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https://www.readbyqxmd.com/read/28624755/stereo-vision-based-tracking-of-soft-tissue-motion-with-application-to-online-ablation-control-in-laser-microsurgery
#1
Andreas Schoob, Dennis Kundrat, Lüder A Kahrs, Tobias Ortmaier
Recent research has revealed that image-based methods can enhance accuracy and safety in laser microsurgery. In this study, non-rigid tracking using surgical stereo imaging and its application to laser ablation is discussed. A recently developed motion estimation framework based on piecewise affine deformation modeling is extended by a mesh refinement step and considering texture information. This compensates for tracking inaccuracies potentially caused by inconsistent feature matches or drift. To facilitate online application of the method, computational load is reduced by concurrent processing and affine-invariant fusion of tracking and refinement results...
June 8, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28622408/creation-of-the-quebrada-arriba-community-and-academic-partnership-an-effective-coalition-for-addressing-health-disparities-in-older-puerto-ricans
#2
Elsa M Orellano-Colón, Yolanda González-Laboy, Amarelis De Jesús-Rosario
OBJECTIVE: The objective of this project was to develop a community-academic coalition partnership to conduct community-based participatory research (CBPR) to address health disparities in older adults with chronic conditions living in the Quebrada Arriba community. METHODS: We used the 'Developing and Sustaining CPPR Partnerships: A Skill-Building Curriculum', to create the Quebrada Arriba Community-Academic Partnership (QACAP). We assessed the meetings effectiveness and the CBPR experiences of the coalition members in the community-academic partnership...
June 2017: Puerto Rico Health Sciences Journal
https://www.readbyqxmd.com/read/28611463/dressmakers-show-enhanced-stereoscopic-vision
#3
Adrien Chopin, Dennis M Levi, Daphné Bavelier
The ability to estimate the distance of objects from one's self and from each other is fundamental to a variety of behaviours from grasping objects to navigating. The main cue to distance, stereopsis, relies on the slight offsets between the images derived from our left and right eyes, also termed disparities. Here we ask whether the precision of stereopsis varies with professional experience with precise manual tasks. We measured stereo-acuities of dressmakers and non-dressmakers for both absolute and relative disparities...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28605644/gender-differences-in-positive-life-orientation-among-the-nursing-home-elders-in-china-a-cross-sectional-study
#4
Cheng Jin, Zhibo Zheng, Wei Xian, Ming Bai, Liying Jin, Yuting Li, Xiufei Yang, Yang Sheng, Wensi Ai, Hongbo Liu
INTRODUCTION: Life orientation among the nursing home elders would differ from those of community-dwelling elders due to the different living environment, but may have greater differences in gender. OBJECTIVES: This study was designed to investigate the positive life orientation and explore the potential risk factors including gender disparities among nursing home elders in China. METHODS: This cross-sectional study was conducted in Northeast China...
June 9, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/28603771/magnitude-precision-and-realism-of-depth-perception-in-stereoscopic-vision
#5
Paul B Hibbard, Alice E Haines, Rebecca L Hornsey
Our perception of depth is substantially enhanced by the fact that we have binocular vision. This provides us with more precise and accurate estimates of depth and an improved qualitative appreciation of the three-dimensional (3D) shapes and positions of objects. We assessed the link between these quantitative and qualitative aspects of 3D vision. Specifically, we wished to determine whether the realism of apparent depth from binocular cues is associated with the magnitude or precision of perceived depth and the degree of binocular fusion...
2017: Cognitive Research: Principles and Implications
https://www.readbyqxmd.com/read/28585793/prevalence-and-factors-associated-with-second-eye-cataract-surgery-and-the-trend-in-the-time-interval-between-the-two-eye-surgeries-based-on-the-malaysian-national-eye-database
#6
Shu Fen Ho, Tassha Hilda Bin Adnan, Pik Pin Goh
PURPOSE: To study the prevalence of second eye cataract surgery (SECS), trend in time interval between subsequent surgeries over the years, and factors associated with SECSutilization among patients who underwent cataract surgeries in the Ministry of Health (MOH), Malaysia. DESIGN: Secondary cross-sectional analysis of the Malaysian National Eye Database (NED) data. METHODS: The Malaysian Cataract Surgery Registry collected data on patients who had cataract surgery from 2002-2004 and 2007-2012...
June 1, 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/28559383/spatial-processing-is-frequency-specific-in-auditory-cortex-but-not-in-the-midbrain
#7
Joseph Sollini, Robert Mill, Christian Sumner
The cochlea behaves like a bank of band-pass filters, segregating information into different frequency channels. Some aspects of perception reflect processing within individual channels, but others involve the integration of information across them. One instance of this is sound localization, which improves with increasing bandwidth. The processing of binaural cues for sound location has been extensively studied. However, while the advantage conferred by bandwidth is clear we currently know little about how this additional information is combined to form our percept of space...
