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https://www.readbyqxmd.com/read/29140783/blending-face-details-synthesizing-a-face-using-multiscale-face-models
#1
Seung-Hyun Yoon, John Lewis, Taehyun Rhee
Creating realistic 3D face models is a challenging problem in computer graphics because humans are so sensitive to facial abnormalities. The authors propose a method to synthesize a 3D face model using weighted blending of multiscale details from different face models. Using multiscale continuous displacement maps (CDMs), they achieve full correspondences across multiple scales in the parameter space. Their results demonstrate detail transfer across faces with highly different proportions, such as between humans and nonhuman creatures...
November 2017: IEEE Computer Graphics and Applications
https://www.readbyqxmd.com/read/29137728/a-computational-model-for-false-lumen-thrombosis-in-type-b-aortic-dissection-following-thoracic-endovascular-repair
#2
Claudia Menichini, Zhuo Cheng, Richard G J Gibbs, Xiao Yun Xu
Thoracic endovascular repair (TEVAR) has recently been established as the preferred treatment option for complicated type B dissection. This procedure involves covering the primary entry tear to stimulate aortic remodelling and promote false lumen thrombosis thereby restoring true lumen flow. However, complications associated with incomplete false lumen thrombosis, such as aortic dilatation and stent graft induced new entry tears, can arise after TEVAR. This study presents the application and validation of a recently developed mathematical model for patient-specific prediction of thrombus formation and growth under physiologically realistic flow conditions...
November 11, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29135750/student-and-educator-experiences-of-maternal-child-simulation-based-learning-a-systematic-review-of-qualitative-evidence
#3
Karen MacKinnon, Lenora Marcellus, Julie Rivers, Carol Gordon, Maureen Ryan, Diane Butcher
BACKGROUND: Although maternal-child care is a pillar of primary health care, there is a global shortage of maternal-child health care providers. Nurse educators experience difficulties providing undergraduate students with maternal-child learning experiences for a number of reasons. Simulation has the potential to complement learning in clinical and classroom settings. Although systematic reviews of simulation are available, no systematic reviews of qualitative evidence related to maternal-child simulation-based learning (SBL) for undergraduate nursing students and/or educators have been located...
November 2017: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/29134674/experimental-validation-of-two-dual-energy-ct-methods-for-proton-therapy-using-heterogeneous-tissue-samples
#4
Esther Bär, Arthur Lalonde, Rongxiao Zhang, Kyung-Wook Jee, Kai Yang, Gregory Sharp, Bob Liu, Gary Royle, Hugo Bouchard, Hsiao-Ming Lu
PURPOSE: The purpose of this work is to evaluate the performance of dual-energy CT (DECT) for determining proton stopping power ratios (SPRs) in an experimental environment and to demonstrate its potential advantages over conventional single-energy CT (SECT) in clinical conditions. METHODS: Water equivalent range (WER) measurements of 12 tissue-equivalent plastic materials and 12 fresh animal tissue samples are performed in a 195 MeV broad proton beam using the dose extinction method...
November 14, 2017: Medical Physics
https://www.readbyqxmd.com/read/29131161/rapid-virtual-hematoxylin-and-eosin-histology-of-breast-tissue-specimens-using-a-compact-fluorescence-nonlinear-microscope
#5
Lucas C Cahill, Michael G Giacomelli, Tadayuki Yoshitake, Hilde Vardeh, Beverly E Faulkner-Jones, James L Connolly, Chi-Kuang Sun, James G Fujimoto
Up to 40% of patients undergoing breast conserving surgery for breast cancer require repeat surgeries due to close to or positive margins. The lengthy processing required for evaluating surgical margins by standard paraffin-embedded histology precludes its use during surgery and therefore, technologies for rapid evaluation of surgical pathology could improve the treatment of breast cancer by reducing the number of surgeries required. We demonstrate real-time histological evaluation of breast cancer surgical specimens by staining specimens with acridine orange (AO) and sulforhodamine 101 (SR101) analogously to hematoxylin and eosin (H&E) and then imaging the specimens with fluorescence nonlinear microscopy (NLM) using a compact femtosecond fiber laser...
