keyword
MENU ▼
Read by QxMD icon Read
search

Occipital

keyword
https://www.readbyqxmd.com/read/27920873/migratory-stroke-like-lesions-in-a-case-of-adult-onset-mitochondrial-encephalomyopathy-lactic-acidosis-and-stroke-like-episodes-melas-syndrome-and-a-review-of-imaging-findings
#1
Stephen S Cai, Rainer von Coelln, Theresa J Kouo
Imaging findings of adult-onset mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes (MELAS) syndrome is poorly documented. The authors present a 48-year-old woman with subacute onset of word-finding difficulties and right arm stiffness. Magnetic resonance imaging performed 2 weeks prior revealed left temporal lobe diffusion and fluid-attenuated inversion recovery hyperintensity predominantly involving the cortex. The apparent diffusion coefficient map showed preserved signal in the temporal cortex...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27919561/occipital-bone-thickness-implications-on-occipital-cervical-fusion-a-cadaveric-study
#2
Kourosh Zarghooni, Chrisoph K Boese, Jan Siewe, Marc Röllinghoff, Peer Eysel, Max J Scheyerer
OBJECTIVE: The aim of this study was to create a map of the occipital bone using a cadaveric morphometric analysis. MATERIAL: Twelve heads, from seven male and five female cadavers, were studied. The thickness of the occipital bone was measured with a digital vernier caliper within a coordinate system. RESULTS: The maximum thickness of the occipital bone could be measured at the external occipital protuberance (mean 15.4 mm; range 9-29.3 mm)...
December 2, 2016: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/27919270/delayed-hyperbaric-oxygen-therapy-for-air-emboli-after-open-heart-surgery-case-report-and-review-of-a-success-story
#3
Eva Niyibizi, Guillaume Elyes Kembi, Claude Lae, Rodrigue Pignel, Tornike Sologashvili
BACKGROUND: The current case describes a rare diagnosis of iatrogenic air emboli after elective cardiopulmonary bypass that was successfully treated with delayed hyperbaric oxygen therapy, with good clinical evolution in spite of rare complications. CASE PRESENTATION: A 35 years old male was admitted to the intensive care unit (ICU) for post-operative management after being placed on cardiopulmonary bypass (CPB) for an elective ventricular septal defect closure and aortic valvuloplasty...
December 5, 2016: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/27919003/altered-patterns-of-directed-connectivity-within-the-reading-network-of-dyslexic-children-and-their-relation-to-reading-dysfluency
#4
Gojko Žarić, João M Correia, Gorka Fraga González, Jurgen Tijms, Maurtis W van der Molen, Leo Blomert, Milene Bonte
Reading is a complex cognitive skill subserved by a distributed network of visual and language-related regions. Disruptions of connectivity within this network have been associated with developmental dyslexia but their relation to individual differences in the severity of reading problems remains unclear. Here we investigate whether dysfunctional connectivity scales with the level of reading dysfluency by examining EEG recordings during visual word and false font processing in 9-year-old typically reading children (TR) and two groups of dyslexic children: severely dysfluent (SDD) and moderately dysfluent (MDD) dyslexics...
November 19, 2016: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/27918935/depressive-symptoms-in-parkinson-s-disease-correlate-with-cortical-atrophy-over-time
#5
Alexandru Hanganu, Marie-Andrée Bruneau, Clotilde Degroot, Christophe Bedetti, Béatriz Mejia-Constain, Anne-Louise Lafontaine, Sylvain Chouinard, Oury Monchi
INTRODUCTION: Depressive symptoms are very common in patients with Parkinson's disease (PD) and have a significant impact on the quality of life. METHODS: The present study analyzed the correlations between over-time changes in depressive symptoms and gray matter parameters of cortical thickness and subcortical volumes in non-demented PD patients. RESULTS: A significant correlation was observed, between increased scores for depression over time and lower cortical thickness over time in the right temporo-parietal junction, right occipital medial region, right dorsolateral prefrontal cortex, right posterior cingulate region, left middle temporal as well as left supplementary motor area...
