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https://www.readbyqxmd.com/read/28213758/influence-of-a-combined-ct-c-arm-system-on-periprocedural-workflow-and-procedure-times-in-mechanical-thrombectomy
#1
Johannes Pfaff, Silvia Schönenberger, Christian Herweh, Mirko Pham, Simon Nagel, Peter Arthur Ringleb, Sabine Heiland, Martin Bendszus, Markus Alfred Möhlenbruch
OBJECTIVE: To achieve the fastest possible workflow in ischaemic stroke, we developed a CT/C-arm system, which allows imaging and endovascular treatment on the same patient table. METHODS: This prospective, monocentric trial was conducted between October 2014 and August 2016. Patients received stroke imaging and mechanical thrombectomy under general anaesthesia (GA) or conscious sedation (CS) using our combined setup comprising a CT-scanner and a mobile C-arm X-ray device...
February 17, 2017: European Radiology
https://www.readbyqxmd.com/read/28213342/virtual-visits-for-acute-nonurgent-care-a-claims-analysis-of-episode-level-utilization
#2
Aliza S Gordon, Wallace C Adamson, Andrea R DeVries
BACKGROUND: Expansion of virtual health care-real-time video consultation with a physician via the Internet-will continue as use of mobile devices and patient demand for immediate, convenient access to care grow. OBJECTIVE: The objective of the study is to analyze the care provided and the cost of virtual visits over a 3-week episode compared with in-person visits to retail health clinics (RHC), urgent care centers (UCC), emergency departments (ED), or primary care physicians (PCP) for acute, nonurgent conditions...
February 17, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28213087/a-rare-case-of-bruns-syndrome-with-bilateral-superior-oblique-palsy-and-dorsal-midbrain-syndrome
#3
Rebika Dhiman, Medha Sharma, Anin Sethi, Sanjay Sharma, Atin Kumar, Rohit Saxena
We report a case of an 11-year-old boy referred for evaluation of esotropia associated with a 4-year history of intermittent headaches and vomiting triggered by sudden movements, such as sneezing and coughing. Magnetic resonance imaging (MRI) performed 3 years previously was reported to be normal. A thorough clinical examination revealed the clinical features of Dorsal midbrain syndrome with Bruns syndrome and bilateral superior oblique palsy. Advanced MRI sequences revealed a freely mobile intraventricular cysticercus causing obstructive panhydrocephalus...
February 14, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28212353/effect%C3%A2-of%C3%A2-fibre%C3%A2-supplementation%C3%A2-on%C3%A2-body%C3%A2-weight%C3%A2-and%C3%A2-composition-%C3%A2-frequency%C3%A2-of%C3%A2-eating%C3%A2-and%C3%A2-dietary%C3%A2-choice%C3%A2-in%C3%A2-overweight%C3%A2-individuals
#4
Vicky A Solah, Deborah A Kerr Wendy J Hunt, Stuart K Johnson, Carol J Boushey, Edward J Delp, Xingqiong Meng, Roland J Gahler, Anthony P James, Aqif S Mukhtar, Haelee K Fenton, Simon Wood
Fibre supplementation can potentially reduce energy intake and contribute to weight loss. The mechanism may be reduced frequency of eating, resulting in reduced food consumption. The objective of this research was to determine the effectiveness of fibre supplementation with PolyGlycopleX® (PGX®), on body weight and composition, frequency of eating and dietary intake in 118 overweight adults. In a three-arm, parallel, blind, randomised controlled trial participants were randomised to one of three groups; 4...
February 16, 2017: Nutrients
https://www.readbyqxmd.com/read/28208766/improved-omnidirectional-odometry-for-a-view-based-mapping-approach
#5
David Valiente, Arturo Gil, Óscar Reinoso, Miguel Juliá, Mathew Holloway
This work presents an improved visual odometry using omnidirectional images. The main purpose is to generate a reliable prior input which enhances the SLAM (Simultaneous Localization and Mapping) estimation tasks within the framework of navigation in mobile robotics, in detriment of the internal odometry data. Generally, standard SLAM approaches extensively use data such as the main prior input to localize the robot. They also tend to consider sensory data acquired with GPSs, lasers or digital cameras, as the more commonly acknowledged to re-estimate the solution...