May 30, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28514522/use-of-reversible-contraceptive-methods-among-u-s-women-with-physical-or-sensory-disabilities
#8
Justine P Wu, Kimberly S McKee, Michael M McKee, Michelle A Meade, Melissa A Plegue, Ananda Sen
CONTEXT: Women with disabilities experience a higher rate of adverse pregnancy outcomes than women without disabilities. Preventing or delaying pregnancy when that is the best choice for a woman is a critical strategy to reducing pregnancy-related disparities, yet little is known about current contraceptive use among women with disabilities. METHODS: A cohort of 545 reproductive-age women with physical disabilities (i.e., difficulty walking, climbing, dressing or bathing) or sensory disabilities (i...
May 17, 2017: Perspectives on Sexual and Reproductive Health
https://www.readbyqxmd.com/read/28511055/professional-midwifery-in-guatemala-a-qualitative-exploration-of-perceptions-attitudes-and-expectations-among-stakeholders
#9
Anna Summer, Sylvia Guendelman, Edgar Kestler, Dilys Walker
BACKGROUND: Despite recommendations that women give birth with a skilled birth attendant (SBA), 70% of births in Guatemala occur outside health facilities with informally trained traditional birth attendants (TBAs). To increase SBA in rural, indigenous communities, a professional midwifery school accredited by the government is scheduled to open in 2017. Drawing from Filby's model on barriers to the successful integration of professional midwifery into health systems, this paper aims to identify threats - and facilitators-toward professional midwifery's re-introduction in Guatemala...
May 4, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28504938/perceptual-real-time-2d-to-3d-conversion-using-cue-fusion
#10
Thomas Leimkuehler, Petr Kellnhofer, Tobias Ritschel, Karol Myszkowski, Hans-Peter Seidel
We propose a system to infer binocular disparity from a monocular video stream in real-time. Different from classic reconstruction of physical depth in computer vision, we compute perceptually plausible disparity, that is numerically inaccurate, but results in a very similar overall depth impression with plausible overall layout, sharp edges, fine details and agreement between luminance and disparity. We use several simple monocular cues to estimate disparity maps and confidence maps of low spatial and temporal resolution in real-time...
May 11, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28502662/-what-not-detectors-help-the-brain-see-in-depth
#11
Nuno R Goncalves, Andrew E Welchman
Binocular stereopsis is one of the primary cues for three-dimensional (3D) vision in species ranging from insects to primates. Understanding how the brain extracts depth from two different retinal images represents a tractable challenge in sensory neuroscience that has so far evaded full explanation. Central to current thinking is the idea that the brain needs to identify matching features in the two retinal images (i.e., solving the "stereoscopic correspondence problem") so that the depth of objects in the world can be triangulated...
May 22, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28495106/israel-health-and-beyond
#12
REVIEW
Karl Skorecki, Richard Horton
The principle that global human identity and dignity supersede other values is a broadly accepted conviction that guides practice and policies in the realm of human health in most of the world. An assessment of the level of success that Israel has achieved in health, in the face of formidable challenges, including rapid population growth, diverse and often divided ethnic affiliations, and existential security threats, leads us to propose that extension of this principle of global human identity and dignity, together with the objective of a decent society, as overriding values beyond health to other domains of human endeavour within Israel and in its relations with neighbouring peoples, represents an entirely achievable imperative...
May 5, 2017: Lancet
https://www.readbyqxmd.com/read/28494496/sensitivity-to-binocular-disparity-is-reduced-by-mild-traumatic-brain-injury
#13
Gunnar Schmidtmann, Tatiana Ruiz, Alexandre Reynaud, Daniel P Spiegel, Maude Laguë-Beauvais, Robert F Hess, Reza Farivar
Purpose: The impairment of visual functions is one of the most common complaints following mild traumatic brain injury (mTBI). Traumatic brain injury-associated visual deficits include blurred vision, reading problems, and eye strain. In addition, previous studies have found evidence that TBI can diminish early cortical visual processing, particularly for second-order stimuli. We investigated whether cortical processing of binocular disparity is also affected by mTBI. Methods: In order to investigate the influence of mTBI on global stereopsis, we measured the quick Disparity Sensitivity Function (qDSF) in 22 patients with mTBI...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28481654/binocular-summation-and-control-of-intermittent-exotropia
#14
Fatma Yulek, Federico G Velez, Sherwin J Isenberg, Joseph L Demer, Stacy L Pineles
BACKGROUND: Binocular summation (BiS), or improvement in binocular vision exceeding the better eye alone, is affected by strabismus. Being easily measured, BiS may be a useful indicator for subjective outcomes like stereopsis in strabismus. This study aims to investigate the relationship between BiS and measures of control of intermittent exotropia (IXT). METHODS: Patients with IXT were recruited before undergoing strabismus surgery and underwent tests of binocular and monocular high- and low-contrast visual acuity, stereopsis at distance and near, and Newcastle Control Score (NCS), a score developed by incorporating home control and clinic control criteria into a control rating scale...