December 2, 2016: Brain and Cognition
https://www.readbyqxmd.com/read/27918911/cortical-amygdala-volumetric-ratios-predict-onset-of-symptoms-of-psychosis-in-22q11-2-deletion-syndrome
#6
David Berhanu, Leah M Mattiaccio, Kevin M Antshel, Wanda Fremont, Frank A Middleton, Wendy R Kates
Dysfunction of cortical circuitry involving prefrontal cortex, cingulate gyrus and mesial temporal lobe has been implicated in the pathophysiology of psychotic symptoms. 22q11.2 deletion syndrome (22q11DS) is a neurogenetic disorder that comports a 25-fold increased risk of developing psychosis. Morphological changes in the neuroanatomy of this syndrome may represent a biological risk factor for the development of psychosis. The present study explored ratios between cortical volumes and the amygdala. We also explored relationships between these ratios and the eventual development of psychosis in youth with 22q11DS...
November 25, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/27917700/posterior-reversible-encephalopathy-syndrome-following-elevated-mean-arterial-pressures-for-cervical-spinal-cord-injury
#7
Jeffrey H Zimering, Addisu Mesfin
BACKGROUND: Increasing the mean arterial pressure (MAP) is an accepted treatment modality to minimize the risk for irreversible neurologic damage secondary to spinal cord ischemia. Posterior reversible encephalopathy syndrome (PRES) is a rare complication occurring after transplantation surgery, in persons having an autoimmune disorder or after abrupt increases in blood pressure of various etiologies. STUDY DESIGN: Case report. METHODS: Retrospective evaluation of medical records...
December 5, 2016: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/27916830/influence-of-fragrances-on-human-psychophysiological-activity-with-special-reference-to-human-electroencephalographic-response
#8
REVIEW
Kandhasamy Sowndhararajan, Songmun Kim
The influence of fragrances such as perfumes and room fresheners on the psychophysiological activities of humans has been known for a long time, and its significance is gradually increasing in the medicinal and cosmetic industries. A fragrance consists of volatile chemicals with a molecular weight of less than 300 Da that humans perceive through the olfactory system. In humans, about 300 active olfactory receptor genes are devoted to detecting thousands of different fragrance molecules through a large family of olfactory receptors of a diverse protein sequence...
November 29, 2016: Scientia Pharmaceutica
https://www.readbyqxmd.com/read/27916670/pseudoneglect-in-line-bisection-judgement-is-associated-with-a-modulation-of-right-hemispheric-spatial-attention-dominance-in-right-handers
#9
Laure Zago, Laurent Petit, Gael Jobard, Julien Hay, Bernard Mazoyer, Nathalie Tzourio-Mazoyer, Hans-Otto Karnath, Emmanuel Mellet
The objective of this study was to validate a line bisection judgement (LBJ) task for use in investigating the lateralized cerebral bases of spatial attention in a sample of 51 right-handed healthy participants. Using functional magnetic resonance imaging (fMRI), the participants performed a LBJ task that was compared to a visuomotor control task during which the participants made similar saccadic and motoric responses. Cerebral lateralization was determined using a voxel-based functional asymmetry analysis and a hemispheric functional lateralization index (HFLI) computed from fMRI contrast images...
December 1, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27911950/a-specialized-multi-transmit-head-coil-for-high-resolution-fmri-of-the-human-visual-cortex-at-7t
#10
Shubharthi Sengupta, Alard Roebroeck, Valentin G Kemper, Benedikt A Poser, Jan Zimmermann, Rainer Goebel, Gregor Adriany
PURPOSE: To design, construct and validate radiofrequency (RF) transmit and receive phased array coils for high-resolution visual cortex imaging at 7 Tesla. METHODS: A 4 channel transmit and 16 channel receive array was constructed on a conformal polycarbonate former. Transmit field efficiency and homogeneity were simulated and validated, along with the Specific Absorption Rate, using [Formula: see text] mapping techniques and electromagnetic simulations. Receiver signal-to-noise ratio (SNR), temporal SNR (tSNR) across EPI time series, g-factors for accelerated imaging and noise correlations were evaluated and compared with a commercial 32 channel whole head coil...
