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https://www.readbyqxmd.com/read/28535605/ultrasonography-of-the-ankle-joint
#1
Jung Won Park, Sun Joo Lee, Hye Jung Choo, Sung Kwan Kim, Heui-Chul Gwak, Sung-Moon Lee
Ankle disorders are a relatively common pathological condition, and ankle injuries account for Epub ahead of print approximately 14% of sports-related orthopedic emergency visits. Various imaging modalities can be used to make a diagnosis in cases of ankle pain; however, ultrasound (US) has several benefits for the evaluation of ankle pain, especially in the tendons, ligaments, and nerves of the ankle. The purpose of this article is to review the common causes of ankle pathology, with particular reference to US features...
April 5, 2017: Ultrasonography
https://www.readbyqxmd.com/read/28535554/anesthetic-considerations-and-perioperative-management-of-spinal-cord-stimulators-literature-review-and-initial-recommendations
#2
Michael E Harned, Brandon Gish, Allison Zuelzer, Jay S Grider
BACKGROUND: Patients with implanted spinal cord stimulators (SCS) present to the anesthesia care team for management at many different points along the care continuum. Currently, the literature is sparse on the perioperative management. What is available is confusing; monopolar electrocautery is contraindicated but often used, full body magnetic resonance imaging (MRI) is safe with particular systems but with other manufactures only head and specific extremities exams are safe. Moreover, there are anesthetizing locations outside of the operating room where implanted SCS can interact with surrounding medical equipment and pose significant risk to patient and device...
May 2017: Pain Physician
https://www.readbyqxmd.com/read/28535341/fully-stretchable-optoelectronic-sensors-based-on-colloidal-quantum-dots-for-sensing-photoplethysmographic-signals
#3
Tae-Ho Kim, Chang-Seok Lee, Sangwon Kim, Jaehyun Hur, Sangmin Lee, Keun Wook Shin, Young-Zoon Yoon, Moon Kee Choi, Jiwoong Yang, Dae-Hyeong Kim, Taeghwan Hyeon, Seongjun Park, Sungwoo Hwang
Flexible and stretchable optoelectronic devices can be potentially applied in displays, biosensors, biomedicine, robotics, and energy generation. The use of nanomaterials with superior optical properties such as quantum dots (QDs) is important in the realization of wearable displays and biomedical devices, but specific structural design as well as selection of materials should preferentially accompany this technology to realize stretchable forms of these devices. Here, we report stretchable optoelectronic sensors manufactured using colloidal QDs and integrated with elastomeric substrates, whose optoelectronic properties are stable under various deformations...
May 23, 2017: ACS Nano
https://www.readbyqxmd.com/read/28534907/inkjet-printed-highly-transparent-and-flexible-graphene-micro-supercapacitors
#4
Szymon Sollami Delekta, Anderson D Smith, Jiantong Li, Mikael Östling
Modern energy storage devices for portable and wearable technologies must fulfill a number of requirements, such as small size, flexibility, thinness, reliability, transparency, manufacturing simplicity and performance, in order to be competitive in an ever expanding market. To this end, a comprehensive inkjet printing process is developed for the scalable and low-cost fabrication of transparent and flexible micro-supercapacitors. These solid-state devices, with printed thin films of graphene flakes as interdigitated electrodes, exhibit excellent performance versus transparency (ranging from a single-electrode areal capacitance of 16 μF cm(-2) at transmittance of 90% to a capacitance of 99 μF cm(-2) at transmittance of 71%)...
May 23, 2017: Nanoscale
https://www.readbyqxmd.com/read/28534832/the-boom-in-3d-printed-sensor-technology
#5
REVIEW
Yuanyuan Xu, Xiaoyue Wu, Xiao Guo, Bin Kong, Min Zhang, Xiang Qian, Shengli Mi, Wei Sun
Future sensing applications will include high-performance features, such as toxin detection, real-time monitoring of physiological events, advanced diagnostics, and connected feedback. However, such multi-functional sensors require advancements in sensitivity, specificity, and throughput with the simultaneous delivery of multiple detection in a short time. Recent advances in 3D printing and electronics have brought us closer to sensors with multiplex advantages, and additive manufacturing approaches offer a new scope for sensor fabrication...
May 19, 2017: Sensors
https://www.readbyqxmd.com/read/28534721/evaluation-of-3d-additively-manufactured-canine-brain-models-for-teaching-veterinary-neuroanatomy
#6
Regina M Schoenfeld-Tacher, Timothy J Horn, Tyler A Scheviak, Kenneth D Royal, Lola C Hudson
Physical specimens are essential to the teaching of veterinary anatomy. While fresh and fixed cadavers have long been the medium of choice, plastinated specimens have gained widespread acceptance as adjuncts to dissection materials. Even though the plastination process increases the durability of specimens, these are still derived from animal tissues and they require periodic replacement if used by students on a regular basis. This study investigated the use of three-dimensional additively manufactured (3D AM) models (colloquially referred to as 3D-printed models) of the canine brain as a replacement for plastinated or formalin-fixed brains...
