whole-brain perfusion in undetermined isolated vertigo (UIV) patients using 320-detector row computed tomography (CT). METHODS: A total of 150 patients who underwent CT angiography (CTA) and CT perfusion (CTP) imaging were divided into UIV group and benign paroxysmal positional vertigo (BPPV) group. Sixty individuals with sex- and age-matched without vertigo and cerebral diseases served as the control...
November 15, 2016: Journal of the Neurological Sciences
Sami Al Kasab, Michael J Lynn, Tanya N Turan, Colin P Derdeyn, David Fiorella, Bethany F Lane, L Scott Janis, Marc I Chimowitz
BACKGROUND: An American Heart Association/American Stroke Association (AHA/ASA) writing committee has recently recommended that tissue evidence of cerebral infarction associated with temporary symptoms (CITS) lasting <24 hours should be considered a stroke. We analyzed the impact of considering CITS as equivalent to stroke on the results of the Stenting and Aggressive Medical Management for Preventing Recurrent Stroke in Intracranial Stenosis (SAMMPRIS) trial. METHODS: We compared outcomes in the medical (n = 227) and stenting (n = 224) groups in SAMMPRIS using the following primary end point (new components in bold): any stroke, CITS, or death within 30 days after enrollment or within 30 days after a revascularization procedure for the qualifying lesion during follow-up; or ischemic stroke or CITS in the territory of the qualifying artery beyond 30 days...
October 17, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
Iris Asllani, Pamelia Slattery, Alexander Fafard, Marykay Pavol, Ronald M Lazar, Randolph S Marshall
Despite being considered an important anatomical parameter directly related to neuronal density, cortical thickness is not routinely assessed in studies of the human brain in vivo. This paucity has been largely due to the size and convoluted shape of the human cortex, which has made it difficult to develop automated algorithms that can measure cortical thickness efficiently and reliably. Since the development of such an algorithm by Fischl and Dale in 2000, the number of studies investigating the relationship between cortical thickness and other physiological parameters in the brain has been on the rise...
2016: NeuroImage: Clinical
Giancarlo Nicosia, Domenico Cicala, Giuseppe Mirone, Pietro Spennato, Vincenzo Trischitta, Claudio Ruggiero, Gianluigi Guarneri, Mario Muto, Giuseppe Cinalli
INTRODUCTION: Acute basilar artery occlusion (ABAO) is an infrequent but potentially fatal cause of strokes in both adults and children, and it is usually due to vertebral artery dissection (VAD). VAD has been found to be usually a consequence of traumatic vertebral artery injury. ABAO usually presents with symptoms of acute ischemic stroke (AIS) of the posterior circulation or transient ischemic attack (TIA). It may lead to death or long-term disability if not promptly recanalized. Basilar artery recanalization in children can be achieved safely and with excellent clinical outcome using endovascular thrombectomy with the new generation self-expanding and retrievable stents...
October 4, 2016: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
Peiying Liu, Babu G Welch, Yang Li, Hong Gu, Darlene King, Yihong Yang, Marco Pinho, Hanzhang Lu
Diagnosis and treatment monitoring of cerebrovascular diseases routinely require hemodynamic imaging of the brain. Current methods either only provide part of the desired information or require the injection of multiple exogenous agents. In this study, we developed a multiparametric imaging scheme for the imaging of brain hemodynamics and function using gas-inhalation MRI. The proposed technique uses a single MRI scan to provide simultaneous measurements of baseline venous cerebral blood volume (vCBV), cerebrovascular reactivity (CVR), bolus arrival time (BAT), and resting-state functional connectivity (fcMRI)...
September 28, 2016: NeuroImage
Piotr Walczak, Joanna Wojtkiewicz, Adam Nowakowski, Aleksandra Habich, Piotr Holak, Jiadi Xu, Zbigniew Adamiak, Moussa Chehade, Monica S Pearl, Philippe Gailloud, Barbara Lukomska, Wojciech Maksymowicz, Jeff Wm Bulte, Miroslaw Janowski
Stem cell therapy for neurological disorders reached a pivotal point when the efficacy of several cell types was demonstrated in small animal models. Translation of stem cell therapy is contingent upon overcoming the challenge of effective cell delivery to the human brain, which has a volume ∼1000 times larger than that of the mouse. Intra-arterial injection can achieve a broad, global, but also on-demand spatially targeted biodistribution; however, its utility has been limited by unpredictable cell destination and homing as dictated by the vascular territory, as well as by safety concerns...
September 12, 2016: Journal of Cerebral Blood Flow and Metabolism
Philippe Garrigue, Guillaume Hache, Youssef Bennis, Pauline Brige, Jimmy Stalin, Lionel Pellegrini, Lionel Velly, Francesca Orlandi, Elena Castaldi, Françoise Dignat-George, Florence Sabatier, Benjamin Guillet
BACKGROUND: endothelial colony-forming cells (ECFCs) are promising candidates for cell therapy of ischemic diseases, as less than 10% of patients suffering from an ischemic stroke are eligible for thrombolysis. We previously reported that erythropoietin priming of ECFCs increased their in vitro and in vivo angiogenic properties in mice with hind limb ischemia. OBJECTIVE: the present study aimed to evaluate whether priming of ECFCs with erythropoietin could enhance their homing into the ischemic site after transient middle cerebral artery occlusion (MCAO) followed by reperfusion in rats and potentiate their protective or regenerative effects on brain-blood barrier disruption (BBBd), cerebral apoptosis and cerebral blood flow (CBF) by Single Photon Emission/Computed Tomography (SPECT/CT) imaging...