November 13, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29130763/comparative-evaluation-of-a-novel-phage-protein-ligand-assay-and-immunomagnetic-separation-method-to-isolate-the-seven-top-serogroups-of-escherichia-coli-o157-o26-o103-o145-o111-o45-and-o121-in-foods-at-risk
#6
M Bouvier, S D Miszczycha, X Guillarme, C Tadla, L Collinet, D Thevenot Sergentet
The presence of Shiga toxin-producing Escherichia coli (STEC) in food is a major concern for food safety authorities and industries. Methods for detecting these pathogenic bacteria are crucial. Enrichment of foods for STEC identification has been optimized, but selective concentration of bacteria before isolation still needs to be improved. In the present study, we tested the performance of the VIDAS ESPT detection method against that of the immunomagnetic separation (IMS) method. A preenrichment inoculation was performed to provide a realistic scenario of the contamination that occurs in foods, and the methods were then compared...
December 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/29130428/a-scoping-review-of-physical-rehabilitation-in-long-term-care-interventions-outcomes-tools
#7
Caitlin McArthur, Jenna C Gibbs, Ruchit Patel, Alexandra Papaioannou, Paula Neves, Jaimie Killingbeck, John Hirdes, James Milligan, Katherine Berg, Lora Giangregorio
Residents in long-term care (LTC) often require physical rehabilitation (PR) to maintain/improve physical function. This scoping review described the breadth of literature regarding PR in LTC to date, synthesizing PR interventions that have been evaluated, outcomes used, and tools for determining service eligibility. A structured search, conducted in six licensed databases and grey literature, identified 381 articles for inclusion. Most interventions were delivered and evaluated at the resident level and typically were multicomponent exercise programs...
December 2017: Canadian Journal on Aging, la Revue Canadienne du Vieillissement
https://www.readbyqxmd.com/read/29129612/why-lipostatic-set-point-systems-are-unlikely-to-evolve
#8
John R Speakman
OBJECTIVES: Body fatness is widely assumed to be regulated by a lipostatic set-point system, which has evolved in response to trade-offs in the risks of mortality. Increasing fatness makes the risk of starvation lower but increases the risk of predation. Yet other models are available. The aim of this work is to evaluate using mathematical modeling whether set-point systems are more likely to evolve than the alternatives. METHODS: I modeled the trade-off in mortality risks using a simple mathematical model, which generates an optimum level of fatness that is presumed to be the driver for the evolution of a set-point...
October 21, 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29128759/a-conduction-velocity-adapted-eikonal-model-for-electrophysiology-problems-with-re-excitability-evaluation
#9
Cesare Corrado, Nejib Zemzemi
Computational models of heart electrophysiology achieved a considerable interest in the medical community as they represent a novel framework for the study of the mechanisms underpinning heart pathologies. The high demand of computational resources and the long computational time required to evaluate the model solution hamper the use of detailed computational models in clinical applications. In this paper, we present a multi-front eikonal algorithm that adapts the conduction velocity (CV) to the activation frequency of the tissue substrate...
November 3, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/29128297/role-of-geriatric-oncologists-in-optimizing-care-of-urological-oncology-patients
#10
REVIEW
Jean-Pierre Droz, Helen Boyle, Gilles Albrand, Nicolas Mottet, Martine Puts
CONTEXT: Urological cancers are common. Since the median age of diagnosis is 60-70 yr, many patients require geriatric as well as urological evaluation if treatment is to be tailored to individual health status including comorbidities and frailty. OBJECTIVE: To review the most important features of geriatric assessment and its expected benefits. We also consider ways in which collaboration between urologists and geriatricians and geriatric teams can benefit patient well-being...
