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https://www.readbyqxmd.com/read/29679136/the-pedicle-instrumentation-and-percutaneous-elevation-pi-pe-a-new-cementless-surgical-technique-in-type-a-post-traumatic-vertebral-fractures
#1
Andrea Piazzolla, Giuseppe Solarino, Davide Bizzoca, Claudia Parato, Gaetano Monteleone, Franca Dicuonzo, Biagio Moretti
PURPOSE: To investigate if bone substitutes are strictly necessary to restore the vertebral body height and improve the clinical outcome, in patients with thoracolumbar or lumbar AO type A post-traumatic vertebral fractures, managed with balloon kyphoplasty combined with posterior screw and rod system. METHODS: 105 patients with post-traumatic thoracolumbar spine fracture were recruited. At baseline, the patients underwent a CT and an MRI of the spine. Clinical evaluation was performed, using the Visual Analog Scale (VAS) and the Oswestry Disability Index (ODI), at baseline, 48 h after surgery, at 3-month follow-up (FU), 6-month FU, 48 h after the instrumentation removal and at 24-month FU...
April 20, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29671444/a-novel-nonlinear-nano-scale-wear-law-for-metallic-brake-pads
#2
Sandeep P Patil, Sri Harsha Chilakamarri, Bernd Markert
In the present work, molecular dynamics simulations were carried out to investigate the temperature distribution as well as the fundamental friction characteristics such as the coefficient of friction and wear in a disc-pad braking system. A wide range of constant velocity loadings was applied on metallic brake pads made of aluminium, copper and iron with different rotating speeds of a diamond-like carbon brake disc. The average temperature of Newtonian atoms and the coefficient of friction of the brake pad were investigated...
April 19, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29671108/comparison-of-pure-lateral-and-oblique-lateral-inter-body-fusion-for-treatment-of-lumbar-degenerative-disk-disease-a-multicentric-cohort-study
#3
Massimo Miscusi, Alessandro Ramieri, Stefano Forcato, Mary Giuffrè, Sokol Trungu, Marco Cimatti, Alessandro Pesce, Pietro Familiari, Amedeo Piazza, Cristina Carnevali, Giuseppe Costanzo, Antonino Raco
PURPOSE: The most effective interbody fusion technique for degenerative disk disease (DDD) is still controversial. The purpose of our study is to compare pure lateral (LLIF) and oblique lateral (OLIF) approaches for the treatment of lumbar DDD from L1-L2 to L4-L5, in terms of clinical and radiological outcomes. MATERIALS AND METHODS: 45 patients underwent lumbar interbody fusion for pure lumbar DDD from  L1-L2 to L4-L5 through LLIF (n = 31, mean age 62.1 years, range 45-78 years) or OLIF (n = 14, mean age 57...
April 18, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29670857/radiomics-evaluation-of-histological-heterogeneity-using-multiscale-textures-derived-from-3d-wavelet-transformation-of-multispectral-images
#4
Ahmad Chaddad, Paul Daniel, Tamim Niazi
Purpose: Colorectal cancer (CRC) is markedly heterogeneous and develops progressively toward malignancy through several stages which include stroma (ST), benign hyperplasia (BH), intraepithelial neoplasia (IN) or precursor cancerous lesion, and carcinoma (CA). Identification of the malignancy stage of CRC pathology tissues (PT) allows the most appropriate therapeutic intervention. Methods: This study investigates multiscale texture features extracted from CRC pathology sections using 3D wavelet transform (3D-WT) filter...
2018: Frontiers in Oncology
https://www.readbyqxmd.com/read/29665761/expert-rater-agreement-and-inter-intrarater-reliability-for-the-furtado-gallagher-computerized-observational-movement-pattern-assessment-system
#5
Ovande Furtado, Jere D Gallagher
Fundamental movement skills (FMS) play a crucial role in a child's motor skill development, as their mastery is related to the acquisition and mastery of specialized sport skills and to a child's general health through the prevention of weight gain and increased level of physical activity. Thus, the accurate and reliable measurement of FMS is of related importance. This article presents the results of two studies intended to assess expert-rater agreement and inter-/intrarater scoring reliability in the administration of a new observational FMS instrument, the Furtado-Gallagher Computerized Observational Movement Pattern Assessment System (FG-COMPASS)...
