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https://www.readbyqxmd.com/read/28647609/a-machine-learning-approach-for-automated-wide-range-frequency-tagging-analysis-in-embedded-neuromonitoring-systems
#1
Fabio Montagna, Marco Buiatti, Simone Benatti, Davide Rossi, Elisabetta Farella, Luca Benini
EEG is a standard non-invasive technique used in neural disease diagnostics and neurosciences. Frequency-tagging is an increasingly popular experimental paradigm that efficiently tests brain function by measuring EEG responses to periodic stimulation. Recently, frequency-tagging paradigms have proven successful with low stimulation frequencies (0.5 - 6 Hz), but the EEG signal is intrinsically noisy in this frequency range, requiring heavy signal processing and significant human intervention for response estimation...
June 21, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28644620/nanofibrous-smart-fabrics-from-twisted-yarns-of-electrospun-piezo-polymer
#2
Enlong Yang, Zhe Xu, Lucas Chur, Ali Behroozfar, Mahmoud Baniasadi, Salvador Moreno, Jiacheng Huang, Jules Gilligan, Majid Minary-Jolandan
Smart textiles are envisioned to make a paradigm shift in wearable technologies to directly impart functionality into the fibers rather than integrating sensors and electronics onto conformal substrates or skin in wearable devices. Among smart materials, piezoelectric fabrics have not been widely reported, yet. Piezoelectric smart fabrics can be used for mechanical energy harvesting, for thermal energy harvesting through the pyroelectric effect, for ferroelectric applications, as pressure and force sensors, for motion detection, and for ultrasonic sensing...
June 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28636564/radiation-dosimetry-in-magnetic-fields-with-farmer-type-ionization-chambers-determination-of-magnetic-field-correction-factors-for-different-magnetic-field-strengths-and-field-orientations
#3
Claudia Katharina Spindeldreier, Oliver Schrenk, Anna Bakenecker, Iwan Kawrakow, Lucas Norberto Burigo, Christian P Karger, Steffen Greilich, Asja Pfaffenberger
The aim of this work was to determine magnetic field correction factors that are needed for dosimetry in hybrid devices for MR-guided radiotherapy for Farmer-type ionization chambers for different magnetic field strengths and field orientations. The response of six custom-built Farmer-type chambers irradiated at a 6 MV linac was measured in a water tank positioned in a magnet with magnetic field strengths between 0.0 T and 1.1 T. Chamber axis, beam and magnetic field were perpendicular to each other and both magnetic field directions were investigated...
June 21, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28627859/use-of-dynamic-movement-orthoses-to-improve-gait-stability-and-trunk-control-in-ataxic-patients
#4
Mariano Serrao, Carlo Casali, Alberto Ranavolo, Silvia Mari, Carmela Conte, Giorgia Chini, Luca Leonardi, Gianluca Coppola, Cherubino DI Lorenzo, Mahmoud Harfoush, Luca Padua, Francesco Pierelli
BACKGROUND: Patients with cerebellar ataxia show increased upper body movements, which have an impact on balance and walking. AIM: In this study, we investigated the effect of using dynamic movement orthoses (DMO), designed as elastic suits, on trunk motion and gait parameters. DESIGN: A longitudinal uncontrolled study. SETTING: Rehabilitative outpatient unit. POPULATION: Eleven patients (seven men, four women; mean age of 49...
June 19, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28625931/overview-of-the-risk-areas-associated-with-care-in-nursing-homes
#5
Delphine Teigné, Marion Lucas, Brice Leclère, Leila Moret, Noémie Terrien
As the number of dependant elderly people rises, the place occupied by nursing homes in the French health care system becomes more and more important, and the question of resident safety is more significant than ever. A transfer of the notions developed for hospitals is useful but insufficient, as they mainly focus on the technical facet of care. In order to propose a wider view of risk management in nursing homes, we reviewed the French medical literature published between 2005 and 2016 in search of articles about adverse events related to health care in French nursing homes...