September 8, 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
Bo-Ram Kim, Won-Jin Moon, Hyuntae Kim, Eunhwa Jung, Jongmin Lee
OBJECTIVE: To determine the supratentorial area associated with poststroke dysphagia, we assessed the diffusion tensor images (DTI) in subacute stroke patients with supratentorial lesions. METHODS: We included 31 patients with a first episode of infarction in the middle cerebral artery territory. Each subject underwent brain DTI as well as a videofluoroscopic swallowing study (VFSS) and patients divided were into the dysphagia and non-dysphagia groups. Clinical dysphagia scale (CDS) scores were compared between the two groups...
August 2016: Annals of Rehabilitation Medicine
Maria Domercq, Boguslaw Szczupak, Jon Gejo, Vanessa Gómez-Vallejo, Daniel Padro, Kiran Babu Gona, Frédéric Dollé, Makoto Higuchi, Carlos Matute, Jordi Llop, Abraham Martín
In vivo Positron Emission Tomography (PET) imaging of the cystine-glutamate antiporter (system xc(-)) activity with [(18)F]FSPG is meant to be an attractive tool for the diagnosis and therapy evaluation of brain diseases. However, the role of system xc(-) in cerebral ischemia and its involvement in inflammatory reaction has been scarcely explored. In this work, we report the longitudinal investigation of the neuroinflammatory process following transient middle cerebral artery occlusion (MCAO) in rats using PET with [(18)F]FSPG and the translocator protein (TSPO) ligand [(18)F]DPA-714...
2016: Theranostics
Motohiro Nomura, Akira Tamase, Tomoya Kamide, Kentaro Mori, Syunsuke Seki, Yu Iida, Kei-Ichiro Suzuki, Takae Aoki, Ken-Ichi Hirano, Mitsuyuki Takahashi, Yuichi Kawabata, Tatsu Nakano, Hiroki Taguchi
We report a patient with a traumatic middle cerebral artery dissection, which showed hyperperfusion in the territory supplied by the left middle cerebral artery. A 45-year-old man experienced speech disturbance and motor weakness in his right hemibody on the day following mild head trauma. His symptoms worsened on the fourth day. Magnetic resonance imaging showed narrowing in the left M1 portion of the middle cerebral artery. Angiography showed narrowing and dilatation in the left middle cerebral artery trunk...
October 2016: Neuroradiology Journal
Ashish Kulhari, Ashley Rogers, Han Wang, Vishakhadatta Mathur Kumaraswamy, Wei Xiong, Michael DeGeorgia
BACKGROUND: Despite the common occurrence of hymenopteran stings worldwide, primary neurologic manifestations including stroke are rare. We report a case of a healthy male who developed a right middle cerebral artery (MCA) territory ischemic stroke after getting stung by a wasp. CASE REPORT: A 44-year-old man with hypertension presented to the hospital with sudden-onset left hemiparesis, left facial weakness, and dysarthria after being stung by a wasp. Magnetic resonance imaging (MRI) and magnetic resonance angiography (MRA) scans of the brain revealed a right MCA territory infarct and a lack of flow in the distal right internal carotid artery and MCA...
October 2016: Journal of Emergency Medicine
M Al-Obaidi, D Saunders, S Brown, L Ramsden, N Martin, E Moraitis, C A Pilkington, P A Brogan, D Eleftheriou
The aim of this study was to describe the abnormalities identified with conventional MRI in children with neuropsychiatric systemic lupus erythematosus (NPSLE). This was single-centre (Great Ormond Street Hospital, London) retrospective case series of patients with juvenile NPSLE seen in 2003-2013. Brain MR images of the first episode of active NPSLE were reviewed. All patients fulfilled the 1999 ACR case definitions for NPSLE syndromes. Presenting neuropsychiatric manifestations, immunological findings and treatment are reported...
October 2016: Clinical Rheumatology
Stefan Donath, Junfeng An, Sabrina Lin Lin Lee, Karen Gertz, Anna Lena Datwyler, Ulrike Harms, Susanne Müller, Tracy Deanne Farr, Martina Füchtemeier, Gisela Lättig-Tünnemann, Janet Lips, Marco Foddis, Larissa Mosch, René Bernard, Ulrike Grittner, Mustafa Balkaya, Golo Kronenberg, Ulrich Dirnagl, Matthias Endres, Christoph Harms
UNLABELLED: The aim of this study was to explore the signaling and neuroprotective effect of transactivator of transcription (TAT) protein transduction of the apoptosis repressor with CARD (ARC) in in vitro and in vivo models of cerebral ischemia in mice. In mice, transient focal cerebral ischemia reduced endogenous ARC protein in neurons in the ischemic striatum at early reperfusion time points, and in primary neuronal cultures, RNA interference resulted in greater neuronal susceptibility to oxygen glucose deprivation (OGD)...