January 1, 2018: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/29665117/digital-versus-traditional-are-diagnostic-accuracy-rates-similar-for-glass-slides-versus-whole-slide-images-in-a-non-gynaecological-external-quality-assurance-setting
#6
Jennifer Ross, Janelle Greaves, Peter Earls, Boaz Shulruf, Simone L Van Es
BACKGROUND: The Royal College of Pathologists of Australasia Quality Assurance Programs introduced virtual microscopy cases into its cytopathology non-gynaecological program after a short pilot phase, to address the challenges of providing a purely glass slide-based external quality assurance program to multiple participants both locally and internationally. The use of whole slide image (WSI) cases has facilitated a more robust program in relation to standardised material and statistical analysis, with access to a wider variety of specimen types and diagnostic entities...
April 17, 2018: Cytopathology: Official Journal of the British Society for Clinical Cytology
https://www.readbyqxmd.com/read/29663147/cortical-bone-trajectory-screws-for-circumferential-arthrodesis-in-lumbar-degenerative-spine-clinical-and-radiological-outcomes-of-101-cases
#7
Nicola Marengo, Pedro Berjano, Fabio Cofano, Marco Ajello, Francesco Zenga, Giulia Pilloni, Federica Penner, Salvatore Petrone, Lorenzo Vay, Alessandro Ducati, Diego Garbossa
PURPOSE: The use of cortical bone trajectory (CBT) pedicle screws for circumferential interbody fusion represents a viable alternative for single-level procedure with reduced invasiveness and less tissue destruction than the traditional technique. In addition, CBT screws have a potentially stronger pullout strength because of the greater amount of cortical bone intercepted. Only few series exist evaluating clinical and radiological outcomes of CBT screws. METHODS: This is a retrospective cohort study...
April 16, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29663146/thoraco-lumbar-fractures-with-blunt-traumatic-aortic-injury-in-adult-patients-correlations-and-management
#8
Giorgio Santoro, Alessandro Ramieri, Vito Chiarella, Massimo Vigliotta, Maurizio Domenicucci
PURPOSE: Traumatic thoraco-lumbar spine fracture spine with a concomitant blunt aortic injury is uncommon but potentially a fatal association. Our aim was to clarify: morphology of spinal fractures related to vascular damages and vice versa, diagnostic procedures and decision-making process for the best treatment options for spine and vessels. METHODS: We enrolled 42 cases culled from the literature and five personal ones, reviewing in detail by AO Spine Classification, Society of Vascular Surgery classification and Abbreviated Injury Scale for neurological evaluation...
April 16, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29661549/adaptive-nonsingular-terminal-sliding-mode-controller-for-micro-nanopositioning-systems-driven-by-linear-piezoelectric-ceramic-motors
#9
Alireza Safa, Reza Yazdanpanah Abdolmalaki, Saeed Shafiee, Behzad Sadeghi
In the field of nanotechnology, there is a growing demand to provide precision control and manipulation of devices with the ability to interact with complex and unstructured environments at micro/nano-scale. As a result, ultrahigh-precision positioning stages have been turned into a key requirement of nanotechnology. In this paper, linear piezoelectric ceramic motors (LPCMs) are adopted to drive micro/nanopositioning stages since they have the ability to achieve high precision in addition to being versatile to be implemented over a wide range of applications...
April 13, 2018: ISA Transactions
https://www.readbyqxmd.com/read/29661326/superhydrophobic-three-dimensional-porous-ethyl-cellulose-absorbent-with-micro-nano-scale-hierarchical-structures-for-highly-efficient-removal-of-oily-contaminants-from-water
#10
Yeqiang Lu, Weizhong Yuan
The development of efficient absorbent materials is of global importance for oil spillage cleanup and environmental protection. In this work, a novel superhydrophobic micro/nano-scale hierarchical structured ethyl cellulose sponge was successfully fabricated via an eco-friendly salt-templating method followed by immobilizing silver nanoparticles on the surface and subsequent modification with long-chain alkanethiols. The as-prepared sponge with unique micro-nano structure and porous interconnected network exhibited low density (<17 kg m-3 ), high porosity (>98%) and robust superhydrophobicity (θwater  = 161...