2016: PloS One
https://www.readbyqxmd.com/read/27911248/international-multicenter-cohort-study-of-pediatric-brain-arteriovenous-malformations-part-1-predictors-of-hemorrhagic-presentation
#11
Dale Ding, Robert M Starke, Hideyuki Kano, David Mathieu, Paul P Huang, Caleb Feliciano, Rafael Rodriguez-Mercado, Luis Almodovar, Inga S Grills, Danilo Silva, Mahmoud Abbassy, Symeon Missios, Douglas Kondziolka, Gene H Barnett, L Dade Lunsford, Jason P Sheehan
OBJECTIVE Brain arteriovenous malformations (AVMs) are the most common cause of spontaneous intracranial hemorrhage in pediatric patients (age < 18 years). Since the cumulative lifetime risk of AVM hemorrhage is considerable in children, an improved understanding of the risk factors influencing hemorrhagic presentation may aid in the management of pediatric AVMs. The aims of this first of a 2-part multicenter, retrospective cohort study are to evaluate the incidence and determine the predictors of hemorrhagic presentation in pediatric AVM patients...
December 2, 2016: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/27910866/biomechanical-analysis-of-normal-brain-development-during-the-first-year-of-life-using-finite-strain-theory
#12
Jeong Chul Kim, Li Wang, Dinggang Shen, Weili Lin
The first year of life is the most critical time period for structural and functional development of the human brain. Combining longitudinal MR imaging and finite strain theory, this study aimed to provide new insights into normal brain development through a biomechanical framework. Thirty-three normal infants were longitudinally imaged using MRI from 2 weeks to 1 year of age. Voxel-wise Jacobian determinant was estimated to elucidate volumetric changes while Lagrange strains (both normal and shear strains) were measured to reveal directional growth information every 3 months during the first year of life...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910093/headache-attributed-to-craniocervical-dystonia-a-little-known-headache
#13
Marcos Eugenio Ramalho Bezerra, Pedro Augusto Sampaio Rocha-Filho
BACKGROUND: Craniocervical dystonia is a focal or segmental dystonia in its distribution, classically known as spasmodic torticollis when in its pure cervical presentation. Although craniocervical dystonia has been recognized as a possible cause of headache since the publication of the second version of International Classification of Headache Disorders, there are few studies about this entity. METHOD: This was a narrative review. RESULTS: Craniocervical dystonia was associated with muscle pain in 67-89% of the cases...
December 2, 2016: Headache
https://www.readbyqxmd.com/read/27910088/the-efficacy-of-greater-occipital-nerve-blockade-in-chronic-migraine-a-placebo-controlled-study
#14
H L Gul, A O Ozon, O Karadas, G Koc, L E Inan
OBJECTIVE: GON blockade with local anesthetics is an effective treatment for a group of headaches, such as cervicogenic headache, cluster headache, occipital neuralgia, migraine. Our aim was to evaluate the efficacy of greater occipital nerve (GON) blockade in patients with chronic migraine (CM) by using a control group. MATERIALS AND METHODS: We included 44 CM patients and randomly divide the patients into two groups, as group A (bupivacaine) and group B (placebo) to our study...
December 2, 2016: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/27909746/brain-glutamate-in-anorexia-nervosa-a-magnetic-resonance-spectroscopy-case-control-study-at-7-tesla
#15
Beata R Godlewska, Alexandra Pike, Ann L Sharpley, Agnes Ayton, Rebecca J Park, Philip J Cowen, Uzay E Emir
RATIONALE: Anorexia nervosa (AN) is a serious psychiatric disorder with high morbidity and mortality. There are no established pharmacological treatments and the neurobiology of the condition is poorly understood. Previous studies using magnetic resonance spectroscopy (MRS) have shown that AN may be associated with reductions in indices of brain glutamate; however, at conventional field strengths (≤3 T), it is difficult to separate glutamate from its precursor and metabolite, glutamine...
