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https://www.readbyqxmd.com/read/28431420/generative-retrieval-improves-learning-and-retention-of-cardiac-anatomy-using-transesophageal-echocardiography
#1
Amanda M Kleiman, Katherine T Forkin, Allison J Bechtel, Stephen R Collins, Jennie Z Ma, Edward C Nemergut, Julie L Huffmyer
BACKGROUND: Transesophageal echocardiography (TEE) is a valuable monitor for patients undergoing cardiac and noncardiac surgery as it allows for evaluation of cardiovascular compromise in the perioperative period. It is challenging for anesthesiology residents and medical students to learn to use and interpret TEE in the clinical environment. A critical component of learning to use and interpret TEE is a strong grasp of normal cardiovascular ultrasound anatomy. METHODS: Fifteen fourth-year medical students and 15 post-graduate year (PGY) 1 and 2 anesthesiology residents without prior training in cardiac anesthesia or TEE viewed normal cardiovascular anatomy TEE video clips; participants were randomized to learning cardiac anatomy in generative retrieval (GR) and standard practice (SP) groups...
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28431275/learning-non-rigid-deformations-for-robust-constrained-point-based-registration-in-image-guided-mr-trus-prostate-intervention
#2
John A Onofrey, Lawrence H Staib, Saradwata Sarkar, Rajesh Venkataraman, Cayce B Nawaf, Preston C Sprenkle, Xenophon Papademetris
Accurate and robust non-rigid registration of pre-procedure magnetic resonance (MR) imaging to intra-procedure trans-rectal ultrasound (TRUS) is critical for image-guided biopsies of prostate cancer. Prostate cancer is one of the most prevalent forms of cancer and the second leading cause of cancer-related death in men in the United States. TRUS-guided biopsy is the current clinical standard for prostate cancer diagnosis and assessment. State-of-the-art, clinical MR-TRUS image fusion relies upon semi-automated segmentations of the prostate in both the MR and the TRUS images to perform non-rigid surface-based registration of the gland...
April 12, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28431087/a-method-for-learning-a-sparse-classifier-in-the-presence-of-missing-data-for-high-dimensional-biological-datasets
#3
Kristen Severson, Brinda Monian, J Christopher Love, Richard D Braatz
Motivation: This work addresses two common issues in building classification models for biological or medical studies: learning a sparse model, where only a subset of a large number of possible predictors is used, and training in the presence of missing data. This work focuses on supervised generative binary classification models, specifically linear discriminant analysis (LDA). The parameters are determined using an expectation maximization algorithm to both address missing data and introduce priors to promote sparsity...
April 18, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28430628/critical-role-of-matrix-metallopeptidase-9-in-postoperative-cognitive-dysfunction-and-age-dependent-cognitive-decline
#4
Jiangjiang Bi, Weiran Shan, Ailin Luo, Zhiyi Zuo
BACKGROUND: Postoperative cognitive dysfunction (POCD) is a significant clinical syndrome. Neuroinflammation is an important pathological process for POCD. However, it is not clear how systemic inflammation induced by surgery on peripheral tissues or organs is transmitted into the brain. We determined whether matrix metallopeptidase 9 (MMP9), a protein that can increase blood-brain barrier permeability, is critical in this transmission. The role of MMP9 in age-dependent cognitive decline was also determined...
February 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430318/teaching-medical-students-ultrasound-guided-vascular-access-which-learning-method-is-best
#5
Alwin Lian, James C R Rippey, Peter J Carr
INTRODUCTION: Ultrasound is recommended to guide insertion of peripheral intravenous vascular cannulae (PIVC) where difficulty is experienced. Ultrasound machines are now common-place and junior doctors are often expected to be able to use them. The educational standards for this skill are highly varied, ranging from no education, to self-guided internet-based education, to formal, face-to-face traditional education. In an attempt to decide which educational technique our institution should introduce, a small pilot trial comparing educational techniques was designed...
