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https://www.readbyqxmd.com/read/28102958/sliding-window-prior-data-assisted-compressed-sensing-for-mri-tracking-of-lung-tumors
#1
Eugene Yip, Jihyun Yun, Keith Wachowicz, Zsolt Gabos, Satyapal Rathee, B G Fallone
PURPOSE: Hybrid magnetic resonance imaging and radiation therapy devices are capable of imaging in real-time to track intrafractional lung tumor motion during radiotherapy. Highly accelerated magnetic resonance (MR) imaging methods can potentially reduce system delay time and/or improves imaging spatial resolution, and provide flexibility in imaging parameters. Prior Data Assisted Compressed Sensing (PDACS) has previously been proposed as an acceleration method that combines the advantages of 2D compressed sensing and the KEYHOLE view-sharing technique...
January 2017: Medical Physics
https://www.readbyqxmd.com/read/28102833/a-multimodal-approach-to-estimating-vigilance-using-eeg-and-forehead-eog
#2
Wei-Long Zheng, Baoliang Lu
OBJECTIVE: Covert aspects of ongoing user mental states provide key context information for user-aware human computer interactions. In this paper, we focus on the problem of estimating the vigilance of users using EEG and EOG signals. APPROACH: The PERCLOS index as vigilance annotation is obtained from eye tracking glasses. To improve the feasibility and wearability of vigilance estimation devices for real-world applications, we adopt a novel electrode placement for forehead EOG and extract various eye movement features, which contain the principal information of traditional EOG...
January 19, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28102576/printable-functional-chips-based-on-nanoparticle-assembly
#3
REVIEW
Yu Huang, Wenbo Li, Meng Qin, Haihua Zhou, Xingye Zhang, Fengyu Li, Yanlin Song
With facile manufacturability and modifiability, impressive nanoparticles (NPs) assembly applications were performed for functional patterned devices, which have attracted booming research attention due to their increasing applications in high-performance optical/electrical devices for sensing, electronics, displays, and catalysis. By virtue of easy and direct fabrication to desired patterns, high throughput, and low cost, NPs assembly printing is one of the most promising candidates for the manufacturing of functional micro-chips...
January 2017: Small
https://www.readbyqxmd.com/read/28102475/prospective-evaluation-of-a-bivalirudin-to-warfarin-transition-nomogram
#4
Benjamin Hohlfelder, Katelyn W Sylvester, Jessica Rimsans, David DeiCicchi, Jean M Connors
Bivalirudin may cause a falsely prolonged international normalized ratio (INR) that complicates the discontinuation of bivalirudin when used as a bridge to warfarin. To prospectively validate our novel bivalirudin to warfarin transition nomogram, adult patients who received bivalirudin as a bridge to warfarin between July 2015 and June 2016 were prospectively evaluated, utilizing our predictive nomogram. The major outcome of our analysis was the correlation between the predicted change in INR upon bivalirudin discontinuation based on the nomogram, and the actual change in INR upon bivalirudin discontinuation...
January 19, 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28102306/high-speed-terahertz-modulator-on-the-chip-based-on-tunable-terahertz-slot-waveguide
#5
P K Singh, S Sonkusale
This paper presents an on-chip device that can perform gigahertz-rate amplitude modulation and switching of broadband terahertz electromagnetic waves. The operation of the device is based on the interaction of confined THz waves in a novel slot waveguide with an electronically tunable two dimensional electron gas (2DEG) that controls the loss of the THz wave propagating through this waveguide. A prototype device is fabricated which shows THz intensity modulation of 96% at 0.25 THz carrier frequency with low insertion loss and device length as small as 100 microns...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28100568/stentriever-thrombectomy-with-distal-protection-device-for-carotid-free-floating-thrombus-a-technical-case-report
#6
Suresh Giragani, Ankit Balani, Vikas Agrawal
We report the clinical details, imaging findings and management of a 45-year-old man who presented with recurrent transient ischemic attacks due to carotid free floating thrombus. Free floating thrombus of the carotid artery is a very rare condition with a high risk of distal embolic shower. The optimal treatment options are debatable and include medical management, surgical thrombectomy and endovascular thrombectomy. We describe the use of a stentriever with filter protection in the management of carotid free floating thrombus as a novel treatment option...