May 23, 2017: Journal of Veterinary Medical Education
https://www.readbyqxmd.com/read/28534614/functional-nanoclay-suspension-for-printing-then-solidification-of-liquid-materials
#7
Yifei Jin, Ashley M Compaan, Wenxuan Chai, Yong Huang
Additive manufacturing (AM) enables the freeform fabrication of complex structures from various build materials. The objective of this study is to develop a novel Laponite nanoclay-enabled "printing-then-solidification" additive manufacturing approach to extrude complex three-dimensional (3D) structures made of various liquid build materials. Laponite, a member of the smectite mineral family, is investigated to serve as a yield-stress support bath material for the extrusion printing of liquid build materials...
May 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28534345/korean-version-self-testing-application-for-reading-speed
#8
Soolienah Rhiu, Moses Kim, Jae Hyung Kim, Hye Jin Lee, Tae Hyung Lim
PURPOSE: This study introduces a reading chart application for the iPad tablet in the Korean language and investigates the reading speed in a normal-sighted population according to age group. METHODS: Sixty-three Korean sentences were selected from textbooks for second grade elementary school students. A commonly used typeface in everyday printed material, "BatangChe," was used. Letter size was presented in logarithm of the minimum angle of resolution (logMAR) 0...
May 12, 2017: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/28534297/single-frequency-impedance-analysis-on-reduced-graphene-oxide-screen-printed-electrode-for-biomolecular-detection
#9
Rajesh, Shobhita Singal, Ravinder K Kotnala
A biofunctionalized reduced graphene oxide (rGO)-modified screen-printed carbon electrode (SPCE) was constructed as an immunosensor for C-reactive protein (CRP) detection, a biomarker released in early stage acute myocardial infarction. A different approach of single frequency analysis (SFA) study was utilized for the biomolecular sensing, by monitoring the response in phase angle changes obtained at an optimized frequency resulting from antigen-antibody interactions. A set of measurements were carried out to optimize a frequency where a maximum change in phase angle was observed, and in this case, we found it at around 10 Hz...
May 22, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28532734/a-family-centered-intervention-for-the-transition-to-living-with-multiple-myeloma-as-a-chronic-illness-a-pilot-study
#10
Susan R Mazanec, Sarah Miano, Linda Baer, Erica L Campagnaro, Abdus Sattar, Barbara J Daly
Patients with multiple myeloma and their family caregivers must master self-management tasks related not only to the disease and treatment, but also associated with transitioning to living with chronic illness. The aim of this study was to assess the feasibility, acceptability, safety, and fidelity of an intervention that had a psychoeducational approach and included a low-impact, home-based walking activity. A secondary aim was to obtain preliminary data of the effect of the intervention, as compared to an attention control group, on anxiety, activation for self-management, fatigue, depression and health-related quality of life (HRQOL)...
June 2017: Applied Nursing Research: ANR
https://www.readbyqxmd.com/read/28532272/print-or-pixel
#11
Riley H Lunn
No abstract text is available yet for this article.
May 22, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28531970/ultrasensitive-cholesterol-biosensor-based-on-enzymatic-silver-deposition-on-gold-nanoparticles-modified-screen-printed-carbon-electrode
#12
Yong Huang, Lijie Cui, Yewei Xue, Songbai Zhang, Nixuan Zhu, Jintao Liang, Guiyin Li
Cholesterol is one of the essential structural constituents of cell membranes. Determination of cholesterol is of great importance in clinical analysis because the level of cholesterol in serum is an indicator in the diagnosis and prevention of heart diseases. In this work, a simple and ultrasensitive cholesterol biosensor based on enzymatic silver deposition was designed by immobilizing cholesterol oxidase (CHOD) and cholesterol esterase (CHER) onto the surface of gold nanoparticles (Au NPs) modified screen-printed carbon electrode (SPE)...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531136/a-stretchable-electromagnetic-absorber-fabricated-using-screen-printing-technology
#13
Heijun Jeong, Sungjoon Lim
A stretchable electromagnetic absorber fabricated using screen printing technology is proposed in this paper. We used a polydimethylsiloxane (PDMS) substrate to fabricate the stretchable absorber since PDMS exhibits good dielectric properties, flexibility, and restoring capabilities. DuPont PE872 (DuPont, Wilmington, CT, USA), a stretchable silver conductive ink, was used for the screen printing technique. The reflection coefficient of the absorber was measured using a vector network analyzer and a waveguide...
May 21, 2017: Sensors
https://www.readbyqxmd.com/read/28530492/3d-printing-in-liver-surgery-a-systematic-review
#14
Jan Sylwester Witowski, Jasamine Coles-Black, Tomasz Zbigniew Zuzak, Michał Pędziwiatr, Jason Chuen, Piotr Major, Andrzej Budzyński
BACKGROUND: Rapid growth of three-dimensional (3D) printing in recent years has led to new applications of this technology across all medical fields. This review article presents a broad range of examples on how 3D printing is facilitating liver surgery, including models for preoperative planning, education, and simulation. MATERIALS AND METHODS: We have performed an extensive search of the medical databases Ovid/MEDLINE and PubMed/EMBASE and screened articles fitting the scope of review, following previously established exclusion criteria...