April 20, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28430266/machine-learning-approach-to-oam-beam-demultiplexing-via-convolutional-neural-networks
#6
Timothy Doster, Abbie T Watnik
Orbital angular momentum (OAM) beams allow for increased channel capacity in free-space optical communication. Conventionally, these OAM beams are multiplexed together at a transmitter and then propagated through the atmosphere to a receiver where, due to their orthogonality properties, they are demultiplexed. We propose a technique to demultiplex these OAM-carrying beams by capturing an image of the unique multiplexing intensity pattern and training a convolutional neural network (CNN) as a classifier. This CNN-based demultiplexing method allows for simplicity of operation as alignment is unnecessary, orthogonality constraints are loosened, and costly optical hardware is not required...
April 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28430181/supervised-learning-and-dimension-reduction-techniques-for-quantification-of-retinal-fluid-in-optical-coherence-tomography-images
#7
A Breger, M Ehler, H Bogunovic, S M Waldstein, A-M Philip, U Schmidt-Erfurth, B S Gerendas
PurposeThe purpose of the present study is to develop fast automated quantification of retinal fluid in optical coherence tomography (OCT) image sets.MethodsWe developed an image analysis pipeline tailored towards OCT images that consists of five steps for binary retinal fluid segmentation. The method is based on feature extraction, pre-segmention, dimension reduction procedures, and supervised learning tools.ResultsFluid identification using our pipeline was tested on two separate patient groups: one associated to neovascular age-related macular degeneration, the other showing diabetic macular edema...
April 21, 2017: Eye
https://www.readbyqxmd.com/read/28430147/suitability-of-strain-gage-sensors-for-integration-into-smart-sport-equipment-a-golf-club-example
#8
Anton Umek, Yuan Zhang, Sašo Tomažič, Anton Kos
Wearable devices and smart sport equipment are being increasingly used in amateur and professional sports. Smart sport equipment employs various sensors for detecting its state and actions. The correct choice of the most appropriate sensor(s) is of paramount importance for efficient and successful operation of sport equipment. When integrated into the sport equipment, ideal sensors are unobstructive, and do not change the functionality of the equipment. The article focuses on experiments for identification and selection of sensors that are suitable for the integration into a golf club with the final goal of their use in real time biofeedback applications...
April 21, 2017: Sensors
https://www.readbyqxmd.com/read/28429909/association-between-maternal-vitamin-d-status-during-pregnancy-and-offspring-cognitive-function-during-childhood-and-adolescence
#9
Sargoor R Veena, Ghattu V Krishnaveni, Krishnamachari Srinivasan, Kotrangada P Thajna, Bhavya G Hegde, Catharine R Gale, Caroline Hd Fall
BACKGROUND AND OBJECTIVES: Animal studies have demonstrated poor cognitive outcomes in offspring in relation to maternal vitamin D deficiency before and/or during pregnancy. Human studies linking maternal vitamin D status during pregnancy with offspring cognitive function are limited. We aimed to test the hypothesis that lower maternal vitamin D status during pregnancy is associated with poor offspring cognitive ability in an Indian population. METHODS AND STUDY DESIGN: Cognitive function was assessed in children from the Mysore Parthenon birth cohort during childhood (age 9-10 years; n=468) and adolescence (age 13-14 years; n=472) using 3 core tests from the Kaufman Assessment Battery for children and additional tests measuring learning, long-term retrieval/ storage, short-term memory, reasoning, verbal fluency, visuo-spatial ability, and attention and concentration...
May 2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28427996/no-evidence-that-environmental-enrichment-during-rearing-protects-against-cocaine-behavioral-effects-but-as-an-intervention-reduces-an-already-established-cocaine-conditioned-place-preference
#10
E Galaj, A Shukur, M Manuszak, K Newman, R Ranaldi
OBJECTIVES: Environmental enrichment (EE) produces differential effects on psychostimulant-related behaviors. Therefore, we investigated whether EE introduced during rearing and before cocaine exposure versus in adulthood and after cocaine exposure might be a determinant. METHODS: In Experiment 1, rats reared with EE or not (non-EE) were conditioned with cocaine (5, 10 or 20mg/kg) in one compartment of a CPP apparatus and saline in the other, and later tested for cocaine CPP...