May 8, 2017: Strabismus
https://www.readbyqxmd.com/read/28459634/american-society-of-clinical-oncology-strategic-plan-for-increasing-racial-and-ethnic-diversity-in-the-oncology-workforce
#15
Karen M Winkfield, Christopher R Flowers, Jyoti D Patel, Gladys Rodriguez, Patricia Robinson, Amit Agarwal, Lori Pierce, Otis W Brawley, Edith P Mitchell, Kimberly T Head-Smith, Dana S Wollins, Daniel F Hayes
In December 2016, the American Society of Clinical Oncology (ASCO) Board of Directors approved the ASCO Strategic Plan to Increase Racial and Ethnic Diversity in the Oncology Workforce. Developed through a multistakeholder effort led by the ASCO Health Disparities Committee, the purpose of the plan is to guide the formal efforts of ASCO in this area over the next three years (2017 to 2020). There are three primary goals: (1) to establish a longitudinal pathway for increasing workforce diversity, (2) to enhance ASCO leadership diversity, and (3) to integrate a focus on diversity across ASCO programs and policies...
May 1, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28428050/socioeconomic-disparity-in-global-burden-of-cataract-an-analysis-for-2013-with-time-trends-since-1990
#16
Lixia Lou, Jingyi Wang, Peifang Xu, Xin Ye, Juan Ye
PURPOSE: To assess socioeconomic disparity in global burden of cataract, by using disability-adjusted life years (DALYs). DESIGN: International, comparative burden-of-disease study. METHODS: Published data on national age-standardized DALY rates caused by cataract and human development index (HDI) between 1990 and 2013 were obtained. The association between age-standardized DALY rates and HDI in 2013 was analyzed. The health-related Gini coefficients and the concentration indexes were calculated to explore the trends in between-country inequality in cataract burden from 1990 to 2013...
April 17, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28350382/a-dataset-of-stereoscopic-images-and-ground-truth-disparity-mimicking-human-fixations-in-peripersonal-space
#17
Andrea Canessa, Agostino Gibaldi, Manuela Chessa, Marco Fato, Fabio Solari, Silvio P Sabatini
Binocular stereopsis is the ability of a visual system, belonging to a live being or a machine, to interpret the different visual information deriving from two eyes/cameras for depth perception. From this perspective, the ground-truth information about three-dimensional visual space, which is hardly available, is an ideal tool both for evaluating human performance and for benchmarking machine vision algorithms. In the present work, we implemented a rendering methodology in which the camera pose mimics realistic eye pose for a fixating observer, thus including convergent eye geometry and cyclotorsion...
March 28, 2017: Scientific Data
https://www.readbyqxmd.com/read/28317909/the-active-side-of-stereopsis-fixation-strategy-and-adaptation-to-natural-environments
#18
Agostino Gibaldi, Andrea Canessa, Silvio P Sabatini
Depth perception in near viewing strongly relies on the interpretation of binocular retinal disparity to obtain stereopsis. Statistical regularities of retinal disparities have been claimed to greatly impact on the neural mechanisms that underlie binocular vision, both to facilitate perceptual decisions and to reduce computational load. In this paper, we designed a novel and unconventional approach in order to assess the role of fixation strategy in conditioning the statistics of retinal disparity. We integrated accurate realistic three-dimensional models of natural scenes with binocular eye movement recording, to obtain accurate ground-truth statistics of retinal disparity experienced by a subject in near viewing...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28293777/engaging-parents-in-preventive-interventions-for-young-children-working-with-cultural-diversity-within-low-income-urban-neighborhoods
#19
Spring Dawson-McClure, Esther J Calzada, Laurie M Brotman
A robust literature documents the impact of poverty on child development and lifelong health, well-being and productivity. Racial and ethnic minority children continue to bear the burden of poverty disproportionately. Evidence-based parenting interventions in early childhood have the potential to attenuate risk attributable to poverty and stress. To reduce racial, ethnic, and socioeconomic disparities in the USA, parenting interventions must be accessible, engaging, and effective for low-income families of color living in large urban centers...
March 14, 2017: Prevention Science: the Official Journal of the Society for Prevention Research
https://www.readbyqxmd.com/read/28272810/deep-learning-for-computational-chemistry
#20
REVIEW
Garrett B Goh, Nathan O Hodas, Abhinav Vishnu
The rise and fall of artificial neural networks is well documented in the scientific literature of both computer science and computational chemistry. Yet almost two decades later, we are now seeing a resurgence of interest in deep learning, a machine learning algorithm based on multilayer neural networks. Within the last few years, we have seen the transformative impact of deep learning in many domains, particularly in speech recognition and computer vision, to the extent that the majority of expert practitioners in those field are now regularly eschewing prior established models in favor of deep learning models...
March 8, 2017: Journal of Computational Chemistry
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