keyword
MENU ▼
Read by QxMD icon Read
search

Images

keyword
https://www.readbyqxmd.com/read/27915451/interobserver-agreement-in-detection-of-white-globe-appearance-and-the-ability-of-educational-lectures-to-improve-the-diagnosis-of-gastric-lesions
#1
Hitoshi Omura, Naohiro Yoshida, Tomoyuki Hayashi, Kazuhiro Miwa, Hajime Takatori, Hirokazu Tsuji, Katsuhisa Inamura, Yukihiro Shirota, Hiroyuki Aoyagi, Takaharu Masunaga, Kazuyoshi Katayanagi, Hiroshi Kurumaya, Shuichi Kaneko, Hisashi Doyama
BACKGROUND: White globe appearance (WGA) refers to a small white lesion of globular shape underneath cancerous gastric epithelium that can be clearly visualized by magnifying endoscopy with narrowband imaging (M-NBI). WGA has been reported to be a novel endoscopic marker that is highly specific in differentiating early gastric cancer (GC) from low-grade adenoma, and has a significantly higher prevalence in early GCs than in noncancerous lesions. However, interobserver agreement in detecting WGA and whether training intervention can improve diagnostic accuracy are unknown...
December 3, 2016: Gastric Cancer
https://www.readbyqxmd.com/read/27915448/bone-mineral-content-and-areal-density-but-not-bone-area-predict-an-incident-fracture-risk-a-comparative-study-in-a-uk-prospective-cohort
#2
E M Curtis, N C Harvey, S D'Angelo, C S Cooper, K A Ward, P Taylor, G Pearson, C Cooper
: We studied a prospective UK cohort of women aged 20 to 80 years, assessed by dual-energy X-ray absorptiometry (DXA) at baseline. Bone mineral content (BMC) and areal bone mineral density (aBMD), but not bone area (BA), at femoral neck, lumbar spine and the whole body sites were similarly predictive of incident fractures. BACKGROUND: Low aBMD, measured by DXA, is a well-established risk factor for future fracture, but little is known about the performance characteristics of other DXA measures such as BA and BMC in fracture prediction...
December 2016: Archives of Osteoporosis
https://www.readbyqxmd.com/read/27915446/superior-dislocation-of-the-patella-a-pathognomonic-finding-and-review-of-literature
#3
P W van Egmond, M C Vermeulen, C F van Dijke, H C A Graat
A 59-year-old woman with a painful right knee that became locked in extension after a trivial trauma was seen at the emergency room. This was caused by unloaded hyperextension in bed. She was diagnosed with a superior dislocation of the patella. A closed reduction was performed, but a recurrent episode was seen within a week. An arthroscopy was performed, in which the causative osteophytes were removed. In the 12-month follow-up after treatment, no recurrence was seen. A superior dislocation of the patella is caused by patellofemoral osteophytes that interlock...
December 3, 2016: Skeletal Radiology
https://www.readbyqxmd.com/read/27915398/the-interactive-electrode-localization-utility-software-for-automatic-sorting-and-labeling-of-intracranial-subdural-electrodes
#4
Roan A LaPlante, Wei Tang, Noam Peled, Deborah I Vallejo, Mia Borzello, Darin D Dougherty, Emad N Eskandar, Alik S Widge, Sydney S Cash, Steven M Stufflebeam
PURPOSE: Existing methods for sorting, labeling, registering, and across-subject localization of electrodes in intracranial encephalography (iEEG) may involve laborious work requiring manual inspection of radiological images. METHODS: We describe a new open-source software package, the interactive electrode localization utility which presents a full pipeline for the registration, localization, and labeling of iEEG electrodes from CT and MR images. In addition, we describe a method to automatically sort and label electrodes from subdural grids of known geometry...
December 3, 2016: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/27915397/age-and-gender-interactions-in-white-matter-of-schizophrenia-and-obsessive-compulsive-disorder-compared-to-non-psychiatric-controls-commonalities-across-disorders
#5
Colin Hawco, Aristotle N Voineskos, Natasha Radhu, David Rotenberg, Stephanie Ameis, Felicity A Backhouse, Mawahib Semeralul, Zafiris J Daskalakis
Schizophrenia (SCZ) and obsessive-compulsive disorder (OCD) are psychiatric disorders with abnormalities in white matter structure. These disorders share high comorbidity and family history of OCD is a risk factor for SCZ which suggests some shared neurobiology. White matter was examined using diffusion tensor imaging in relativity large samples of SCZ (N = 48), OCD (N = 38) and non-psychiatric controls (N = 45). Fractional anisotropy (FA) was calculated and tract based spatial statistics were used to compare groups...