June 1, 2017: Gériatrie et Psychologie Neuropsychiatrie du Vieillissement
https://www.readbyqxmd.com/read/28623262/optofluidic-device-for-the-quantification-of-circulating-tumor-cells-in-breast-cancer
#6
Eric Pedrol, Manuel Garcia-Algar, Jaume Massons, Moritz Nazarenus, Luca Guerrini, Javier Martínez, Airan Rodenas, Ana Fernandez-Carrascal, Magdalena Aguiló, Laura G Estevez, Isabel Calvo, Ana Olano-Daza, Eduardo Garcia-Rico, Francesc Díaz, Ramon A Alvarez-Puebla
Metastatic cancer patients require a continuous monitoring during the sequential treatment cycles to carefully evaluate their disease evolution. Repetition of biopsies is very invasive and not always feasible. Herein, we design and demonstrate a 3D-flow focusing microfluidic device, where all optics are integrated into the chip, for the fluorescence quantification of CTCs in real samples. To test the chip performance, two cell membrane targets, the epithelial cell adhesion molecule, EpCAM, and the receptor tyrosine-protein kinase, HER2, are selected...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28623261/epitaxially-stabilized-thin-films-of-%C3%AE%C2%B5-fe2o3-001-grown-on-ysz-100
#7
Luca Corbellini, Christian Lacroix, Catalin Harnagea, Andreas Korinek, Gianluigi A Botton, David Ménard, Alain Pignolet
Epsilon ferrite (ε-Fe2O3) is a metastable phase of iron(III) oxide, intermediate between maghemite and hematite. It has recently attracted interest because of its magnetocrystalline anisotropy, which distinguishes it from the other polymorphs, and results in a gigantic coercive field and a natural ferromagnetic resonance frequency in the THz range. Moreover, it possesses a polar crystal structure, making it a potential ferroelectric, hence a potential multiferroic. Due to the need of size confinement to stabilize the metastable phase, ε-Fe2O3 has been synthesized mainly as nanoparticles...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28608325/pulsatile-flow-leads-to-intimal-flap-motion-and-flow-reversal-in-an-in-vitro-model-of-type-b-aortic-dissection
#8
Joav Birjiniuk, Lucas H Timmins, Mark Young, Bradley G Leshnower, John N Oshinski, David N Ku, Ravi K Veeraswamy
Understanding of the hemodynamics of Type B aortic dissection may improve outcomes by informing upon patient selection, device design, and deployment strategies. This project characterized changes to aortic hemodynamics as the result of dissection. We hypothesized that dissection would lead to elevated flow reversal and disrupted pulsatile flow patterns in the aorta that can be detected and quantified by non-invasive magnetic resonance imaging. Flexible, anatomic models of both normal aorta and dissected aorta, with a mobile intimal flap containing entry and exit tears, were perfused with a physiologic pulsatile waveform...
June 12, 2017: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/28606886/early-anticoagulation-drug-regimens-after-watchman-left-atrial-appendage-closure-safety-and-efficacy
#9
Martin W Bergmann, Timothy R Betts, Horst Sievert, Boris Schmidt, Evgeny Pokushalov, Stephan Kische, Thomas Schmitz, Felix Meincke, Kenneth M Stein, Lucas V Boersma, Hüseyin Ince
AIMS: While LAA closure has recently been incorporated in both European and US guidelines for stroke prevention, uncertainties regarding post-procedural drug therapy so far limit its adoption. METHODS AND RESULTS: 1005 patients were implanted with a WATCHMAN device in the prospective EWOLUTION study at 47 centers. 73.5% of the patients were deemed contraindicated for long-term OAC therapy. Here we report on 3-months data including the first follow-up TOE exam for 94% of the study population...
June 13, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28604140/is-the-bipolar-vessel-sealer-device-an-effective-tool-in-robotic-surgery-a-retrospective-analysis-of-our-experience-and-a-meta-analysis-of-the-literature-about-different-robotic-procedures-by-investigating-operative-data-and-post-operative-course
#10
Monica Ortenzi, Roberto Ghiselli, Maddalena Baldarelli, Luca Cardinali, Mario Guerrieri
BACKGROUND: The latest robotic bipolar vessel sealing tools have been described to be effective allowing to perform procedures with reduced blood loss and shorter operative times. The aim of this study was to assess the efficacy and reliability of these devices applied in different robotic procedures. MATERIAL AND METHODS: All robotic operations, between 2014 and 2016, were performed using the EndoWrist One VesselSealer (EWO, Intuitive Surgical, Sunnyvale, CA), a bipolar fully wristed device...
