keyword
MENU ▼
Read by QxMD icon Read
search

Occipital

keyword
https://www.readbyqxmd.com/read/29346229/anatomical-variations-of-the-vertebral-artery-in-the-upper-cervical-spine-clinical-relevance-for-procedures-targeting-the-c1-c2-and-c2-c3-joints
#1
Maria Francisca Elgueta, Johanna Ortiz Jimenez, Nina Nan Wang, Almudena Pérez Lara, Jeffrey Chankowsky, Roshanak Charghi, De Q Tran, Roderick J Finlayson
BACKGROUND AND OBJECTIVES: Accidental breach of the vertebral artery (VA) during the performance of cervical pain blocks can result in significant morbidity. Whereas anatomical variations have been described for the foraminal (V2) segment of the VA, those involving its V3 portion (between the C2 transverse process and dura) have not been investigated and may be of importance for procedures targeting the third occipital nerve or the lateral atlantoaxial joint. METHODS: Five hundred computed tomography angiograms of the neck performed in patients older than 50 years for the management of cerebrovascular accident or cervical trauma (between January 2010 and May 2016) were retrospectively and independently reviewed by 2 neuroradiologists...
January 16, 2018: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29345415/investigating-complications-associated-with-occipital-nerve-stimulation-a-maude-study
#2
REVIEW
Joseph Doran, Max Ward, Brittany Ward, Boris Paskhover, Michael Umanoff, Antonios Mammis
OBJECTIVES: The objectives of this study are to utilize the MAUDE data base to enhance our understanding of the complication profile for Occipital Nerve Stimulation, a therapy for which the current level of evidence is limited. Additionally, it is our objective to describe a systematic approach to processing the MAUDE data, which addresses its flaws and enhances its utility. METHODS: From the FDA website, we accessed adverse events reports from the MAUDE data base for devices used in Occipital Nerve Stimulation between June 30, 2007 and June 30, 2017...
January 18, 2018: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/29344999/the-newer-classifications-of-the-chiari-malformations-with-clarifications-an-anatomical-review
#3
Fatima Azahraa Haddad, Ibraheem Qaisi, Nagham Joudeh, Hamada Dajani, Fareed Jumah, Amjad Elmashala, Nimer Adeeb, Joshua J Chern, R Shane Tubbs
In 1891 Hans Chiari described a group of congenital hindbrain anomalies, which were eventually named after him. He classified these malformations into three types (Chiari malformations I, II, and III), and four years later added the Chiari IV malformation. However, numerous reports across the literature do not seem to fit Chiari's original descriptions of these malformations, so researchers have been encouraged to propose new classifications to encompass these variants (e.g., Chiari 0, Chiari1.5, and Chiari 3...
January 18, 2018: Clinical Anatomy
https://www.readbyqxmd.com/read/29344928/morphine-mediated-brain-region-specific-astrocytosis-involves-the-er-stress-autophagy-axis
#4
Susmita Sil, Palsamy Periyasamy, Ming-Lei Guo, Shannon Callen, Shilpa Buch
A recent study from our lab has revealed a link between morphine-mediated autophagy and synaptic impairment. The current study was aimed at investigating whether morphine-mediated activation of astrocytes involved the ER stress/autophagy axis. Our in vitro findings demonstrated upregulation of GFAP indicating astrocyte activation with a concomitant increase in the production of proinflammatory cytokines in morphine-exposed human astrocytes. Using both pharmacological and gene-silencing approaches, it was demonstrated that morphine-mediated defective autophagy involved upstream activation of ER stress with subsequent downstream astrocyte activation via the μ-opioid receptor (MOR)...
January 17, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29344423/age-related-gray-and-white-matter-changes-in-normal-adult-brains
#5
Farnaz Farokhian, Chunlan Yang, Iman Beheshti, Hiroshi Matsuda, Shuicai Wu
Normal aging is associated with both structural changes in many brain regions and functional declines in several cognitive domains with advancing age. Advanced neuroimaging techniques enable explorative analyses of structural alterations that can be used as assessments of such age-related changes. Here we used voxel-based morphometry (VBM) to investigate regional and global brain volume differences among four groups of healthy adults from the IXI Dataset: older females (OF, mean age 68.35 yrs; n=69), older males (OM, 68...