December 3, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27915378/mother-infant-interactions-and-regional-brain-volumes-in-infancy-an-mri-study
#6
Vaheshta Sethna, Inês Pote, Siying Wang, Maria Gudbrandsen, Anna Blasi, Caroline McCusker, Eileen Daly, Emily Perry, Kerrie P H Adams, Maria Kuklisova-Murgasova, Paula Busuulwa, Sarah Lloyd-Fox, Lynne Murray, Mark H Johnson, Steven C R Williams, Declan G M Murphy, Michael C Craig, Grainne M McAlonan
It is generally agreed that the human brain is responsive to environmental influences, and that the male brain may be particularly sensitive to early adversity. However, this is largely based on retrospective studies of older children and adolescents exposed to extreme environments in childhood. Less is understood about how normative variations in parent-child interactions are associated with the development of the infant brain in typical settings. To address this, we used magnetic resonance imaging to investigate the relationship between observational measures of mother-infant interactions and regional brain volumes in a community sample of 3- to 6-month-old infants (N = 39)...
December 3, 2016: Brain Structure & Function
https://www.readbyqxmd.com/read/27915327/posterior-retinal-hemorrhages-during-retcam-examination-for-retinopathy-of-prematurity
#7
Parijat Chandra, Rajvardhan Azad
BACKGROUND: Retcam-assisted retinopathy of prematurity (ROP) screening is a commonly used safe examination procedure. CASE CHARACTERISTICS: A preterm baby born at 32 weeks gestation age developed extensive posterior retinal hemorrhages during retinal imaging using the RetCam. OUTCOME: Retinal hemorrhages spontaneously resolved. MESSAGE: As tele screening is becomes more popular, proper training for Retcam usage is essential...
November 7, 2016: Indian Pediatrics
https://www.readbyqxmd.com/read/27915310/retinopathy-of-prematurity-profile-and-trend-over-the-years-experience-from-a-two-tier-city-in-eastern-india
#8
Tapas Ranjan Padhi, Lubhani Jain, Umesh Chandra Behera, Lingaraj Pradhan
The Retinopathy of Prematurity (ROP) epidemic is no more confined to metro cities and has spread to interior states including Eastern India. There is hardly any published data available on the subject, including the incidence and profile of babies with ROP, screening experience with binocular indirect ophthalmoscope and wide-field digital retinal imaging, as well as the difficulties faced with each model. In our cohort, 33.2% had ROP and 25.3% of babies with ROP required treatment. Mean (SD) gestational age and birth weight were 30...
November 7, 2016: Indian Pediatrics
https://www.readbyqxmd.com/read/27915238/pontine-changes-in-metabolites-and-axonal-fibres-of-rats-following-four-week-alcohol-exposure-in-vivo-diffusion-tensor-imaging-and-1h-magnetic-resonance-spectroscopy-study-at-7-0-t
#9
Jianming Luo, Zhiwei Shen, Guang Chen, Dian Wang, Xiaojun Yu
AIMS: We characterized the metabolite content and axonal fibre changes in the rat pontine, in vivo, using (1)H-magnetic resonance spectroscopy (1H-MRS) and diffusion tensor imaging (DTI) with a 7.0 T magnetic resonance imaging (MRI) scanner following chronic alcohol administration to explore new indicators for the early diagnosis and treatment of chronic alcoholism. METHODS: Forty male Sprague-Dawley rats were randomly divided into the EtOH and control groups (water group)...
December 3, 2016: Alcohol and Alcoholism: International Journal of the Medical Council on Alcoholism
https://www.readbyqxmd.com/read/27915210/functional-brain-imaging-of-walking-while-talking-an-fnirs-study
#10
Florian G Metzger, Ann-Christine Ehlis, Florian B Haeussinger, Patrick Schneeweiss, Justin Hudak, Andreas J Fallgatter, Sabrina Schneider
Since functional imaging of whole body movements is not feasible with functional magnetic resonance imaging (fMRI), the present study presents in vivo functional near-infrared spectroscopy (fNIRS) as a suitable technique to measure body movement effects on fronto-temporo-parietal cortical activation in single and dual task paradigms. Previous fNIRS applications in studies addressing whole body movements were typically limited to the assessment of prefrontal brain areas. The current study investigated brain activation in the frontal, temporal and parietal cortex of both hemispheres using functional near-infrared spectroscopy (fNIRS) with two large 4 x 4 probe-sets with 24 channels each during single and dual gait tasks...