December 1, 2016: Psychopharmacology
https://www.readbyqxmd.com/read/27907134/reward-contingencies-improve-goal-directed-behavior-by-enhancing-posterior-brain-attentional-regions-and-increasing-corticostriatal-connectivity-in-cocaine-addicts
#16
Patricia Rosell-Negre, Juan-Carlos Bustamante, Paola Fuentes-Claramonte, Víctor Costumero, Juan-José Llopis-Llacer, Alfonso Barrós-Loscertales
The dopaminergic system provides the basis for the interaction between motivation and cognition. It is triggered by the possibility of obtaining rewards to initiate the neurobehavioral adaptations necessary to achieve them by directing the information from motivational circuits to cognitive and action circuits. In drug addiction, the altered dopamine (DA) modulation of the meso-cortico-limbic reward circuitry, such as the prefrontal cortex (PFC), underlies the disproportionate motivational value of drug use at the expense of other non-drug reinforcers and the user's loss of control over his/her drug intake...
2016: PloS One
https://www.readbyqxmd.com/read/27906740/a-new-method-of-measuring-the-occipitocervical-angle-that-could-be-applied-as-an-intraoperative-indicator-during-occipitocervical-fusion
#17
Shingo Nagashima, Masateru Nagae, Yuji Arai, Hitoshi Tonomura, Ryota Takatori, Tsuyoshi Sukenari, Hiroyoshi Fujiwara, Koshiro Sawada, Yasuo Mikami, Toshikazu Kubo
STUDY DESIGN: A method for measuring occipitocervical angle. OBJECTIVE: To develop a new method of measurement for assessing the occipitocervical angle using intraoperative fluoroscopic imaging, and to examine its reliability. SUMMARY OF BACKGROUND DATA: To avoid postoperative complications following occipitocervical fusion, it is vital to obtain a suitable fusion angle between the occipital bone and the upper cervical spine. MATERIALS AND METHODS: The subjects were 30 cases with occipito-atlanto-axial lesions and 30 healthy volunteers...
November 30, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27904755/paraplegia-caused-by-cerebral-contusions-in-the-bilateral-precentral-gyri
#18
Hideaki Matsumura, Hiroyuki Fujimori, Naoaki Sato, Akira Matsumura
BACKGROUND: Paraplegia is mainly caused by spinal cord disease and rarely occurs due to head trauma. In this report, we describe a case of paraplegia caused by cerebral contusions in the bilateral precentral gyri. CASE DESCRIPTION: A 72-year-old man was admitted to our hospital with mildly impaired consciousness and severe pure motor paralysis in both legs. He was healthy until the morning of the day, but his wife found him injured in front of his house upon returning home...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/27904721/usefulness-of-k-point-injection-for-the-nonspecific-neck-pain-in-so-called-k-point-syndrome
#19
Jeong Jae Moon, Myun Whan Ahn, Hyo Sae Ahn, Sung Jun Lee, Dong Yeol Lee
BACKGROUND: Shoichi Kokubun introduced his successful experience with local anesthetic injection at the occipital insertion of the sternocleidomastoid muscle in K-point syndrome. The purpose of this study was to evaluate the short-term and long-term effectiveness of K-point injection and investigate factors affecting treatment results. METHODS: K-point injection was performed in 58 patients with K-point syndrome at Yeungnam University Medical Center. The syndrome was associated with cervical whiplash injury in 10 patients and was of nonspecific origin in the rest...
December 2016: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/27902956/usefulness-of-cervical-computed-tomography-and-magnetic-resonance-imaging-for-rapid-diagnosis-of-crowned-dens-syndrome-a-case-report-and-review-of-the-literature
#20
Akihiro Inoue, Kanehisa Kohno, Satoko Ninomiya, Hitomi Tomita, Shinji Iwata, Shiro Ohue, Kenji Kamogawa, Kensho Okamoto, Shinya Fukumoto, Haruhisa Ichikawa, Shinji Onoue, Saya Ozaki, Bungo Okuda
INTRODUCTION: Crowned dens syndrome is a rare disease entity which radiologically shows calcification of the cruciform ligament around the odontoid process. We report a patient with crowned dens syndrome who improved dramatically in 5days following treatment with oral nonsteroidal anti-inflammatory medication. PRESENTATION OF CASE: A 61-year-old man was admitted to our hospital with a severe occipital headache and sudden onset of neck stiffness. Neurological examination on admission revealed a high fever and cervical rigidity...
November 23, 2016: International Journal of Surgery Case Reports
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"