December 2017: Aging and Disease
https://www.readbyqxmd.com/read/29343978/parietal-scalp-is-another-affected-area-in-female-pattern-hair-loss-an-analysis-of-hair-density-and-hair-diameter
#6
Salinee Rojhirunsakool, Poonkiat Suchonwanit
Purpose: Female pattern hair loss (FPHL) is a common hair disease. However, studies of the quantitative measurement of FPHL are still limited. The aim of this study was to investigate the characteristics of hair density and hair diameter in normal women and FPHL patients, and further correlate the quantitative measurement with the clinical presentation of FPHL. Patients and methods: An evaluation of 471 FPHL patients and 236 normal women was carried out according to the Ludwig classification, and analysis was performed by using a com-puterized handheld USB camera with computer-assisted software...
2018: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/29343808/stereotactic-topography-of-the-greater-and-third-occipital-nerves-and-its-clinical-implication
#7
Hong-San Kim, Kang-Jae Shin, Jehoon O, Hyun-Jin Kwon, Minho Lee, Hun-Mu Yang
This study aimed to provide topographic information of the greater occipital (GON) and third occipital (3ON) nerves, with the three-dimensional locations of their emerging points on the back muscles (60 sides, 30 cadavers) and their spatial relationship with muscle layers, using a 3D digitizer (Microscribe G2X, Immersion Corp, San Jose CA, USA). With reference to the external occipital protuberance (EOP), GON pierced the trapezius at a point 22.6 ± 7.4 mm lateral and 16.3 ± 5.9 mm inferior and the semispinalis capitis (SSC) at a point 13...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29341120/trajectories-of-infants-biobehavioral-development-timing-and-rate-of-a-not-b-performance-gains-and-eeg-maturation
#8
Leigha A MacNeill, Nilam Ram, Martha Ann Bell, Nathan A Fox, Koraly Pérez-Edgar
This study examined how timing (i.e., relative maturity) and rate (i.e., how quickly infants attain proficiency) of A-not-B performance were related to changes in brain activity from age 6 to 12 months. A-not-B performance and resting EEG (electroencephalography) were measured monthly from age 6 to 12 months in 28 infants and were modeled using logistic and linear growth curve models. Infants with faster performance rates reached performance milestones earlier. Infants with faster rates of increase in A-not-B performance had lower occipital power at 6 months and greater linear increases in occipital power...
January 17, 2018: Child Development
https://www.readbyqxmd.com/read/29340791/treatment-of-disabling-headache-with-greater-occipital-nerve-injections-in-a-large-population-of-childhood-and-adolescent-patients-a-service-evaluation
#9
Francesca Puledda, Peter J Goadsby, Prab Prabhakar
BACKGROUND: Pediatric headache disorders can be extremely disabling, with marked reduction in the quality of life of children and their carers. Evidenced-based options for the treatment of primary headache disorders with preventive medication is limited and clinical outcomes are often unsatisfactory. Greater occipital nerve injections represent a rapid and well-tolerated therapeutic option, which is widely used in clinical practice in adults, and has previously shown a good outcome in a pediatric population...
January 16, 2018: Journal of Headache and Pain
https://www.readbyqxmd.com/read/29339964/cerebral-venous-thrombosis-with-papilloedema-secondary-to-skull-base-plasmacytoma
#10
Peter W MacIntosh, Amy Y Lin, Jin Suh Kim, Fernando D Testai, Heather E Moss
A 60-year-old woman with history of multiple myeloma was in remission after stem cell transplant 6 years prior. She was undergoing work-up for headaches that were thought to be secondary to a right mastoiditis seen on magnetic resonance imaging (MRI). On routine eye exam, papilloedema was noted. A lumbar puncture was performed, with elevated opening pressure with normal constituents. She was an atypical age for idiopathic intracranial hypertension, and her mastoiditis raised concern for secondary cerebral venous sinus thrombosis...
October 2017: Neuro-ophthalmology
https://www.readbyqxmd.com/read/29338905/posterior-reversible-encephalopathy-syndrome-a-rare-childhood-case-with-unconsciousness
#11
Akira Komori, Daisuke Mizu, Koichi Ariyoshi
BACKGROUND: Posterior reversible encephalopathy syndrome (PRES) is a condition characterized by seizures, altered consciousness, visual disturbances, and headache. Characteristic findings on neuroimaging include cerebral edema, typically involving the parieto-occipital white matter. PRES has been associated with hypertension, autoimmune disease, and Henoch-Schölein purpura (HSP), but few cases have been reported, and fewer cases of PRES have been reported in children. CASE REPORT: We report the case of a 4-year-old girl who presented with blindness and semi-consciousness...