November 8, 2017: European Urology Focus
https://www.readbyqxmd.com/read/29124930/dual-internal-standards-with-metals-and-molecules-for-maldi-imaging-of-kidney-lipids
#11
Sarah Ahmed Aboulmagd, Diego Esteban-Fernández, Estefania Moreno-Gordaliza, Boris Neumann, Ahmed H El-Khatib, Alberto Lazaro, Alberto Tejedor, M Milagros Gómez-Gómez, Michael W Linscheid
The quest for internal standards useful in MALDI imaging studies goes on to get not only lateral distribution but also reliable abundance of ions, thus quantitative information. We developed a procedure based on application of matrix and dual internal standards to allow intra- and inter-sample normalization of lipids intensities in kidney sections of control and cisplatin-treated Wistar rats. An inkjet printer was used to deposit a custom-prepared ink with DHB as MALDI matrix, a primary lipids-based internal standard, and a spiked lanthanide as a secondary internal standard...
November 10, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29124643/characteristics-of-radiocesium-contaminations-in-mushrooms-after-the-fukushima-nuclear-accident-evaluation-of-the-food-monitoring-data-from-march-2011-to-march-2016
#12
Benedikt Prand-Stritzko, Georg Steinhauser
The monitoring inspection of food after the Fukushima nuclear accident (2011) was essential for ensuring food safety in Japan and reducing the adverse health effects due to incorporation of inacceptable amounts of radionuclides, in particular radiocesium ((134)Cs and (137)Cs). In this study, the mushroom fraction of the governmental data set of the first 5 years after the accident has been analyzed for contamination levels in mushrooms, in particular time trends and radioecological characteristics as well as associated health risks...
November 9, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29123363/whatch-em-a-weather-driven-energy-balance-model-for-determining-water-height-and-temperature-in-container-habitats-for-aedes-aegypti
#13
Daniel F Steinhoff, Andrew J Monaghan, Lars Eisen, Michael J Barlage, Thomas M Hopson, Isaac Tarakidzwa, Karielys Ortiz-Rosario, Saul Lozano-Fuentes, Mary H Hayden, Paul E Bieringer, Carlos M Welsh Rodríguez
The mosquito virus vector Aedes (Ae.) aegypti exploits a wide range of containers as sites for egg laying and development of the immature life stages, yet the approaches for modeling meteorologically sensitive container water dynamics have been limited. This study introduces the Water Height and Temperature in Container Habitats Energy Model (WHATCH'EM), a state-of-the-science, physically based energy balance model of water height and temperature in containers that may serve as development sites for mosquitoes...
December 2016: Earth interactions
https://www.readbyqxmd.com/read/29122662/remote-loading-of-liposomes-with-manganese-52-and-in-vivo-evaluation-of-the-stabilities-of-52-mn-dota-and-64-cu-dota-using-radiolabelled-liposomes-and-pet-imaging
#14
Andreas I Jensen, Gregory W Severin, Anders E Hansen, Frederikke P Fliedner, Rasmus Eliasen, Ladan Parhamifar, Andreas Kjær, Thomas L Andresen, Jonas R Henriksen
Liposomes are nanoparticles used in drug delivery that distribute over several days in humans and larger animals. Radiolabeling with long-lived positron emission tomography (PET) radionuclides, such as manganese-52 ((52)Mn, T½=5.6days), allow the imaging of this biodistribution. We report optimized protocols for radiolabeling liposomes with (52)Mn, through both remote-loading and surface labeling. For comparison, liposomes were also remote-loaded and surface labeled with copper-64 ((64)Cu, T½=12.7h) through conventional means...
November 6, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29118421/navigability-of-temporal-networks-in-hyperbolic-space
#15
Elisenda Ortiz, Michele Starnini, M Ángeles Serrano
Information routing is one of the main tasks in many complex networks with a communication function. Maps produced by embedding the networks in hyperbolic space can assist this task enabling the implementation of efficient navigation strategies. However, only static maps have been considered so far, while navigation in more realistic situations, where the network structure may vary in time, remains largely unexplored. Here, we analyze the navigability of real networks by using greedy routing in hyperbolic space, where the nodes are subject to a stochastic activation-inactivation dynamics...