February 9, 2017: Sensors
https://www.readbyqxmd.com/read/28208468/colloidal-polycrystalline-monolayers-under-oscillatory-shear
#6
Ivo Buttinoni, Mathias Steinacher, Hendrik Th Spanke, Juho Pokki, Severin Bahmann, Bradley Nelson, Giuseppe Foffi, Lucio Isa
In this paper we probe the structural response to oscillatory shear deformations of polycrystalline monolayers of soft repulsive colloids with varying area fraction over a broad range of frequencies and amplitudes. The particles are confined at a fluid interface, sheared using a magnetic microdisk, and imaged through optical microscopy. The structural and mechanical response of soft materials is highly dependent on their microstructure. If crystals are well understood and deform through the creation and mobilization of specific defects, the situation is much more complex for disordered jammed materials, where identifying structural motifs defining plastically rearranging regions remains an elusive task...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208420/hydrodynamic-mobility-of-a-solid-particle-near-a-spherical-elastic-membrane-axisymmetric-motion
#7
Abdallah Daddi-Moussa-Ider, Stephan Gekle
We use the image solution technique to compute the leading order frequency-dependent self-mobility function of a small solid particle moving perpendicular to the surface of a spherical capsule whose membrane possesses shearing and bending rigidities. Comparing our results with those obtained earlier for an infinitely extended planar elastic membrane, we find that membrane curvature leads to the appearance of a prominent additional peak in the mobility. This peak is attributed to the fact that the shear resistance of the curved membrane involves a contribution from surface-normal displacements, which is not the case for planar membranes...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28203122/evaluation-of-the-effect-of-radiofrequency-radiation-emitted-from-wi-fi-router-and-mobile-phone-simulator-on-the-antibacterial-susceptibility-of-pathogenic-bacteria-listeria-monocytogenes-and-escherichia-coli
#8
M Taheri, S M J Mortazavi, M Moradi, S Mansouri, G R Hatam, F Nouri
Mobile phones and Wi-Fi radiofrequency radiation are among the main sources of the exposure of the general population to radiofrequency electromagnetic fields (RF-EMF). Previous studies have shown that exposure of microorganisms to RF-EMFs can be associated with a wide spectrum of changes ranged from the modified bacterial growth to the alterations of the pattern of antibiotic resistance. Our laboratory at the nonionizing department of the Ionizing and Non-ionizing Radiation Protection Research Center has performed experiments on the health effects of exposure to animal models and humans to different sources of electromagnetic fields such as cellular phones, mobile base stations, mobile phone jammers, laptop computers, radars, dentistry cavitrons, magnetic resonance imaging, and Helmholtz coils...
January 2017: Dose-response: a Publication of International Hormesis Society
https://www.readbyqxmd.com/read/28198634/phase-composition-control-in-microsphere-supported-biomembrane-systems
#9
Eric S Fried, Yue-Ming Li, Malcolm Lane Gilchrist
The popularization of studies in membrane protein lipid phase coexistence has prompted the development of new techniques to construct and study biomimetic systems with cholesterol-rich lipid microdomains. Here, microsphere supported biomembranes with integrated α-helical peptides, referred to as proteolipobeads (PLBs), were used to model peptide/protein partitioning within DOPC/DPPC/cholesterol phase-separated membranes. Due to the appearance of compositional heterogeneity and impurities in the formation of model PLB assemblies, fluorescence-activated cell sorting (FACS) was used to characterize and sort PLB populations on the basis of disordered phase (Ld) content...