May 22, 2017: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
https://www.readbyqxmd.com/read/28530394/electrogeneration-of-gold-nanoparticles-on-porous-carbon-paper-based-electrodes-and-application-to-inorganic-arsenic-analysis-in-white-wines-by-chronoamperometric-stripping
#15
Estefanía Nunez-Bajo, Maria Carmen Blanco-López, Agustin Costa-García, M Teresa Fernández-Abedul
This paper describes the development of simple, sustainable and low-cost strategies of signal enhancement on paper-based carbon platforms through gold nanoparticles electrogenerated from small volumes of tetrachloroauric acid solutions. Carbon ink is deposited in a hydrophilic working area of the paper delimited with hydrophobic wax. This maskless procedure is fast and cuts down ink waste. The connection of this working electrode to the potentiostat is ensured with the use of screen-printed electrodes (SPEs)...
May 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28530385/polymeric-3d-printed-functional-microcantilevers-for-biosensing-applications
#16
Stefano Stassi, Erika Fantino, Roberta Calmo, Annalisa Chiappone, Matteo Gillono, Davide Scaiola, Candido Fabrizio Pirri, Carlo Ricciardi, Alessandro Chiado', Ignazio Roppolo
The present work shows for the first time the production of mass sensitive polymeric biosensors by 3D printing technology with intrinsic functionalities. We demonstrate the feasibility of mass sensitive biosensors in the form of microcantilever in a one-step printing process, using acrylic acid as functional co-monomer for introducing a controlled amount of functional groups that can covalently immobilize the biomolecules onto the polymer. The effectiveness of the application of 3D printed microcantilevers as biosensors is then demonstrated with their implementation in a standard immunoassay protocol...
May 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28530209/reproducible-3d-printed-head-tanks-for-electrical-impedance-tomography-with-realistic-shape-and-conductivity-distribution
#17
James Avery, Kirill Aristovich, Barney Low, David Holder
OBJECTIVE: Electrical impedance tomography (EIT) has many promising applications in brain injury monitoring. To evaluate both instrumentation and reconstruction algorithms, experiments are first performed in head tanks. Existing methods, whilst accurate, produce a discontinuous conductivity, and are often made by hand, making it hard for other researchers to replicate. APPROACH: We have developed a method for constructing head tanks directly in a 3D printer. Conductivity was controlled through perforations in the skull surface, which allow for saline to pass through...
May 22, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28530207/fabrication-of-biomimetic-bone-grafts-with-multi-material-3d-printing
#18
Nicholas Sears, Prachi Dhavalikar, Michael Whitely, Elizabeth Cosgriff-Hernandez
Extrusion deposition is a versatile method for the 3D printing of biomaterials such as hydrogels, ceramics, and suspensions. Recently, a new class of emulsion inks were developed that can be used to create tunable, hierarchically porous materials with a cure-on-dispense method. Propylene fumarate dimethacrylate (PFDMA) was selected to fabricate bone grafts using this technology due to its established biocompatibility, osteoconductivity, and good compressive properties. Scaffolds fabricated from PFDMA emulsion inks displayed compressive modulus and yield strength of approximately 15 and 1 MPa, respectively...
May 22, 2017: Biofabrication
https://www.readbyqxmd.com/read/28530131/a-novel-combination-of-a-polycaprolactone-fumarate-pclf-scaffold-with-polyethylene-terephthalate-pet-sutures-for-intra-articular-ligament-regeneration
#19
Joshua Parry, Eric R Wagner, Peter Kok, Mahrokh Dadsetan, Michael J Yaszemski, Andre J van Wijnen, Sanjeev Kakar
Intra-articular ligamentous injuries are typically unrepairable and have limited outcomes after graft reconstruction. A combination of porous polycaprolactone fumarate (PCLF) scaffolds with polyethylene terephthalate (PET) sutures was developed with the goal of regenerating intra-articular ligaments. Scaffolds were fabricated by injecting PCLF over 3D-printed molds containing two strands of PET suture down its central pore followed by crosslinking. Scaffolds were seeded with human mesenchymal stem cells (MSCs) from adipose tissue...
May 20, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28530091/3d-bioprinting-of-highly-thixotropic-alginate-methylcellulose-hydrogel-with-strong-interface-bonding
#20
Huijun Li, Yu Jun Tan, Kah Fai Leong, Lin Li
A robust alginate/methylcellulose (Alg/MC) blend hydrogel, with a strategy to improve adhesion between printed layers, has been fabricated for the first time for 3D bioprinting. The optimized Alg/MC blend hydrogel exhibits highly thixotropic property, great extrudability and stackability. With treatment by a trisodium citrate (TSC) solution, the interfacial bonding between printed layers is significantly improved. The TSC solution acts as a chelating agent to remove the superficial calcium ions at each layer...
May 22, 2017: ACS Applied Materials & Interfaces
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