January 18, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28100202/a-novel-reflex-cough-testing-device
#7
Kazunori Fujiwara, Katsuyuki Kawamoto, Yoko Shimizu, Takahiro Fukuhara, Satoshi Koyama, Hideyuki Kataoka, Hiroya Kitano, Hiromi Takeuchi
BACKGROUND: The reflex cough test is useful for detecting silent aspiration, a risk factor for aspiration pneumonia. However, assessing the risk of aspiration pneumonia requires measuring not only the cough reflex but also cough strength. Currently, no reflex cough testing device is available that can directly measure reflex cough strength. We therefore developed a new testing device that can easily and simultaneously measure cough strength and the time until the cough reflex, and verified whether screening with this new instrument is feasible for evaluating the risk of aspiration pneumonia...
January 18, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28099195/systolic-peak-foot-to-apex-time-interval-a-novel-oscillometric-technique-for-systolic-blood-pressure-measurement
#8
Amir M Benmira, Antonia Perez-Martin, Sarah Coudray, Iris Schuster, Isabelle Aichoun, Jérémy Laurent, Fethi Bereski-Reguig, Michel Dauzat
BACKGROUND: Noninvasive blood pressure (BP) measurement is essential for the study of human physiology but automatic oscillometric devices only estimate SBP and DBP using various, undisclosed algorithms, precluding standardization and interchangeability. We propose a novel approach by tracking, during pneumatic cuff deflation, the time interval from the foot to the apex of the systolic peak of the oscillometric signal, which reaches a maximum concomitant with the first Korotkoff sound...
January 17, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28098971/photodiode-response-in-a-ch3nh3pbi3-ch3nh3sni3-heterojunction
#9
Massimo Spina, Laszlo Mihaly, Karoly Holczer, Bálint Náfrádi, Andrea Pisoni, László Forró, Endre Horváth
Here we report another surprising feature of this material family, the photo-tunability of the diode response of a heterojunction made of CH3NH3PbI3 and its close relative, CH3NH3SnI3. In the dark state the device behaves as a diode, with the Sn homologue acting as the "p" side. The junction is extremely sensitive to illumination. A complete reversal of the diode polarity, the first observation of its kind, is seen when the junction is exposed to red laser light of 25 mW/cm(2) or larger power density. This finding opens up the possibility for a novel class of opto-electronic devices...
January 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28098844/modeling-and-calibration-of-a-novel-one-mirror-galvanometric-laser-scanner
#10
Chengyi Yu, Xiaobo Chen, Juntong Xi
A laser stripe sensor has limited application when a point cloud of geometric samples on the surface of the object needs to be collected, so a galvanometric laser scanner is designed by using a one-mirror galvanometer element as its mechanical device to drive the laser stripe to sweep along the object. A novel mathematical model is derived for the proposed galvanometer laser scanner without any position assumptions and then a model-driven calibration procedure is proposed. Compared with available model-driven approaches, the influence of machining and assembly errors is considered in the proposed model...
January 15, 2017: Sensors
https://www.readbyqxmd.com/read/28097928/validity-and-reliability-of-a-novel-iphone-app-for-the-measurement-of-barbell-velocity-and-1rm-on-the-bench-press-exercise
#11
Carlos Balsalobre-Fernández, David Marchante, Mario Muñoz-López, Sergio L Jiménez
The purpose of this study was to analyse the validity and reliability of a novel iPhone app (named: PowerLift) for the measurement of mean velocity on the bench-press exercise. Additionally, the accuracy of the estimation of the 1-Repetition maximum (1RM) using the load-velocity relationship was tested. To do this, 10 powerlifters (Mean (SD): age = 26.5 ± 6.5 years; bench press 1RM · kg(-1) = 1.34 ± 0.25) completed an incremental test on the bench-press exercise with 5 different loads (75-100% 1RM), while the mean velocity of the barbell was registered using a linear transducer (LT) and Powerlift...