February 15, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28197113/what-is-seen-is-who-you-are-are-cues-in-selfie-pictures-related-to-personality-characteristics
#10
Bojan Musil, Andrej Preglej, Tadevž Ropert, Lucia Klasinc, Nenad Č Babič
Developments and innovation in the areas of mobile information technology, digital media and social networks foster new reflections on computer-mediated communication research, especially in the field of self-presentation. In this context, the selfie as a self-portrait photo is interesting, because as a meaningful gesture, it actively and directly relates the content of the photo to the author of the picture. From the perspective of the selfie as an image and the impression it forms, in the first part of the research we explored the distinctive characteristics of selfie pictures; moreover, from the perspective of the potential reflection of a selfie image on the personality of its author, in the second part we related the characteristics of selfie pictures to various personality constructs (e...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28195576/the-mole-mapper-study-mobile-phone-skin-imaging-and-melanoma-risk-data-collected-using-researchkit
#11
Dan E Webster, Christine Suver, Megan Doerr, Erin Mounts, Lisa Domenico, Tracy Petrie, Sancy A Leachman, Andrew D Trister, Brian M Bot
Sensor-embedded phones are an emerging facilitator for participant-driven research studies. Skin cancer research is particularly amenable to this approach, as phone cameras enable self-examination and documentation of mole abnormalities that may signal a progression towards melanoma. Aggregation and open sharing of this participant-collected data can be foundational for research and the development of early cancer detection tools. Here we describe data from Mole Mapper, an iPhone-based observational study built using the Apple ResearchKit framework...
February 14, 2017: Scientific Data
https://www.readbyqxmd.com/read/28195302/testing-biomechanical-models-of-human-lumbar-lordosis-variability
#12
Eric R Castillo, Connie Hsu, Ross W Mair, Daniel E Lieberman
OBJECTIVES: Lumbar lordosis (LL) is a key adaptation for bipedalism, but factors underlying curvature variations remain unclear. This study tests three biomechanical models to explain LL variability. MATERIALS AND METHODS: Thirty adults (15 male, 15 female) were scanned using magnetic resonance imaging (MRI), a standing posture analysis was conducted, and lumbar range of motion (ROM) was assessed. Three measures of LL were compared. The trunk's center of mass was estimated from external markers to calculate hip moments (Mhip ) and lumbar flexion moments...
February 13, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28194956/direct-imaging-of-single-plasmonic-metal-nanoparticles-in-capillary-with-laser-light-sheet-scattering-imaging
#13
Xuan Cao, Jingjing Feng, Qi Pan, Bin Xiong, Yan He, Edward S Yeung
Understanding the heterogeneous distribution of the physical and chemical properties of plasmonic metal nanoparticles is fundamentally important to their basic and applied research. Traditionally, they are obtained either indirectly via bulk spectroscopic measurements plus electron microscopic characterizations, or through single molecule/particle imaging of nanoparticles immobilized on planar substrates. In this study, by using light-sheet scattering microscopy with a supercontinuum white laser, highly sensitive imaging of individual MNPs flowing inside a capillary, driven by either pressure or electric field, was achieved for the first time...
February 13, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28193694/different-cav1-3-channel-isoforms-control-distinct-components-of-the-synaptic-vesicle-cycle-in-auditory-inner-hair-cells
#14
Philippe Fy Vincent, Yohan Bouleau, Gilles Charpentier, Alice Emptoz, Saaid Safieddine, Christine Petit, Didier Dulon
The mechanisms orchestrating transient and sustained exocytosis in auditory inner hair cells (IHCs) remain largely unknown. These exocytotic responses are believed to mobilize sequentially a readily releasable pool of vesicles (RRP) underneath the synaptic ribbons and a slowly releasable pool of vesicles (SRP) at farther distance from them. They are both governed by Cav1.3 channels and require otoferlin as Ca(2+) sensor but whether they use the same Cav1.3 isoforms is still unknown. Using whole cell patch clamp recordings in post-hearing mice, we show that only a proportion (∼25 %) of the total Ca(2+) current in IHCs, displaying fast inactivation and resistance to 20 μM nifedipine, a L-type Ca(2+) channel blocker, is sufficient to trigger RRP but not SRP exocytosis...
February 13, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28193015/derivatization-strategies-for-the-detection-of-triamcinolone-acetonide-in-cartilage-by-using-matrix-assisted-laser-desorption-ionization-mass-spectrometry-imaging
#15
Florian P Y Barré, Bryn Flinders, João P Garcia, Imke Jansen, Lennart R S Huizing, Tiffany Porta, Laura B Creemers, Ron M A Heeren, Berta Cillero-Pastor
Osteoarthritis (OA), characterized by degeneration of the cartilaginous tissue in articular joints, severely impairs mobility in many people worldwide. The degeneration is thought to be mediated by inflammatory processes occurring in the tissue of the joint, including the cartilage. Intra-articular administered triamcinolone acetonide (TAA) is one of the drug treatments employed to ameliorate the inflammation and pain that characterizes OA. However, the penetration and distribution of TAA into the avascular cartilage is not well understood...