August 3, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
Nolan S Hartkamp, J Hendrikse, Laurens J L De Cocker, Gert Jan de Borst, L Jaap Kappelle, Reinoud P H Bokkers
PURPOSE: Cerebral perfusion territories are known to vary widely among individuals. This may lead to misinterpretation of the symptomatic artery in patients with ischaemic stroke to a wrong assumption of the underlying aetiology being thromboembolic or hypoperfusion. The aim of the present study was to investigate such potential misinterpretation with territorial arterial spin labelling (T-ASL) by correlating infarct location with imaging of the perfusion territory of the carotid arteries or basilar artery...
October 2016: Journal of Neurology, Neurosurgery, and Psychiatry
L A Kalashnikova, M V Dreval', L A Dobrynina, M V Krotenkova
Authors describe a 7-year-old boy, who developed a severe right-sided hemiparesis, aphasia, seizure, and confusion state during sport games. There was no headache. Allergic dermatitis in the past medical history and influenza vaccination 2 weeks before stroke were recorded. On the 12th day of disease, MRI of the brain revealed an acute infarction in the territory of left anterior and middle cerebral arteries with hemorrhagic transformation. MPA (15 day) showed occlusion of the left ACA and MCA. HR-MRI T1_db_fs weighted imaging (36 day) found intramural hematoma (IMH) in ACA and MCA with marked stenosis of the lumen...
2016: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
Bardia Moosavi, Carlos Torres, Gerard Jansen
History A 78-year-old woman presented to a community hospital after an unwitnessed fall at her nursing home. Initial head computed tomography (CT) performed in the emergency department showed vasogenic edema in the right temporal parietal region, which prompted her transfer to our institution for additional work-up. Further history taking revealed recurrent transient motor and sensory transient ischemic attack-like symptoms over the preceding weeks. She denied having a fever or night sweats. There was no history of infection, bleeding, immunodeficiency, intravenous drug use, alcohol or tobacco abuse, malignancy, or genetic disorders...
August 2016: Radiology
Paola Caruso, Marcello Naccarato, Valentina Faoro, Danae Pracella, Marta Borando, Isabella Dotti, Nadia Koscica, Giorgio Stanta, Gilberto Pizzolato, Paolo Manganotti
OBJECTIVE: Stroke is one of the leading causes of disability and death in the world. The endocannabinoid (eCB) system is upregulated in several neurological diseases including stroke. A previous animal study demonstrated an increased expression of the endocannabinoid receptor 1 (CB1R) in the penumbra area surrounding the ischemic core, suggesting a crucial role in inflammation/reperfusion after stroke. Regarding the localization of CB1/CB2 receptors, animal studies showed that cortical neurons, activated microglia, and astroglia are involved...
September 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
Jing Li, Xue-Wei Zhang, Zhen-Tao Zuo, Jie Lu, Chun-Ling Meng, Hong-Ying Fang, Rong Xue, Yong Fan, Yu-Zhou Guan, Wei-Hong Zhang
AIMS: Our study aimed to figure out brain functional reorganization evidence after repetitive transcranial magnetic stimulation (rTMS) using the resting-state functional magnetic resonance imaging (rsfMRI). METHODS: Twelve patients with unilateral subcortex lesion in the middle cerebral artery territory were recruited. Seven of them received a 10-day rTMS treatment beginning at about 5 days after stroke onset. The remaining five received sham treatment. RsfMRI and motor functional scores were obtained before and after rTMS or sham rTMS...
July 15, 2016: CNS Neuroscience & Therapeutics
Debarpan Guhathakurta, Anirban Dutta
Transcranial direct current stimulation (tDCS) modulates cortical neural activity and hemodynamics. Electrophysiological methods (electroencephalography-EEG) measure neural activity while optical methods (near-infrared spectroscopy-NIRS) measure hemodynamics coupled through neurovascular coupling (NVC). Assessment of NVC requires development of NIRS-EEG joint-imaging sensor montages that are sensitive to the tDCS affected brain areas. In this methods paper, we present a software pipeline incorporating freely available software tools that can be used to target vascular territories with tDCS and develop a NIRS-EEG probe for joint imaging of tDCS-evoked responses...
2016: Frontiers in Neuroscience
Jun Ho Kang, Kyung Hye Park, Jung Soo Park
Autologous fat injection is a common procedure used for skin augmentation. Although it is believed to be a safe and simple procedure, severe complications have been reported sometimes. The authors experienced the patient with acute large cerebral infarction including the territories of the anterior and middle cerebral arteries and optic nerve infarction developing after autologous fat transplantation. A 32-year-old woman was referred to the emergency room of our hospital due to sudden stupor. Thirty minutes earlier, she was undergoing cosmetic autologous fat injection into the glabella area by a plastic surgeon at private clinic...
June 28, 2016: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
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