January 18, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28097597/self-powered-active-sensor-with-concentric-topography-of-piezoelectric-fibers
#12
Yiin Kuen Fuh, Zih Ming Huang, Bo Sheng Wang, Shan Chien Li
In this study, we demonstrated a flexible and self-powered sensor based on piezoelectric fibers in the diameter range of nano- and micro-scales. Our work is distinctively different from previous electrospinning research; we fabricated this apparatus precisely via near-field electrospinning which has a spectacular performance to harvest mechanical deformation in arbitrary direction and a novel concentrically circular topography. There are many piezoelectric devices based on electrospinning polymeric fibers. However, the fibers were mostly patterned in parallel lines and they could be actuated in limited direction only...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28096491/expressing-the-geobacter-metallireducens-pila-in-geobacter-sulfurreducens-yields-pili-with-exceptional-conductivity
#13
Yang Tan, Ramesh Y Adhikari, Nikhil S Malvankar, Joy E Ward, Trevor L Woodard, Kelly P Nevin, Derek R Lovley
: The electrically conductive pili (e-pili) of Geobacter sulfurreducens serve as a model for a novel strategy for long-range extracellular electron transfer. e-pili are also a new class of bioelectronic materials. However, the only other Geobacter pili previously studied, which were from G. uraniireducens, were poorly conductive. In order to obtain more information on the range of pili conductivities in Geobacter species, the pili of G. metallireducens were investigated. Heterologously expressing the PilA gene of G...
January 17, 2017: MBio
https://www.readbyqxmd.com/read/28096478/demographic-procedural-and-30-day-safety-results-from-the-web-intra-saccular-therapy-study-web-it
#14
David Fiorella, Andrew Molyneux, Alexander Coon, Istvan Szikora, Isil Saatci, Feyyaz Baltacioglu, Ali Sultan, Adam Arthur
INTRODUCTION: The Woven EndoBridge (WEB) represents a novel intrasaccular therapeutic option for the treatment of intracranial wide-necked bifurcation aneurysms (WNBAs). The WEB-IT Study is a pivotal Investigational Device Exemption (IDE) study to determine the safety and effectiveness of the WEB device for the treatment of WNBAs located in the anterior and posterior intracranial circulations. We present the patient demographics, procedural characteristics, and 30-day adverse event data for the US WEB-IT study...
January 17, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28095741/pullout-performance-comparison-of-novel-expandable-pedicle-screw-with-expandable-poly-ether-ether-ketone-shells-and-cement-augmented-pedicle-screws
#15
Mehmet Fatih Aycan, Tolga Tolunay, Teyfik Demir, Mesut Emre Yaman, Yusuf Usta
Aim of this study is to assess the pullout performance of various pedicle screws in different test materials. Polyurethane foams (Grade 10 and Grade 40) produced in laboratory and bovine vertebrae were instrumented with normal, cannulated (cemented), novel expandable and normal (cemented) pedicle screws. Test samples were prepared according to the ASTM F543 standard testing protocols and surgical guidelines. To examine the screw placement and cement distribution, anteriosuperior and oblique radiographs were taken from each sample after insertion process was completed...