January 12, 2018: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29338891/gray-and-white-matter-changes-and-their-relation-to-illness-trajectory-in-first-episode-psychosis
#12
Alejandro Keymer-Gausset, Anna Alonso-Solís, Iluminada Corripio, Rosa B Sauras-Quetcuti, Edith Pomarol-Clotet, Erick J Canales-Rodriguez, Eva Grasa-Bello, Enric Álvarez, Maria J Portella
Previous works have studied structural brain characteristics in first-episode psychosis (FEP), but few have focused on the relation between brain differences and illness trajectories. The aim of this study is to analyze gray and white matter changes in FEP patients and their relation with one-year clinical outcomes. A sample of 41 FEP patients and 41 healthy controls (HC), matched by age and educational level was scanned with a 3T MRI during the first month of illness onset. One year later, patients were assigned to two illness trajectories (schizophrenia and non-schizophrenia)...
January 12, 2018: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29338838/neuronal-populations-in-the-occipital-cortex-of-the-blind-synchronize-to-the-temporal-dynamics-of-speech
#13
Markus Johannes Van Ackeren, Francesca M Barbero, Stefania Mattioni, Roberto Bottini, Olivier Collignon
The occipital cortex of early blind individuals (EB) activates during speech processing, challenging the notion of a hard-wired neurobiology of language. But, at what stage of speech processing do occipital regions participate in EB? Here we demonstrate that parieto-occipital regions in EB enhance their synchronization to acoustic fluctuations in human speech in the theta-range (corresponding to syllabic rate), irrespective of speech intelligibility. Crucially, enhanced synchronization to the intelligibility of speech was selectively observed in primary visual cortex in EB, suggesting that this region is at the interface between speech perception and comprehension...
January 17, 2018: ELife
https://www.readbyqxmd.com/read/29338547/neuroimaging-meta-analysis-of-cannabis-use-studies-reveals-convergent-functional-alterations-in-brain-regions-supporting-cognitive-control-and-reward-processing
#14
Julio A Yanes, Michael C Riedel, Kimberly L Ray, Anna E Kirkland, Ryan T Bird, Emily R Boeving, Meredith A Reid, Raul Gonzalez, Jennifer L Robinson, Angela R Laird, Matthew T Sutherland
Lagging behind rapid changes to state laws, societal views, and medical practice is the scientific investigation of cannabis's impact on the human brain. While several brain imaging studies have contributed important insight into neurobiological alterations linked with cannabis use, our understanding remains limited. Here, we sought to delineate those brain regions that consistently demonstrate functional alterations among cannabis users versus non-users across neuroimaging studies using the activation likelihood estimation meta-analysis framework...
January 1, 2018: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/29338280/variable-skeletal-anatomical-features-of-acromegaly-in-the-skull-and-craniocervical-junction
#15
Maria Piagkou, Othon Manolakos, Theodore Troupis, Nikolaos Lazaridis, Konstantinos Laios, Alexandros Samolis, Konstantinos Natsis
OBJECTIVE: This study adds important information regarding the morphological alterations caused by growth hormone hypersecretion in the skull and craniocervical junction (CCJ). A variably asymmetric skull due to acromegaly coexists with expansion of the paranasal sinuses and multiple Wormian bones. CASE REPORT: A pathologically asymmetric dry skull of a European male, aged 38 years at death, with cranial vault and skull base thickening is described. The extensive paranasal sinus pneumatization caused a generalized thinning of the bony walls...