June 12, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/28597363/a-portable-optical-recording-device-simulating-co2-angiography-for-training-purposes
#11
Ivan Corazza, Lorenzo Casadei, Edoardo Pirazzini, Luca Neri, Romano Zannoli
No abstract text is available yet for this article.
July 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28594654/rationale-study-design-and-pilot-phase-of-the-management-of-antithrombotic-therapy-in-patients-undergoing-electrophysiological-device-surgery-italian-national-multicenter-observational-registry
#12
Valerio Zacà, Marco Breschi, Alberto Mandorli, Luca Panchetti, Giuseppe Ricciardi, Stefano Viani, Pasquale Notarstefano
AIMS: To investigate the different strategies adopted for the management of antithrombotic therapy and the related hemorrhagic and infective complication rates in patients undergoing cardiac implantable electronic devices (CIEDs) surgery in a real-world setting. METHODS: THE Management of AntiThrOMbotic therApy in patients undergoing electrophysiological device surgery: Italian NatiOnal Multicenter Observational REgistry (HEMATOMA NO MORE) is an observational, prospective, multicenter, national cohort study (with a retrospective, multicenter, regional pilot phase) designed to enroll patients with standard indications to CIED implantations/replacements receiving concomitant antithrombotic therapy...
June 7, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28593001/teaching-echoscopy-for-the-early-diagnosis-of-ascites-in-cirrhosis-assessment-of-an-objective-structured-clinical-examination-osce
#13
Salmi Andrea, Lanzani Giovanna, Campagnola Pietro, Frulloni Luca
INTRODUCTION: We assessed the efficacy of a brief, 8-h teaching program, using an objective structured clinical examination (OSCE) for the use of a pocket ultrasound device (echoscope) focused on bed side diagnosis of subclinical ascites in chronic liver disease. PATIENTS AND METHODS: Ten cirrhotic patients, five with subclinical ascites and five without, were selected during ultrasound examination performed with a high performance equipment for screening of hepatocellular carcinoma...
June 2017: Journal of Ultrasound
https://www.readbyqxmd.com/read/28592282/the-role-of-virtual-reality-in-improving-motor-performance-as-revealed-by-eeg-a-randomized-clinical-trial
#14
Rocco Salvatore Calabrò, Antonino Naro, Margherita Russo, Antonino Leo, Rosaria De Luca, Tina Balletta, Antonio Buda, Gianluca La Rosa, Alessia Bramanti, Placido Bramanti
BACKGROUND: Many studies have demonstrated the usefulness of repetitive task practice by using robotic-assisted gait training (RAGT) devices, including Lokomat, for the treatment of lower limb paresis. Virtual reality (VR) has proved to be a valuable tool to improve neurorehabilitation training. The aim of our pilot randomized clinical trial was to understand the neurophysiological basis of motor function recovery induced by the association between RAGT (by using Lokomat device) and VR (an animated avatar in a 2D VR) by studying electroencephalographic (EEG) oscillations...
June 7, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28587141/lem-characterization-of-synthetic-jet-actuators-driven-by-piezoelectric-element-a-review
#15
Matteo Chiatto, Francesco Capuano, Gennaro Coppola, Luigi de Luca
In the last decades, Synthetic jet actuators have gained much interest among the flow control techniques due to their short response time, high jet velocity and absence of traditional piping, which matches the requirements of reduced size and low weight. A synthetic jet is generated by the diaphragm oscillation (generally driven by a piezoelectric element) in a relatively small cavity, producing periodic cavity pressure variations associated with cavity volume changes. The pressured air exhausts through an orifice, converting diaphragm electrodynamic energy into jet kinetic energy...
