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https://www.readbyqxmd.com/read/28095555/megasessions-for-robotic-hair-restoration
#1
Joa O Carlos Pereira, Joa O Carlos Pereira Filho, Joa O Pedro Cabrera Pereira
A robotic system can select and remove individual hair follicles from the donor area with great precision and without fatigue. This report describes the use of the robotic system in a megasession for hair restoration. Patients were instructed to cut their hair to 1.0 to 1.2 mm before surgery. The robot selected and removed 600 to 800 grafts per hour so the follicular units (FU)s could be transplanted manually to recipient sites. The robot arm consists of a sharp inner punch and a blunt outer punch which together separate FUs from the sur- rounding tissue...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28089602/particle-swarm-optimizer-for-weighting-factor-selection-in-intensity-modulated-radiation-therapy-optimization-algorithms
#2
Jie Yang, Pengcheng Zhang, Liyuan Zhang, Huazhong Shu, Baosheng Li, Zhiguo Gui
In inverse treatment planning of intensity-modulated radiation therapy (IMRT), the objective function is typically the sum of the weighted sub-scores, where the weights indicate the importance of the sub-scores. To obtain a high-quality treatment plan, the planner manually adjusts the objective weights using a trial-and-error procedure until an acceptable plan is reached. In this work, a new particle swarm optimization (PSO) method which can adjust the weighting factors automatically was investigated to overcome the requirement of manual adjustment, thereby reducing the workload of the human planner and contributing to the development of a fully automated planning process...
January 12, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28087266/assessment-of-sex-differences-in-body-composition-among-adolescents-with-anorexia-nervosa
#3
Jason M Nagata, Neville H Golden, Rebecka Peebles, Jin Long, Stuart B Murray, Mary B Leonard, Jennifer L Carlson
PURPOSE: To compare deficits in fat mass (FM) and lean body mass (LM) among male and female adolescents with anorexia nervosa (AN) and to identify other covariates associated with body composition. METHODS: We retrospectively reviewed electronic medical records of all subjects aged 9-20 years with a Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition diagnosis of AN and dual-energy x-ray absorptiometry scans after initial evaluation at Stanford between March 1997 and February 2011...
January 11, 2017: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/28078731/rapid-automated-landmarking-for-morphometric-analysis-of-three-dimensional-facial-scans
#4
Mao Li, Joanne B Cole, Mange Manyama, Jacinda R Larson, Denise K Liberton, Sheri L Riccardi, Tracey M Ferrara, Stephanie A Santorico, Jordan J Bannister, Nils D Forkert, Richard A Spritz, Washington Mio, Benedikt Hallgrimsson
Automated phenotyping is essential for the creation of large, highly standardized datasets from anatomical imaging data. Such datasets can support large-scale studies of complex traits or clinical studies related to precision medicine or clinical trials. We have developed a method that generates three-dimensional landmark data that meet the requirements of standard geometric morphometric analyses. The method is robust and can be implemented without high-performance computing resources. We validated the method using both direct comparison to manual landmarking on the same individuals and also analyses of the variation patterns and outlier patterns in a large dataset of automated and manual landmark data...
January 12, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28077726/climbing-fibers-control-purkinje-cell-representations-of-behavior
#5
Martha L Streng, Laurentiu S Popa, Timothy J Ebner
: A crucial issue in understanding cerebellar function is the interaction between simple spike (SS) and complex spike (CS) discharge, the two fundamentally different activity modalities of Purkinje cells. Although several hypotheses have provided insights into the interaction, none fully explain or are completely consistent with the spectrum of experimental observations. Here, we show that during a pseudo-random manual tracking task in the monkey (Macaca mulatta), climbing fiber discharge dynamically controls the information present in the SS firing, triggering robust and rapid changes in the SS encoding of motor signals in 67% of Purkinje cells...
January 11, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28072987/-a-pilot-clinical-study-of-immediate-provisionalization-with-a-chairside-computer-aided-design-and-computer-aided-manufacture-monolithic-crown-for-single-tooth-immediate-implant-placement
#6
J H Tian, P Di, Y Lin, Y Zhang, D H Wei, H Y Cui
Objective: To evaluate the primary clinical outcomes of immediate provisionalization with a monolithic crown utilizing a novel chairside computer aided design and computer aided manufacture (CAD/CAM) workflow for single tooth immediate implant placement. Methods: This pilot study was a prospective within-subjects design. Thirteen consecutive patients were included and diagnosed with untreatable single incisor or premolar with fine general and local anatomical conditions. The trial was conducted at Department of Implantology, Peking University School and Hospital of Stomatology, Beijing, between January 2016 and June 2016...
January 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28069664/physical-activity-sedentary-behavior-and-symptoms-of-major-depression-in-middle-childhood
#7
Tonje Zahl, Silje Steinsbekk, Lars Wichstrøm
OBJECTIVE: The prospective relation between physical activity and Diagnostic and Statistical Manual of Mental Disorders-defined major depression in middle childhood is unknown, as is the stability of depression. We therefore aimed to (1) determine whether there are reciprocal relations between moderate-to-vigorous physical activity (MVPA) and sedentary behavior, on one hand, and Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition defined symptoms of major depressive disorder, on the other and (2) assess the extent of stability in depressive symptoms from age 6 to 10 years...