January 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28095543/clinical-evaluation-of-hair-removal-using-an-810-nm-diode-laser-with-a-novel-scanning-device
#16
Erin Courtney, David J Goldberg
INTRODUCTION: Diode lasers are often considered as the gold standard preference for hair removal due to the deep penetration and ef- fective targeting of the hair follicle. A wide variety of diode lasers are available, which can differ in terms of their parameters (such as fluence, pulse duration, repetition rate, scanner, and cooling). OBJECTIVE: The objective of the study was to evaluate the safety and ef cacy of hair removal with an 810 nm novel scanning diode laser, up to six months after last treatment...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095176/a-flexible-workflow-for-automated-bioluminescent-kinase-selectivity-profiling
#17
Tracy Worzella, Matt Butzler, Jacquelyn Hennek, Seth Hanson, Laura Simdon, Said Goueli, Cris Cowan, Hicham Zegzouti
Kinase profiling during drug discovery is a necessary process to confirm inhibitor selectivity and assess off-target activities. However, cost and logistical limitations prevent profiling activities from being performed in-house. We describe the development of an automated and flexible kinase profiling workflow that combines ready-to-use kinase enzymes and substrates in convenient eight-tube strips, a bench-top liquid handling device, ADP-Glo Kinase Assay (Promega, Madison, WI) technology to quantify enzyme activity, and a multimode detection instrument...
November 1, 2016: Journal of Laboratory Automation
https://www.readbyqxmd.com/read/28094991/polarization-mediated-modulation-of-electronic-and-transport-properties-of-hybrid-mos2-batio3-srruo3-tunnel-junctions
#18
Tao Li, Pankaj Sharma, Alexey Lipatov, Hyungwoo Lee, Jung-Woo Lee, Mikhail Y Zhuravlev, Tula R Paudel, Yuri A Genenko, Chang-Beom Eom, Evgeny Y Tsymbal, Alexander Sinitskii, Alexei Gruverman
Hybrid structures composed of ferroelectric thin films and functional two-dimensional (2D) materials may exhibit unique characteristics and reveal new phenomena due to the cross-interface coupling between their intrinsic properties. In this report, we demonstrate a symbiotic interplay between spontaneous polarization of the ultrathin BaTiO3 ferroelectric film and conductivity of the adjacent molybdenum disulfide (MoS2) layer, a 2D narrow-band semiconductor. Polarization-induced modulation of the electronic properties of MoS2 results in a giant tunneling electroresistance effect in the hybrid MoS2/BaTiO3/SrRuO3 ferroelectric tunnel junctions (FTJs) with an OFF/ON resistance ratio as high as 104 - a 50-fold increase in comparison with the same type of FTJs with metal electrodes...
January 17, 2017: Nano Letters
https://www.readbyqxmd.com/read/28094957/spatially-resolved-imaging-on-photocarrier-generations-and-band-alignments-at-perovskite-pbi2-hetero-interfaces-of-perovskite-solar-cells-by-light-modulated-scanning-tunneling-microscopy
#19
Min-Chuan Shih, Shao-Sian Li, Cheng-Hua Hsieh, Ying-Chiao Wang, Hung-Duen Yang, Ya-Ping Chiu, Chia-Seng Chang, Chun-Wei Chen
The presence of the PbI2 passivation layers at perovskite crystal grains has been found to con-siderably affect the charge carrier transport behaviors and device performance of perovskite so-lar cells. This work demonstrates the application of a novel light-modulated scanning tunneling microscopy (LM-STM) technique to reveal the interfacial electronic structures at the hetero-interfaces between CH3NH3PbI3 perovskite crystals and PbI2 passivation layer of individual perovskite grains under light illumination...
January 17, 2017: Nano Letters
https://www.readbyqxmd.com/read/28094138/new-normoxic-n-hydroxymethyl-acrylamide-based-polymer-gel-for-3d-dosimetry-in-radiation-therapy
#20
Khalid A Rabaeh, Ahmed A Basfar, Akram A Almousa, Slobodan Devic, Belal Moftah
A novel composition of normoxic polymer gel dosimeters based on radiation-induced polymerization of N-(Hydroxymethyl)acrylamide (NHMA) is introduced in this study for 3D dosimetry for Quality Assurance (QA) in radiation therapy. Dosimeters were irradiated by 6, 10 and 18MV photon beams of a medical linear accelerator at various dose rates to doses of up to 20Gy. The dose response of polymer gel dosimeters was studied using nuclear magnetic resonance (NMR) spin-spin relaxation rate (R2) of hydrogen protons within the water molecule...
January 13, 2017: Physica Medica: PM
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