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https://www.readbyqxmd.com/read/28335472/detecting-breast-cancer-with-a-dual-modality-device
#1
Kamila Padia, Tania S Douglas, Lydia L Cairncross, Roland V Baasch, Christopher L Vaughan
Although mammography has been the gold standard for the early detection of breast cancer, if a woman has dense breast tissue, a false negative diagnosis may occur. Breast ultrasound, whether hand-held or automated, is a useful adjunct to mammography but adds extra time and cost. The primary aim was to demonstrate that our second-generation Aceso system, which combines full-field digital mammography (FFDM) and automated breast ultrasound (ABUS) in a single platform, is able to produce improved quality images that provide clinically meaningful results...
March 18, 2017: Diagnostics
https://www.readbyqxmd.com/read/28334380/the-influence-of-sogatella-furcifera-hemiptera-delphacidae-migratory-events-on-the-southern-rice-black-streaked-dwarf-virus-epidemics
#2
Yan Wu, Guo Zhang, Xiao Chen, Xi-Jie Li, Kai Xiong, Shu-Pei Cao, Yan-Yue Hu, Ming-Hong Lu, Wan-Cai Liu, Hoang-Anh Tuan, Guo-Jun Qi, Bao-Ping Zhai
Southern rice black-streaked dwarf virus (SRBSDV) caused serious rice losses. After the first outbreak in 2009 in northern Vietnam and southern China, the virus ravaged crops again on enormous scales in 2010, but infections have decreased sharply since 2011. We presumed that the sudden epidemics and fadeout of SRBSDV would be closely related to the migratory events of the insect vector, Sogatella furcifera. This study sought the source area of SRBSDV using the trajectory analysis method, and revealed the relationship between SRBSDV dynamics and migration of S...
March 2, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28333895/visual-field-defects-in-young-patients-with-open-angle-glaucoma-comparison-between-high-tension-and-normal-tension-glaucoma
#3
Ji-Hye Park, Chungkwon Yoo, Jinhwan Park, Yong Yeon Kim
PURPOSE: To investigate the clinical features of young Korean patients with open-angle glaucoma (OAG), and to compare visual field (VF) defects between patients with normal-tension glaucoma (NTG) and those with high-tension glaucoma (HTG). MATERIALS AND METHODS: Patients with OAG younger than 40 years of age were divided into NTG and HTG groups based on untreated intraocular pressure (IOP) level. The patients were matched according to the mean deviation of standard automated perimetry...
March 22, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28333375/renal-nerves-and-long-term-control-of-arterial-pressure
#4
John W Osborn, Jason D Foss
The objective of this review is to provide an in-depth evaluation of how renal nerves regulate renal and cardiovascular function with a focus on long-term control of arterial pressure. We begin by reviewing the anatomy of renal nerves and then briefly discuss how the activity of renal nerves affects renal function. Current methods for measurement and quantification of efferent renal-nerve activity (ERNA) in animals and humans are discussed. Acute regulation of ERNA by classical neural reflexes as well and hormonal inputs to the brain is reviewed...
March 16, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28332340/are-dental-students-ready-for-supercomplex-dental-practice
#5
D Leadbeatter, C Peck
Contemporary dental practice requires practitioners who are able to draw upon varying interconnected knowledge and skills, in order to make judgments and take action when faced with multiple, often contradictory, ways of interpreting a situation. However, the curricula that prepare students for dental practice are traditionally based on the theoretical knowledge and technical skills to be gained by students. This is despite evidence in the dental literature of a collective desire for graduates to have more range and depth in their repertoire...
March 23, 2017: European Journal of Dental Education: Official Journal of the Association for Dental Education in Europe
https://www.readbyqxmd.com/read/28331822/risk-assessment-in-relation-to-the-detection-of-small-pulmonary-nodules
#6
REVIEW
John K Field, Michael W Marcus, Matthijs Oudkerk
The National Lung Cancer Screening trial (NLST) demonstrated that individuals assigned to the LDCT screening arm had a 20% lower mortality than those who were assigned to the conventional chest radiography. The NLST was thoroughly analyzed by the US Preventive Task Force on CT Screening and they recommended that lung cancer screening should be implemented. A number of other countries have also recommended implementation, whilst others are awaiting the outcome of the NELSON Trial. However, recommendations for the management of CT screen detected nodules have only recently had any clarity...
February 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/28331147/basic-study-on-visibility-and-water-equivalency-of-a-new-colorless-transparent-bolus-for-electron-radiotherapy
#7
Daiki Maruyama, Shinichi Yamazaki, Emi Honda, Eiji Suzuki, Kouji Hommatsu, Ryo Oshiba, Noboru Sato
Boluses used in electron radiotherapy need to have radiation field visibility and water equivalence. In this report, we have examined field visibility and water equivalence of a new colorless transparent bolus. We examined field visibility, water equivalence, and dose profile. Field visibility was evaluated by comparison to conventional bolus. Water equivalence was investigated by a measured fluence scaling factor. The dose profile was measured by using radiochromic film with the bolus and an ionization chamber in water...