January 9, 2017: Pediatrics
https://www.readbyqxmd.com/read/28068885/a-methodical-approach-for-the-assessment-of-waste-sorting-plants
#8
Alexander Feil, Thomas Pretz, Philipp Vitz, Eggo Ulphard Thoden van Velzen
A techno-economical evaluation of the processing result of waste sorting plants should at least provide a realistic assessment of the recovery yields of valuable materials and of the qualities of the obtained products. This practical data is generated by weighing all the output products and sampling these products. Due to the technological complexity of sorting plants, for example, lightweight packaging waste treatments plants and the high expenditures concerning time and costs of sampling with subsequent manual sorting for quality determination, usually only final products undergo such an investigation...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28064071/enhanced-efficiency-of-solid-state-nmr-investigations-of-energy-materials-using-an-external-automatic-tuning-matching-eatm-robot
#9
Oliver Pecher, David M Halat, Jeongjae Lee, Zigeng Liu, Kent J Griffith, Marco Braun, Clare P Grey
We have developed and explored an external automatic tuning/matching (eATM) robot that can be attached to commercial and/or home-built magic angle spinning (MAS) or static nuclear magnetic resonance (NMR) probeheads. Complete synchronization and automation with Bruker and Tecmag spectrometers is ensured via transistor-transistor-logic (TTL) signals. The eATM robot enables an automated "on-the-fly" re-calibration of the radio frequency (rf) carrier frequency, which is beneficial whenever tuning/matching of the resonance circuit is required, e...
December 23, 2016: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/28063666/development-of-a-clinical-applicable-graphical-user-interface-to-automatically-detect-exercise-oscillatory-ventilation-the-vodex-tool
#10
Justien Cornelis, Tim Denis, Paul Beckers, Christiaan Vrints, Dirk Vissers, Maggy Goossens
BACKGROUND: Cardiopulmonary exercise testing (CPET) gained importance in the prognostic assessment of especially patients with heart failure (HF). A meaningful prognostic parameter for early mortality in HF is exercise oscillatory ventilation (EOV). This abnormal respiratory pattern is recognized by hypo- and hyperventilation during CPET. Up until now, assessment of EOV is mainly done upon visual agreement or manual calculation. The purpose of this research was to automate the interpretation of EOV so this prognostic parameter could be readily investigated during CPET...
December 29, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28062390/the-readability-of-electronic-cigarette-health-information-and-advice-a-quantitative-analysis-of-web-based-information
#11
Albert Park, Shu-Hong Zhu, Mike Conway
BACKGROUND: The popularity and use of electronic cigarettes (e-cigarettes) has increased across all demographic groups in recent years. However, little is currently known about the readability of health information and advice aimed at the general public regarding the use of e-cigarettes. OBJECTIVE: The objective of our study was to examine the readability of publicly available health information as well as advice on e-cigarettes. We compared information and advice available from US government agencies, nongovernment organizations, English speaking government agencies outside the United States, and for-profit entities...
January 6, 2017: JMIR Public Health and Surveillance
https://www.readbyqxmd.com/read/28057199/prevalence-and-socio-economic-factors-determining-use-of-modern-contraception-among-married-men-in-kyrgyzstan-evidence-from-a-demographic-and-health-survey
#12
V Kogay, I Itua
OBJECTIVES: This study aimed to estimate the prevalence of modern contraceptive use (MCU), and to identify socio-economic factors that are associated with MCU among married men in Kyrgyzstan. STUDY DESIGN: A cross-sectional study based on the 2012 Kyrgyzstan Demographic and Health Survey data. METHODS: This study used data from 460 married men aged 20-49 years. Descriptive statistics, Pearson's Chi-squared test and logistic regression were used to estimate the prevalence of MCU, and to define factors that influence MCU among married men in Kyrgyzstan...
January 2017: Public Health
https://www.readbyqxmd.com/read/28056403/being-smart-about-writing-smart-objectives
#13
May Britt Bjerke, Ralph Renger
This article challenges the conventional wisdom in mainstream evaluation regarding the process for developing specific, measurable, attainable, relevant, and time-bound (SMART) objectives. The article notes several advantages of mainstreaming the SMART method including program capacity building and being able to independently monitor progress toward process and outcome objectives. It is argued the one size fits all approach for writing SMART objectives is misleading. The context in which the evaluation is conducted is a key deciding factor in how and when the SMART criteria should be applied...