April 17, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28427569/chronic-low-level-exposure-to-the-common-seafood-toxin-domoic-acid-causes-cognitive-deficits-in-mice
#11
Kathi A Lefebvre, Preston S Kendrick, Warren Ladiges, Emma M Hiolski, Bridget E Ferriss, Donald R Smith, David J Marcinek
The consumption of one meal of seafood containing domoic acid (DA) at levels high enough to induce seizures can cause gross histopathological lesions in hippocampal regions of the brain and permanent memory loss in humans and marine mammals. Seafood regulatory limits have been set at 20mgDA/kg shellfish to protect human consumers from symptomatic acute exposure, but the effects of repetitive low-level asymptomatic exposure remain a critical knowledge gap. Recreational and Tribal-subsistence shellfish harvesters are known to regularly consume low levels of DA...
April 2017: Harmful Algae
https://www.readbyqxmd.com/read/28427295/development-of-visuo-haptic-transfer-for-object-recognition-in-typical-preschool-and-school-aged-children
#12
Giulia Purpura, Giovanni Cioni, Francesca Tinelli
Object recognition is a long and complex adaptive process and its full maturation requires combination of many different sensory experiences as well as cognitive abilities to manipulate previous experiences in order to develop new percepts and subsequently to learn from the environment. It is well recognized that the transfer of visual and haptic information facilitates object recognition in adults, but less is known about development of this ability. In this study, we explored the developmental course of object recognition capacity in children using unimodal visual information, unimodal haptic information, and visuo-haptic information transfer in children from 4 years to 10 years and 11 months of age...
April 20, 2017: Child Neuropsychology: a Journal on Normal and Abnormal Development in Childhood and Adolescence
https://www.readbyqxmd.com/read/28427021/risk-factors-for-learning-problems-in-youth-with-psychogenic-non-epileptic-seizures
#13
Julia Doss, Rochelle Caplan, Prabha Siddarth, Brenda Bursch, Tatiana Falcone, Marcy Forgey, Kyle Hinman, W Curt LaFrance, Rebecca Laptook, Richard Shaw, Deborah Weisbrot, Matthew Willis, Sigita Plioplys
OBJECTIVES: This study examined the risk factors for learning problems (LP) in pediatric psychogenic non-epileptic seizures (PNES) and their specificity by comparing psychopathology, medical, cognitive/linguistic/achievement, bullying history, and parent education variables between subjects with PNES with and without LP and between subjects with PNES and siblings with LP. METHODS: 55 subjects with PNES and 35 siblings, aged 8-18years, underwent cognitive, linguistic, and achievement testing, and completed somatization and anxiety sensitivity questionnaires...
April 17, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28426522/patient-safety-culture-survey-in-pediatric-complex-care-settings-a-factor-analysis
#14
Amanda J Hessels, Meghan Murray, Bevin Cohen, Elaine L Larson
OBJECTIVES: Children with complex medical needs are increasing in number and demanding the services of pediatric long-term care facilities (pLTC), which require a focus on patient safety culture (PSC). However, no tool to measure PSC has been tested in this unique hybrid acute care-residential setting. The objective of this study was to evaluate the psychometric properties of the Nursing Home Survey on Patient Safety Culture tool slightly modified for use in the pLTC setting. METHODS: Factor analyses were performed on data collected from 239 staff at 3 pLTC in 2012...
April 19, 2017: Journal of Patient Safety
https://www.readbyqxmd.com/read/28426457/race-differences-in-initial-presentation-early-treatment-and-1-year-outcomes-of-pediatric-crohn-s-disease-results-from-the-improvecarenow-network
#15
Jennifer L Dotson, Michele Cho, Josh Bricker, Michael D Kappelman, Deena J Chisolm, Gitit Tomer, Wallace V Crandall
BACKGROUND: Racially disparate care has been shown to contribute to suboptimal health care outcomes for minorities. Using the ImproveCareNow network, we investigated differences in management and outcomes of pediatric patients with Crohn's disease at diagnosis and 1-year postdiagnosis. METHODS: ImproveCareNow is a learning health network for pediatric inflammatory bowel disease. It contains prospective, longitudinal data from outpatient encounters. This retrospective study included all patients with Crohn's disease ≤21 years, September 2006 to October 2014, with the first recorded encounter ≤90 days from date of diagnosis and an encounter 1 year ±60 days...