November 2017: Acta Medica Academica
https://www.readbyqxmd.com/read/29337005/walker-warburg-syndrome-and-tectocerebellar-dysraphia-a-novel-association-caused-by-a-homozygous-dag1-mutation
#16
Zvi Leibovitz, Hanna Mandel, Tzipora C Falik-Zaccai, Shani Ben Harouch, David Savitzki, Karina Krajden-Haratz, Liat Gindes, Mordechai Tamarkin, Dorit Lev, William B Dobyns, Tally Lerman-Sagie
OBJECTIVES: To elaborate the imaging phenotype associated with a homozygous c.743C > del frameshift mutation in DAG1 leading to complete absence of both α- and β-dystroglycan previously reported in a consanguineous Israeli-Arab family. METHODS: We analyzed prenatal and postnatal imaging data of patients from a consanguineous Israeli-Arab kindred harboring the DAG1 mutation. RESULTS: The imaging studies (fetal ultrasound, CT scan and postnatal MRI) demonstrated: flat cortex (abnormally thick with irregular pebbled cortical-white matter border on MRI), hydrocephalus, scattered small periventricular heterotopia and subependymal hemorrhages and calcifications, z-shaped brainstem, and in addition an occipital encephalocele, vermian agenesis, and an elongated and thick tectum (tectocerebellar dysraphia)...
December 26, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/29335889/comparison-of-gray-matter-volume-between-migraine-and-strict-criteria-tension-type-headache
#17
Wei-Ta Chen, Kun-Hsien Chou, Pei-Lin Lee, Fu-Jung Hsiao, David M Niddam, Kuan-Lin Lai, Jong-Ling Fuh, Ching-Po Lin, Shuu-Jiun Wang
BACKGROUND: Despite evidently distinct symptoms, tension-type headache (TTH) and migraine are highly comorbid and exhibit many similarities in clinical practice. The purpose of this study was to investigate whether both types of headaches are similar in brain morphology. METHODS: Consecutive patients with TTH and age- and sex-matched patients with migraine and healthy controls were enrolled for brain magnetic resonance imaging examination. Patients with TTH were excluded if they reported any headache features or associated symptoms of migraine...
January 15, 2018: Journal of Headache and Pain
https://www.readbyqxmd.com/read/29335082/-a-comparative-analysis-of-anti-n-methyl-d-aspartate-receptor-encephalitis-with-or-without-abnormal-findings-on-cranial-magnetic-resonance-imaging
#18
Jian-Zhao Zhang, Qian Chen, Ping Zheng, Li-Na Xie, Xiao-Li Yi, Hai-Tao Ren, Jian Yang
OBJECTIVE: To investigate the clinical features of children with anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis with normal or abnormal cranial magnetic resonance imaging (MRI) findings via a comparative analysis. METHODS: A retrospective analysis was performed for the clinical data of 33 children with anti-NMDAR encephalitis. The clinical features and prognosis were compared between the children with normal and abnormal cranial MRI findings. RESULTS: In the 33 children with anti-NMDAR encephalitis, the most common initial symptoms were seizures (61%) and involuntary movement (61%), followed by language disorder (54%), mental and behavioral abnormalities (52%), and disturbance of consciousness (30%)...
January 2018: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29334684/aberrant-connectivity-in-mild-cognitive-impairment-and-alzheimer-disease-revealed-by-multimodal-neuroimaging-data
#19
Qing Li, Xia Wu, Fufang Xie, Kewei Chen, Li Yao, Jiacai Zhang, Xiaojuan Guo, Rui Li
BACKGROUND: Making use of multimodal data simultaneously to understand the neural mechanism of mild cognitive impairment (MCI) has been in the focus nowadays. The simultaneous use of multimodal data can take advantage of each modality which may only provide the view of one specific aspect of the brain. OBJECTIVE: To this end, the present study used structural magnetic resonance imaging (sMRI), fluorodeoxyglucose positron emission tomography (FDG-PET) and florbetapir PET to reveal the integrated brain network between MCI and normal controls (NCs)...
January 13, 2018: Neuro-degenerative Diseases
https://www.readbyqxmd.com/read/29334141/characterization-of-macromolecular-baseline-of-human-brain-using-metabolite-cycled-semi-laser-at-9-4t
#20
Ioannis-Angelos Giapitzakis, Nikolai Avdievich, Anke Henning
PURPOSE: Macromolecular resonances (MM) arise mainly from cytosolic proteins and overlap with metabolites, influencing metabolite quantification. Macromolecules can serve as valuable biomarkers for diseases and pathologies. The objectives of this study were to characterize MM at 9.4T in the human brain (occipital and left parietal lobe) and to describe the RF coil setup used for MM acquisition in the two regions. METHODS: An adiabatic inversion pulse was optimised for metabolite nulling at 9...
January 15, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
keyword
keyword
7090
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"