December 23, 2016: Evaluation and Program Planning
https://www.readbyqxmd.com/read/28052542/impact-of-retinal-pigment-epithelium-pathology-on-spectral-domain-optical-coherence-tomography-derived-macular-thickness-and-volume-metrics-and-their-intersession-repeatability
#14
Daren Hanumunthadu, Jin Ping Wang, Wei Chen, Evan N Wong, Yi Chen, William H Morgan, Praveen J Patel, Fred K Chen
BACKGROUND: To determine the impact of retinal pigment epithelium (RPE) pathology on intersession repeatability of retinal thickness and volume metrics derived from Spectralis spectral-domain optical coherence tomography (Heidelberg Engineering, Heidelberg, Germany). DESIGN: Prospective cross-sectional single centre study. PARTICIPANTS: A total of 56 eyes of 56 subjects were divided into three groups: (i) normal RPE band (25 eyes); (ii) RPE elevation: macular soft drusen (13 eyes); and (iii) RPE attenuation: geographic atrophy or inherited retinal diseases (18 eyes)...
November 6, 2016: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28048653/tu-h-campus-jep1-01-characterization-of-a-parameterized-image-similarity-cost-function-for-automated-patient-and-site-specific-dir-accuracy-optimizations
#15
J Neylon, Y Min, K Hasse, D Low, A Santhanam
PURPOSE: Clinical deformable image registration (DIR) accuracy is difficult to quantify, making validation and verification manual and time consuming. It has also been seen that DIR accuracy can be improved by patient and site specific optimization. We previously investigated a cost function to parameterize image similarity metrics (ISMs) and provide a quantifiable comparison of DIR performance. In this abstract, we characterize and optimize the cost function response (CFR) and correlation to target registration error (TRE) in a dense registration parameter space...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048455/we-ab-209-02-a-new-inverse-planning-framework-with-principle-based-modeling-of-inter-structural-dosimetric-tradeoffs
#16
H Liu, P Dong, L Xing
PURPOSE: Traditional radiotherapy inverse planning relies on the weighting factors to phenomenologically balance the conflicting criteria for different structures. The resulting manual trial-and-error determination of the weights has long been recognized as the most time-consuming part of treatment planning. The purpose of this work is to develop an inverse planning framework that parameterizes the inter-structural dosimetric tradeoff among with physically more meaningful quantities to simplify the search for a clinically sensible plan...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047986/su-f-t-234-quality-improvements-in-the-electronic-medical-record-of-patients-treated-with-high-dose-rate-brachytherapy
#17
T Diener, D Wilkinson
PURPOSE: To improve workflow efficiency and patient safety by assessing the quality control documentation for HDR brachytherapy within our Electronic Medical Record System (Mosaiq). METHODS: A list of parameters based on NRC regulations, our quality management program (QMP), recommendations of the ACR and the American Brachytherapy Society, and HDR treatment planning risks identified in our previous FMEA study was made. Next, the parameter entries were classified according to the type of data input-manual, electronic, or both...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047892/su-c-207b-02-maximal-noise-reduction-filter-with-anatomical-structures-preservation
#18
R Maitree, G Guzman, A Chundury, M Roach, D Yang
PURPOSE: All medical images contain noise, which can result in an undesirable appearance and can reduce the visibility of anatomical details. There are varieties of techniques utilized to reduce noise such as increasing the image acquisition time and using post-processing noise reduction algorithms. However, these techniques are increasing the imaging time and cost or reducing tissue contrast and effective spatial resolution which are useful diagnosis information. The three main focuses in this study are: 1) to develop a novel approach that can adaptively and maximally reduce noise while preserving valuable details of anatomical structures, 2) to evaluate the effectiveness of available noise reduction algorithms in comparison to the proposed algorithm, and 3) to demonstrate that the proposed noise reduction approach can be used clinically...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047866/su-f-t-357-dosimetric-comparison-of-automatic-imrt-planning-and-manual-imrt-plan-for-head-and-neck-cancer
#19
X Chang, K Li, W Hu
PURPOSE: The purpose of this study is to compare dosimetric differences of Auto-planning and manual IMRT plan and investigate the feasibility and efficiency of the Auto-planning in the nasopharyngeal carcinoma (NPC). METHODS: Ten patients with NPC treated were enrolled in this study. Two IMRT plans were generated for each patient: manually optimized clinical plan and the automatically optimized plan using the Pinnacle Auto-planning (Auto plan). All the plan parameters such as gantry angle, the maximum number of iterations, the maximum number of control points, minimum segment MU and area are same, except the optimization method...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047124/su-f-t-468-efficient-scanning-data-analysis-for-tomotherapy
#20
B Sintay, K Pearman, J Maurer, H Liu, T Hayes, D Wiant
PURPOSE: The standard TomoTherapy 2D scanning system requires manual analysis using spreadsheets or similar software. Manual analysis is time consuming and does not allow efficient use of the medical physicist or timely results that may indicate issues during the acquisition of data. The purpose of this study is to determine if an in-house solution can provide timely analysis of TomoTherapy scan data. METHODS: A custom MATLAB program utilizing a streamlined graphical interface was developed to interpret the native scanning data acquired by the TomoTherapy Electrometer Measurement System (TEMS)...
June 2016: Medical Physics
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