May 26, 2017: Sensors
https://www.readbyqxmd.com/read/28577840/efficacy-and-safety-of-left-atrial-appendage-closure-with-watchman-in-patients-with-or-without-contraindication-to-oral-anticoagulation-1-year-follow-up-outcome-data-of-the-ewolution-trial
#16
Lucas V Boersma, Hueseyin Ince, Stephan Kische, Evgeny Pokushalov, Thomas Schmitz, Boris Schmidt, Tommaso Gori, Felix Meincke, Alexey Vladimir Protopopov, Timothy Betts, David Foley, Horst Sievert, Patrizio Mazzone, Tom De Potter, Elisa Vireca, Kenneth Stein, Martin W Bergmann
BACKGROUND: Left atrial appendage (LAA) occlusion with WATCHMAN has emerged as viable alternative to vitamin K antagonists in randomized controlled trials. OBJECTIVE: EWOLUTION was designed to provide data in routine practice from a prospective multicenter registry. METHODS: A total of 1025 patients scheduled for a WATCHMAN implant were prospectively and sequentially enrolled at 47 centers. Indication for LAA closure was based on European Society of Cardiology guidelines...
May 31, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28570546/electrophysiological-analysis-of-human-pluripotent-stem-cell-derived-cardiomyocytes-hpsc-cms-using-multi-electrode-arrays-meas
#17
Luca Sala, Dorien Ward-van Oostwaard, Leon G J Tertoolen, Christine L Mummery, Milena Bellin
Cardiomyocytes can now be derived with high efficiency from both human embryonic and human induced-Pluripotent Stem Cells (hPSC). hPSC-derived cardiomyocytes (hPSC-CMs) are increasingly recognized as having great value for modeling cardiovascular diseases in humans, especially arrhythmia syndromes. They have also demonstrated relevance as in vitro systems for predicting drug responses, which makes them potentially useful for drug-screening and discovery, safety pharmacology and perhaps eventually for personalized medicine...
May 12, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28559495/temporal-trends-in-adverse-events-after-everolimus-eluting-bioresorbable-vascular-scaffold-versus-everolimus-eluting-metallic-stent-implantation-a-meta-analysis-of-randomized-controlled-trials
#18
Rocco A Montone, Giampaolo Niccoli, Federico De Marco, Silvia Minelli, Fabrizio D'Ascenzo, Luca Testa, Francesco Bedogni, Filippo Crea
BACKGROUND: Bioresorbable coronary stents have been introduced into clinical practice to improve the outcomes of patients treated with percutaneous coronary intervention. The everolimus-eluting bioresorbable vascular scaffold (BVS) is the most studied of these stent platforms; however, recent trials comparing BVS with everolimus-eluting metallic stents (EES) raised concerns about BVS safety. We aimed to assess the efficacy and safety of BVS versus EES in patients undergoing percutaneous coronary intervention...
May 30, 2017: Circulation
https://www.readbyqxmd.com/read/28557861/heartmate-3-in-lowest-intermacs-profile-cohort-the-swiss-experience
#19
Piergiorgio Tozzi, Carlo Banfi, Kameran Ahmadov, Roger Hullin, Philippe Meyer, Raphael Giraud, Lucas Liaudet, Fabrizio Gronchi, Christophe Huber, Matthias Kirsch
New generation devices for long-term mechanical circulatory support are centrifugal pumps having fully magnetically levitated rotors to reduce blood trauma. Recently, the novel HeartMate 3 was cleared for clinical application in Switzerland. In two Swiss University Hospitals part of the "Lausanne-Geneva Transplantation Network," 10 consecutive patients in end-stage heart failure received the HeartMate 3. Device implantation criteria were persistent low output syndrome despite optimal medical treatment. The primary end-point of the study was survival or transplantation to 90 days on the device...
May 23, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28554810/limiting-interpedicular-screw-displacement-increases-shear-forces-in-screws-a-finite-element-study
#20
L V P C Lima, Y P Charles, P Rouch, W Skalli
BACKGROUND CONTEXT: Screw loosening has been reported for non-fusion devices. Forces on pedicle screws could be related to kinematic parameters as the interpedicular displacement (ID), which consists of the displacement between superior and inferior screw heads from full extension to full flexion. PURPOSE: To investigate the relationship between ID and screw loosening for different designs of posterior implants using a finite element model. METHODS: An L3-sacrum previously validated spine FE model was used...
May 26, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
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