2017: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/28328554/the-effect-of-inlet-cannula-length-on-the-intraventricular-flow-field-an-in-vitro-flow-visualization-study-using-the-evaheart-lvad
#8
Karen May-Newman, Juyeun Moon, Varsha Ramesh, Ricardo Montes, Josue Campos, Brian Herold, Paul Isingoma, Tadashi Motomura, Robert Benkowski
LVAD inflow cannula malposition is a significant risk for pump thrombosis. Thrombus development is influenced by altered flow dynamics, such as stasis or high shear that promote coagulation. The goal of this study was to measure the intraventricular flow field surrounding the apical inflow cannula of the Evaheart centrifugal LVAD, and assess flow stasis, vortex structures and pulsatility for a range of cannula insertion depths and support conditions. Experimental studies were performed using a mock loop with a customized silicone left ventricle (LV) and the Evaheart LVAD...
March 20, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28326607/effect-of-apparent-depth-cues-on-accommodation-in-a-badal-optometer
#9
Carles Otero, Mikel Aldaba, Beatriz Martínez-Navarro, Jaume Pujol
BACKGROUND: The aim was to analyse the effect of peripheral depth cues on accommodation in Badal optometers. METHODS: Monocular refractions at 0.17 and 5.00 D of accommodative stimulus were measured with the PowerRef II autorefractor (Plusoptix Inc., Atlanta, Georgia, USA). Subjects looked (randomly) at four different scenes, one real scene comprising familiar objects at different depth planes (Real) and three virtual scenes comprising different two-dimensional pictures seen through a Badal lens...
March 21, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28325101/-i-had-no-idea-what-a-complicated-business-eating-is%C3%A2-a-qualitative-study-of-the-impact-of-dysphagia-during-stroke-recovery
#10
Jennifer Moloney, Margaret Walshe
AIM: Persons with dysphagia following stroke may experience uncomfortable symptoms such as persistent coughing, choking and poor salivary management. They may also spend long periods of time unable to eat or drink or with restrictions on oral intake. Experiences of dysphagia post-stroke are richly described in unsolicited narratives such as autobiographies on the stroke event, which often include details of the author's journey through their stroke recovery. The aim of this study is to use autobiographical accounts to explore the experiences of those living with dysphagia following stroke...
March 21, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28323391/metagenomic-analysis-reveals-changes-of-the-drosophila-suzukii-microbiota-in-the-newly-colonised-regions
#11
Isabel Martinez-Sañudo, Mauro Simonato, Andrea Squartini, Nicola Mori, Laura Marri, Luca Mazzon
The spotted wing drosophila, Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) is a highly polyphagous pest of a wide variety of wild or cultivated berry and stone fruit. Originating from Southeast Asia, it has recently invaded a wide range of regions in Europe and North-America. It is well known that insect microbiotas may significantly influence several aspects of the host biology and play an important role in invasive species introduction into new areas. However, in spite of the great economic importance of D...
March 21, 2017: Insect Science
https://www.readbyqxmd.com/read/28322934/comparative-immunogenomics-of-molluscs
#12
Jonathan H Schultz, Coen M Adema
Comparative immunology, studying both vertebrates and invertebrates, provided the earliest descriptions of phagocytosis as a general immune mechanism. However, the large scale of animal diversity challenges all-inclusive investigations and the field of immunology has developed by mostly emphasizing study of a few vertebrate species. In addressing the lack of comprehensive understanding of animal immunity, especially that of invertebrates, comparative immunology helps toward management of invertebrates that are food sources, agricultural pests, pathogens, or transmit diseases, and helps interpret the evolution of animal immunity...
March 18, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28321960/hiv-infection-is-influenced-by-dynamin-at-three-independent-points-in-the-viral-life-cycle
#13
Anupriya Aggarwal, Tina L Hitchen, Lars Ootes, Samantha McAllery, Andrew Wong, Khanh Nguyen, Adam McCluskey, Phillip J Robinson, Stuart G Turville
CD4 T cells are important cellular targets for HIV-1, yet the primary site of HIV fusion remains unresolved. Candidate fusion sites are either the plasma membrane or from within endosomes. One area of investigation compounding the controversy of this field, is the role of the protein dynamin in the HIV life cycle. To understand the role of dynamin in primary CD4 T cells we combined dynamin inhibition with a series of complementary assays based on single particle tracking, HIV fusion, detection of HIV DNA products and active viral transcription...
March 21, 2017: Traffic
https://www.readbyqxmd.com/read/28320650/svbrdf-invariant-shape-and-reflectance-estimation-from-a-light-field-camera
#14
Ting-Chun Wang, Manmohan Chandraker, A Alyosha Efros, Ravi Ramamoorthi
Light-field cameras have recently emerged as a powerful tool for one-shot passive 3D shape capture. However, obtaining the shape of glossy objects like metals or plastics remains challenging, since standard Lambertian cues like photo-consistency cannot be easily applied. In this paper, we derive a spatially-varying (SV)BRDF-invariant theory for recovering 3D shape and reflectance from light-field cameras. Our key theoretical insight is a novel analysis of diffuse plus single-lobe SVBRDFs under a light-field setup...