November 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29117094/a-novel-task-trainer-for-penile-corpus-cavernosa-aspiration
#16
Amber S Ruest, Leila P Getto, Jenna M Fredette, Amy Cherico, Mia A Papas, Jason T Nomura
INTRODUCTION: Priapism is a rare yet time sensitive emergency with potentially significant morbidity. A novel task trainer was developed for corpus cavernosa aspiration and phenylephrine injection. The primary aim of this study was to assess model realism and usefulness for emergency medicine resident procedural education. Secondarily, an assessment of comfort level with the procedure before and after intervention was performed. METHODS: A priapism model containing corpus cavernosa and spongiosum analogs was constructed...
November 8, 2017: Simulation in Healthcare: Journal of the Society for Simulation in Healthcare
https://www.readbyqxmd.com/read/29115690/the-effects-of-intravoxel-contrast-agent-diffusion-on-the-analysis-of-dce-mri-data-in-realistic-tissue-domains
#17
Ryan T Woodall, Stephanie L Barnes, David A Hormuth, Anna G Sorace, C Chad Quarles, Thomas E Yankeelov
PURPOSE: Quantitative evaluation of dynamic contrast enhanced MRI (DCE-MRI) allows for estimating perfusion, vessel permeability, and tissue volume fractions by fitting signal intensity curves to pharmacokinetic models. These compart mental models assume rapid equilibration of contrast agent within each voxel. However, there is increasing evidence that this assumption is violated for small molecular weight gadolinium chelates. To evaluate the error introduced by this invalid assumption, we simulated DCE-MRI experiments with volume fractions computed from entire histological tumor cross-sections obtained from murine studies...
November 8, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29113697/sensitivity-of-a-prompt-gamma-slit-camera-to-detect-range-shifts-for-proton-treatment-verification
#18
Lena Nenoff, Marlen Priegnitz, Guillaume Janssens, Johannes Petzoldt, Patrick Wohlfahrt, Anna Trezza, Julien Smeets, Guntram Pausch, Christian Richter
BACKGROUND AND PURPOSE: A prompt-gamma imaging (PGI) slit-camera was recently applied successfully in clinical proton treatments using pencil beam scanning (PBS) and double scattering (DS). However, its full capability under clinical conditions has still to be systematically evaluated. Here, the performance of the slit-camera is systematically assessed in well-defined error scenarios using realistic treatment deliveries to an anthropomorphic head phantom. MATERIALS AND METHODS: The sensitivity and accuracy to detect introduced global and local range shifts with the slit-camera was investigated in PBS and DS irradiations...
November 4, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29111608/approach-for-gait-analysis-in-persons-with-limb-loss-including-residuum-and-prosthesis-socket-dynamics
#19
A K LaPrè, M Price, R Wedge, B R Umberger, F Sup
Musculoskeletal modeling and marker based motion capture techniques are commonly used to quantify the motions of body segments, and the forces acting on them during human gait. However, when these techniques are applied to analyze the gait of people with lower limb loss, the clinically relevant interaction between the residual limb and prosthesis socket is typically overlooked. It is known that there is considerable motion and loading at the residuum-socket interface, yet traditional gait analysis techniques do not account for these factors due to the inability to place tracking markers on the residual limb inside of the socket...
November 7, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/29110327/caries-risk-assessment-tool-and-prevention-protocol-for-public-health-nurses-in-mother-and-child-health-centers-israel
#20
Lena Natapov, Dan Dekel-Markovich, Hadas Granit-Palmon, Efrat Aflalo, Shlomo Paul Zusman
OBJECTIVES: Dental caries is the most prevalent chronic disease in children. Caries risk assessment tools enable the dentists, physicians, and nondental health care providers to assess the individual's risk. Intervention by nurses in primary care settings can contribute to the establishment of oral health habits and prevention of dental disease. In Israel, Mother and Child Health Centers provide free preventive services for pregnant women and children by public health nurses. MATERIALS AND METHODS: A caries prevention program in health centers started in 2015...
November 7, 2017: Public Health Nursing
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