July 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29650303/generating-region-proposals-for-histopathological-whole-slide-image-retrieval
#11
Yibing Ma, Zhiguo Jiang, Haopeng Zhang, Fengying Xie, Yushan Zheng, Huaqiang Shi, Yu Zhao, Jun Shi
BACKGROUND AND OBJECTIVE: Content-based image retrieval is an effective method for histopathological image analysis. However, given a database of huge whole slide images (WSIs), acquiring appropriate region-of-interests (ROIs) for training is significant and difficult. Moreover, histopathological images can only be annotated by pathologists, resulting in the lack of labeling information. Therefore, it is an important and challenging task to generate ROIs from WSI and retrieve image with few labels...
June 2018: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/29627678/multiscale-analysis-of-bamboo-deformation-mechanisms-following-naoh-treatment-using-x-ray-and-correlative-microscopy
#12
E Salvati, L R Brandt, F Uzun, H Zhang, C Papadaki, A M Korsunsky
For hundreds of years, bamboo has been employed for a variety of applications ranging from load-bearing structures to textiles. Thanks to its hierarchical structure that is functionally graded and naturally optimised, bamboo displays a variation in properties across its stem that ensures exceptional flexural performance. Often, alkaline solutions are employed for the treatment of bamboo in order to alter its natural elastic behaviour and make it suitable for particular applications. In this work we study the effect of NaOH solutions of five different concentration (up to 25%) on the elastic properties of bamboo...
April 5, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29625250/external-quality-assessment-identifies-training-needs-to-determine-the-neoplastic-cell-content-for-biomarker-testing
#13
Kelly Dufraing, Gert De Hertogh, Véronique Tack, Cleo Keppens, Elisabeth M C Dequeker, Han J H van Krieken
Neoplastic cell content determination is crucial for biomarker testing. It is known that inter-observer variation exists, but large-scale data are missing about variation in tumor delineation and cell content determination between pathologists. Results were obtained from the external quality assessment program for metastatic colorectal cancer from the European Society of Pathology (N=5,776 observations). The study included three parts: current practices were surveyed, neoplastic cell content estimations and delineations were retrieved from stained slides, and clinical reports were analyzed...
April 3, 2018: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/29621071/back-to-basics-adherence-with-guidelines-for-glucose-and-temperature-control-in-an-american-comprehensive-stroke-center-sample
#14
Anne W Alexandrov, Paola Palazzo, Sharon Biby, Abbigayle Doerr, Wendy Dusenbury, Rhonda Young, Anne Lindstrom, Mary Grove, Georgios Tsivgoulis, Sandy Middleton, Andrei V Alexandrov
BACKGROUND: Variance from guideline-directed care for glucose and temperature control remains unknown in the United States at a time when priorities have shifted to ensure rapid diagnosis and treatment of acute stroke patients. However, protocol-driven nursing surveillance for control of hyperglycemia and hyperthermia has been shown to improve patient outcomes. METHODS: We conducted an observational pilot study to assess compliance with American guidelines for glucose and temperature control and association with discharge outcomes in consecutive acute stroke patients admitted to 5 US comprehensive stroke centers...
April 4, 2018: Journal of Neuroscience Nursing: Journal of the American Association of Neuroscience Nurses
https://www.readbyqxmd.com/read/29620018/conductivity-enhancement-of-silver-nanowire-networks-via-simple-electrolyte-solution-treatment-and-solvent-washing
#15
Jiahui Gu, Xuelin Wang, Hongtao Chen, Shihua Yang, Huanhuan Feng, Xing Ma, Hongjun Ji, Jun Wei, Mingyu Li
As a promising replacement material for indium tin oxide (ITO) in flexible electronics, silver nanowires (AgNWs) usually need complicated post-treatment to reduce the high contact resistance across the intersections when used as transparent conductive films. In this work, a widely applicable nano-joining method for improving the overall conductivity of AgNW networks with different kinds of electrolyte solutions is presented. By treatment with an electrolyte solution with appropriate ionic strengths, the insulating surfactant layer (polyvinylpyrrolidone, PVP) on the AgNWs could be desorbed, and the AgNW network could be densified...