March 9, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/28317915/deep-brain-imaging-via-epi-fluorescence-computational-cannula-microscopy
#15
Ganghun Kim, Naveen Nagarajan, Elissa Pastuzyn, Kyle Jenks, Mario Capecchi, Jason Shepherd, Rajesh Menon
Here we demonstrate widefield (field diameter = 200 μm) fluorescence microscopy and video imaging inside the rodent brain at a depth of 2 mm using a simple surgical glass needle (cannula) of diameter 0.22 mm as the primary optical element. The cannula guides excitation light into the brain and the fluorescence signal out of the brain. Concomitant image-processing algorithms are utilized to convert the spatially scrambled images into fluorescent images and video. The small size of the cannula enables minimally invasive imaging, while the long length (>2 mm) allow for deep-brain imaging with no additional complexity in the optical system...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28317847/evidence-for-coseismic-subsidence-events-in-a-southern-california-coastal-saltmarsh
#16
Robert Leeper, Brady Rhodes, Matthew Kirby, Katherine Scharer, Joseph Carlin, Eileen Hemphill-Haley, Simona Avnaim-Katav, Glen MacDonald, Scott Starratt, Angela Aranda
Paleoenvironmental records from a southern California coastal saltmarsh reveal evidence for repeated late Holocene coseismic subsidence events. Field analysis of sediment gouge cores established discrete lithostratigraphic units extend across the wetland. Detailed sediment analyses reveal abrupt changes in lithology, percent total organic matter, grain size, and magnetic susceptibility. Microfossil analyses indicate that predominantly freshwater deposits bury relic intertidal deposits at three distinct depths...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28314954/retinal-and-choroidal-vascular-features-in-patients-with-retinitis-pigmentosa-imaged-by-oct-based-microangiography
#17
Kasra A Rezaei, Qinqin Zhang, Chieh-Li Chen, Jennifer Chao, Ruikang K Wang
PURPOSE: To image vascular features of retinitis pigmentosa (RP) using optical coherence tomography angiography (OCTA). METHODS: Patients with RP were imaged by spectral domain optical coherence tomography based angiography (OCTA). The optical microangiography (OMAG) algorithm was applied to scanned datasets to generate 3D OCTA retinal angiograms, i.e., OMAG angiograms. Motion tracking was used to minimize artifacts due to eye movement, and large field of view OMAG angiograms were achieved through a montage scanning protocol...
March 17, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28306751/peptidomic-and-transcriptomic-profiling-of-four-distinct-spider-venoms
#18
Vera Oldrati, Dominique Koua, Pierre-Marie Allard, Nicolas Hulo, Miriam Arrell, Wolfgang Nentwig, Frédérique Lisacek, Jean-Luc Wolfender, Lucia Kuhn-Nentwig, Reto Stöcklin
Venom based research is exploited to find novel candidates for the development of innovative pharmacological tools, drug candidates and new ingredients for cosmetic and agrochemical industries. Moreover, venomics, as a well-established approach in systems biology, helps to elucidate the genetic mechanisms of the production of such a great molecular biodiversity. Today the advances made in the proteomics, transcriptomics and bioinformatics fields, favor venomics, allowing the in depth study of complex matrices and the elucidation even of minor compounds present in minute biological samples...
2017: PloS One
https://www.readbyqxmd.com/read/28304065/charge-transfer-induced-energy-storage-in-caznos-mn-insight-from-experimental-and-computational-spectroscopy
#19
Jonas J Joos, Kurt Lejaeghere, Katleen Korthout, Ang Feng, Dirk Poelman, Philippe F Smet
CaZnOS:Mn(2+) is a rare-earth-free luminescent compound with an orange broadband emission at 612 nm, featuring pressure sensing capabilities, often explained by defect levels where energy can be stored. Despite recent efforts from experimental and theoretical points of view, the underlying luminescence mechanisms in this phosphor still lack a profound understanding. By the evaluation of thermoluminescence as a function of the charging wavelength, we probe the defect levels allowing energy storage. Multiple trap depths and trapping routes are found, suggesting predominantly local trapping close to Mn(2+) impurities...
March 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28303148/differentiating-wheat-genotypes-by-bayesian-hierarchical-nonlinear-mixed-modeling-of-wheat-root-density
#20
Anton P Wasson, Grace S Chiu, Alexander B Zwart, Timothy R Binns
Ensuring future food security for a growing population while climate change and urban sprawl put pressure on agricultural land will require sustainable intensification of current farming practices. For the crop breeder this means producing higher crop yields with less resources due to greater environmental stresses. While easy gains in crop yield have been made mostly "above ground," little progress has been made "below ground"; and yet it is these root system traits that can improve productivity and resistance to drought stress...
2017: Frontiers in Plant Science
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