November 30, 2016: Neuroscience
https://www.readbyqxmd.com/read/27915125/artificial-neural-networks-as-a-powerful-numerical-tool-to-classify-specific-features-of-a-tooth-based-on-3d-scan-data
#11
Stefan Raith, Eric Per Vogel, Naeema Anees, Christine Keul, Jan-Frederik Güth, Daniel Edelhoff, Horst Fischer
Chairside manufacturing based on digital image acquisition is gainingincreasing importance in dentistry. For the standardized application of these methods, it is paramount to have highly automated digital workflows that can process acquired 3D image data of dental surfaces. Artificial Neural Networks (ANNs) arenumerical methods primarily used to mimic the complex networks of neural connections in the natural brain. Our hypothesis is that an ANNcan be developed that is capable of classifying dental cusps with sufficient accuracy...
November 27, 2016: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/27915121/predicting-individual-brain-functional-connectivity-using-a-bayesian-hierarchical-model
#12
Tian Dai, Ying Guo
Network-oriented analysis of functional magnetic resonance imaging (fMRI), especially resting-state fMRI, has revealed important association between abnormal connectivity and brain disorders such as schizophrenia, major depression and Alzheimer's disease. Imaging-based brain connectivity measures have become a useful tool for investigating the pathophysiology, progression and treatment response of psychiatric disorders and neurodegenerative diseases. Recent studies have started to explore the possibility of using functional neuroimaging to help predict disease progression and guide treatment selection for individual patients...
November 30, 2016: NeuroImage
https://www.readbyqxmd.com/read/27915120/gradient-and-shim-technologies-for-ultra-high-field-mri
#13
Simone A Winkler, Franz Schmitt, Hermann Landes, Josh DeBever, Trevor Wade, Andrew Alejski, Brian K Rutt
Ultra High Field (UHF) MRI requires improved gradient and shim performance to fully realize the promised gains (SNR as well as spatial, spectral, diffusion resolution) that higher main magnetic fields offer. Both the more challenging UHF environment by itself, as well as the higher currents used in high performance coils, require a deeper understanding combined with sophisticated engineering modeling and construction, to optimize gradient and shim hardware for safe operation and for highest image quality. This review summarizes the basics of gradient and shim technologies, and outlines a number of UHF-related challenges and solutions...
November 30, 2016: NeuroImage
https://www.readbyqxmd.com/read/27915119/neural-correlates-of-pupil-dilation-during-human-fear-learning
#14
Laura Leuchs, Max Schneider, Michael Czisch, Victor I Spoormaker
BACKGROUND: Fear conditioning and extinction are prevailing experimental and etiological models for normal and pathological anxiety. Pupil dilations in response to conditioned stimuli are increasingly used as a robust psychophysiological readout of fear learning, but their neural correlates remain unknown. We aimed at identifying the neural correlates of pupil responses to threat and safety cues during a fear learning task. METHODS: Thirty-four healthy subjects underwent a fear conditioning and extinction paradigm with simultaneous functional magnetic resonance imaging (fMRI) and pupillometry...
December 1, 2016: NeuroImage
https://www.readbyqxmd.com/read/27915118/a-streamlined-acquisition-for-mapping-baseline-brain-oxygenation-using-quantitative-bold
#15
Alan J Stone, Nicholas P Blockley
Quantitative BOLD (qBOLD) is a non-invasive MR technique capable of producing quantitative measurements of the haemodynamic and metabolic properties of the brain. Here we propose a refinement of the qBOLD methodology, dubbed streamlined-qBOLD, in order to provide a clinically feasible method for mapping baseline brain oxygenation. In streamlined-qBOLD confounding signal contributions are minimised during data acquisition through the application of (i) a Fluid Attenuated Inversion Recovery (FLAIR) preparation to remove cerebral spinal fluid (CSF) signal contamination, (ii) a Gradient Echo Slice Excitation Profile Imaging (GESEPI) acquisition to reduce the effect of macroscopic magnetic field gradients and (iii) an Asymmetric Spin Echo (ASE) pulse sequence to directly measure the reversible transverse relaxation rate, R2'...