April 5, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29614807/delving-deep-into-multiscale-pedestrian-detection-via-single-scale-feature-maps
#16
Xinchuan Fu, Rui Yu, Weinan Zhang, Jie Wu, Shihai Shao
The standard pipeline in pedestrian detection is sliding a pedestrian model on an image feature pyramid to detect pedestrians of different scales. In this pipeline, feature pyramid construction is time consuming and becomes the bottleneck for fast detection. Recently, a method called multiresolution filtered channels (MRFC) was proposed which only used single scale feature maps to achieve fast detection. However, there are two shortcomings in MRFC which limit its accuracy. One is that the receptive field correspondence in different scales is weak...
April 2, 2018: Sensors
https://www.readbyqxmd.com/read/29610990/psychometric-validation-of-the-cross-culturally-adapted-traditional-chinese-version-of-the-back-beliefs-questionnaire-bbq-and-fear-avoidance-beliefs-questionnaire-fabq
#17
Prudence Wing Hang Cheung, Carlos King Ho Wong, Jason Pui Yin Cheung
PURPOSE: To translate and cross-culturally adapt the Back Beliefs Questionnaire (BBQ) and Fear-Avoidance Beliefs Questionnaire (FABQ) into traditional Chinese for their use in patients experiencing low back pain (LBP). METHODS: This was a prospective questionnaire translation and psychometric validation of the BBQ and FABQ in Chinese patients with back pain. Patients also completed the Traditional Chinese (Hong Kong) versions of the Oswestry Disability Index (ODI), the Short Form-12 version 2 (SF-12v2) questionnaires and the visual analogue scale (VAS) for LBP...
April 2, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29610988/operating-force-information-on-line-acquisition-of-a-novel-slave-manipulator-for-vascular-interventional-surgery
#18
Yan Zhao, Shuxiang Guo, Nan Xiao, Yuxin Wang, Youxiang Li, Yuhua Jiang
Vascular interventional surgery has its advantages compared to traditional operation. Master-slave robotic technology can further improve the operation accuracy, efficiency and safety of this complicated and high risk surgery. However, on-line acquisition of operating force information of catheter and guidewire remains to be a significant obstacle on the path to enhancing robotic surgery safety. Thus, a novel slave manipulator is proposed in this paper to realize on-line sensing of guidewire torsional operating torque and axial operation force during robotic assisted operations...
April 2, 2018: Biomedical Microdevices
https://www.readbyqxmd.com/read/29610078/estimating-dynamic-connectivity-states-in-fmri-using-regime-switching-factor-models
#19
Chee-Ming Ting, Hernando Ombao, S Balqis Samdin, Sh-Hussain Salleh
We consider the challenges in estimating the state-related changes in brain connectivity networks with a large number of nodes. Existing studies use the sliding-window analysis or time-varying coefficient models, which are unable to capture both smooth and abrupt changes simultaneously, and rely on ad-hoc approaches to the high-dimensional estimation. To overcome these limitations, we propose a Markov-switching dynamic factor model, which allows the dynamic connectivity states in functional magnetic resonance imaging (fMRI) data to be driven by lower-dimensional latent factors...
April 2018: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/29596212/perioperative-nutritional-optimization-in-spine-surgery
#20
Rabia Qureshi, Mohammad Rasool, Varun Puvanesarajah, Hamid Hassanzadeh
Nutritional optimization in patients undergoing spine surgery is important as improved surgical outcomes and decreased rates of complications have been noted in optimized patients. With the increasingly high numbers of elderly patient and patients with metabolic comorbidities undergoing spine procedures, perioperative nutritional status should be enhanced for the best possible surgical outcomes. Methods of optimization include preoperative screening with Nutritional Risk Score or other scoring systems, looking for changes in body mass index, detecting sarcopenia, and screening for metabolic abnormalities...
April 2018: Clinical Spine Surgery
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