December 20, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/28191559/reduced-graphene-oxide-liquid-crystalline-oligomer-composites-based-on-reversible-covalent-chemistry
#16
Xiaodong Zhang, Yuehua Cong, Baoyan Zhang
As the properties of materials can be determined by their structures, a novel liquid crystalline oligomer (LCO) was first designed and prepared. The LCO possessed reactivity with reduced graphene oxide (RGO) and could be used to modify RGO. Maleimide groups could be grafted onto the RGO surface via the Diels-Alder reaction, whereby the mesogenic units enable the LCO to have optical rotation and excellent liquid crystalline properties, while the carboxyl groups could improve the dispersibility of RGO in solvents and disperse more TiO2 on the surface of modified RGO than on pure RGO...
February 13, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28189113/monodisperse-mesoporous-silica-nanoparticles-of-distinct-topology
#17
Leilei Luo, Yucang Liang, Egil Sev Erichsen, Reiner Anwander
Monodisperse and uniform high-quality MCM(Mobil Composition of Matter)-48-type CMSNs (Cubic Mesoporous Silica Nanoparticles) are readily prepared by simply optimizing the molar ratio of ethanol and surfactant in the system TEOS-CTAB-NaOH-H2O-EtOH (TEOS=tetraethyl orthosilicate, CTAB=cetyltrimethylammonium bromide, EtOH=ethanol). In the absence of ethanol only hexagonal mesoporous silica with ellipsoidal and spherical morphology are obtained. The presence of ethanol drives a mesophase transformation from hexagonal to mixed hexagonal/cubic, further to purely cubic, and finally to a mixed cubic/lamellar...
January 31, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28186032/usability-and-ehealth-literacy-evaluation-of-a-mobile-health-application-prototype-to-track-diagnostic-imaging-examinations
#18
Janessa Griffith, Helen Monkman
In the absence of a pan-Canadian electronic health record, unnecessary duplicate diagnostic imaging (DI) examinations are sometimes ordered when a physician is not aware of prior DI or prior DI is not available. Research suggests that physicians may ask their patient to recall their DI history; however, patient recall of DI can be unreliable. As a potential solution, a patient-facing mobile health application (app) prototype was developed for users to record their DI. The app was designed to be usable and inclusive to users of all health literacy levels...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28174460/inter-and-intra-rater-agreement-of-static-posture-analysis-using-a-mobile-application
#19
David M Boland, Eric V Neufeld, Jack Ruddell, Brett A Dolezal, Christopher B Cooper
[Purpose] To determine the intra- and inter-rater agreement of a mobile application, PostureScreen Mobile(®) (PSM), that assesses static standing posture. [Subjects and Methods] Three examiners with different levels of experience of assessing posture, one licensed physical therapist and two untrained undergraduate students, performed repeated postural assessments of 10 subjects, fully clothed or minimally clothed, using PSM on two nonconsecutive days. Anterior and right lateral images were captured and seventeen landmarks were identified on them...
December 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28170186/live-tissue-imaging-to-elucidate-mechanical-modulation-of-stem-cell-niche-quiescence
#20
Nicole Y C Yu, Connor A O'Brien, Iveta Slapetova, Renee M Whan, Melissa L Knothe Tate
The periosteum, a composite cellular connective tissue, bounds all nonarticular bone surfaces. Like Velcro, collagenous Sharpey's fibers anchor the periosteum in a prestressed state to the underlying bone. The periosteum provides a niche for mesenchymal stem cells. Periosteal lifting, as well as injury, causes cells residing in the periosteum (PDCs) to change from an immobile, quiescent state to a mobile, active state. The physical cues that activate PDCs to home to and heal injured areas remain a conundrum...
January 2017: Stem Cells Translational Medicine
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