November 30, 2016: NeuroImage
https://www.readbyqxmd.com/read/27915116/7t-mr-of-intracranial-pathology-preliminary-observations-and-comparisons-to-3t-and-1-5t
#16
Emmanuel C Obusez, Mark Lowe, Se-Hong Oh, Irene Wang, M S Jennifer Bullen, Paul Ruggieri, Virginia Hill, Daniel Lockwood, Todd Emch, Doksu Moon, Gareth Loy, Jonathan Lee, Matthew Kiczek, D O Manoj Massand, Volodymyr Statsevych, Todd Stultz, Stephen E Jones
PURPOSE: There have been an increasing number of studies involving ultra-high-field 7T of intracranial pathology, however, comprehensive clinical studies of neuropathology at 7T still remain limited. 7T has the advantage of a higher signal-to-noise ratio and a higher contrast-to-noise ratio, compared to current low field clinical MR scanners. We hypothesized 7T applied clinically, may improve detection and characterization of intracranial pathology. MATERIALS AND METHODS: We performed an IRB-approved 7T prospective study of patients with neurological disease who previously had lower field 3T and 1...
November 30, 2016: NeuroImage
https://www.readbyqxmd.com/read/27915115/a-novel-measure-of-reliability-in-diffusion-tensor-imaging-after-data-rejections-due-to-subject-motion
#17
V Sairanen, L Kuusela, O Sipilä, S Savolainen, S Vanhatalo
Diffusion Tensor Imaging (DTI) is commonly challenged by subject motion during data acquisition, which often leads to corrupted image data. Currently used procedure in DTI analysis is to correct or completely reject such data before tensor estimations, however assessing the reliability and accuracy of the estimated tensor in such situations has evaded previous studies. This work aims to define the loss of data accuracy with increasing image rejections, and to define a robust method for assessing reliability of the result at voxel level...
November 30, 2016: NeuroImage
https://www.readbyqxmd.com/read/27915091/electroconvulsive-stimulation-transiently-enhances-the-permeability-of-the-rat-blood-brain-barrier-and-induces-astrocytic-changes
#18
Masanobu Ito, Kuerban Bolati, Tomoya Kinjo, Koichiro Ichimura, Akiko Furuta, Declan M McLoughlin, Toshihito Suzuki, Heii Arai
The blood-brain barrier (BBB) plays important roles in both the physiological and pharmacological state of the brain. Transiently enhancing the permeability of the BBB may allow use of more types of medications for neuropsychiatric diseases. Several studies have demonstrated that seizures cause a transient decrease in BBB integrity. We studied the timing of BBB changes following seizures and the role of astrocytes in this process. Rats received 10 applications of electroconvulsive stimulation (ECS). They were then infused with sodium fluorescein, a fluorescent substance that rarely passes the BBB, via the inferior vena cava...
November 30, 2016: Brain Research Bulletin
https://www.readbyqxmd.com/read/27915065/assessment-of-white-matter-transgression-during-neuroendoscopic-procedures-using-dti-fiber-tracking
#19
Sergio García, Jordina Rincon-Torroella, Arnau Benet, Laura Oleaga, José Juan González Sánchez
BACKGROUND: Presurgical planning allows anticipating intraoperative difficulties, increasing efficiency, and reducing risks. Neuroendoscopy is a minimally invasive technique whose related complications have been focused on cortical function and surface vessels injury. However, white matter disruption has been insufficiently acknowledged. OBJECTIVE: To present a new surgical planning method based on diffusion tensor image that allows quantifying subcortical transgression and optimizing neuroendoscopic trajectories...
November 30, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27915063/preoperative-prediction-of-the-location-and-shape-of-the-facial-nerve-in-patients-with-large-vestibular-schwannomas-using-diffusion-tensor-imaging-based-fiber-tracking
#20
Yanyang Zhang, Zhiqi Mao, Penghu Wei, Yazhou Jin, Lin Ma, Jun Zhang, Xinguang Yu
OBJECTIVE: Preserving the facial nerve (FN) during surgery for large vestibular schwannomas (VSs) is challenging because of the unpredictable locations and morphological changes in the FN. Diffusion tensor imaging-based fiber tracking (DTI-FT) has been proposed to preoperatively visualize the FN. This study was performed to evaluate the efficacy of DTI-FT for predicting FN location and shape in patients with large VSs. METHODS: In this prospective study, imaging data from 30 consecutive patients with large VSs were obtained using 3-T magnetic resonance imaging...
November 30, 2016: World Neurosurgery
keyword
keyword
33938
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"