May 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28425947/deep-count-fruit-counting-based-on-deep-simulated-learning
#16
Maryam Rahnemoonfar, Clay Sheppard
Recent years have witnessed significant advancement in computer vision research based on deep learning. Success of these tasks largely depends on the availability of a large amount of training samples. Labeling the training samples is an expensive process. In this paper, we present a simulated deep convolutional neural network for yield estimation. Knowing the exact number of fruits, flowers, and trees helps farmers to make better decisions on cultivation practices, plant disease prevention, and the size of harvest labor force...
April 20, 2017: Sensors
https://www.readbyqxmd.com/read/28424613/the-relationship-between-cerebral-small-vessel-disease-hippocampal-volume-and-cognitive-functioning-in-patients-with-copd-an-mri-study
#17
Fiona A H M Cleutjens, Rudolf W H M Ponds, Martijn A Spruit, Saartje Burgmans, Heidi I L Jacobs, Ed H B M Gronenschild, Julie Staals, Frits M E Franssen, Jeanette B Dijkstra, Lowie E G W Vanfleteren, Paul A Hofman, Emiel F M Wouters, Daisy J A Janssen
The neural correlates of cognitive impairment in chronic obstructive pulmonary disease (COPD) are not yet understood. Structural brain abnormalities could possibly be associated with the presence of cognitive impairment through cigarette smoke, inflammation, vascular disease, or hypoxemia in these patients. This study aimed to investigate whether macrostructural brain magnetic resonance imaging (MRI) features of cerebral small vessel disease (SVD) and hippocampal volume (HCV) are related to cognitive performance in patients with COPD...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28424596/non-interfering-effects-of-active-post-encoding-tasks-on-episodic-memory-consolidation-in-humans
#18
Samarth Varma, Atsuko Takashima, Sander Krewinkel, Maaike van Kooten, Lily Fu, W Pieter Medendorp, Roy P C Kessels, Sander M Daselaar
So far, studies that investigated interference effects of post-learning processes on episodic memory consolidation in humans have used tasks involving only complex and meaningful information. Such tasks require reallocation of general or encoding-specific resources away from consolidation-relevant activities. The possibility that interference can be elicited using a task that heavily taxes our limited brain resources, but has low semantic and hippocampal related long-term memory processing demands, has never been tested...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28424062/health-system-factors-influencing-management-of-multidrug-resistant-tuberculosis-in-four-european-union-countries-learning-from-country-experiences
#19
Gerard de Vries, Svetla Tsolova, Laura F Anderson, Agnes C Gebhard, Einar Heldal, Vahur Hollo, Laura Sánchez-Cambronero Cejudo, Daniela Schmid, Bert Schreuder, Tonka Varleva, Marieke J van der Werf
BACKGROUND: In the European Union and European Economic Area only 38% of multidrug-resistant tuberculosis patients notified in 2011 completed treatment successfully at 24 months' evaluation. Socio-economic factors and patient factors such as demographic characteristics, behaviour and attitudes are associated with treatment outcomes. Characteristics of healthcare systems also affect health outcomes. This study was conducted to identify and better understand the contribution of health system components to successful treatment of multidrug-resistant tuberculosis...
April 19, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28423919/joint-attention-difficulties-in-autistic-adults-an-interactive-eye-tracking-study
#20
Nathan Caruana, Heidi Stieglitz Ham, Jon Brock, Alexandra Woolgar, Nadine Kloth, Romina Palermo, Genevieve McArthur
Joint attention - the ability to coordinate attention with a social partner - is critical for social communication, learning and the regulation of interpersonal relationships. Infants and young children with autism demonstrate impairments in both initiating and responding to joint attention bids in naturalistic settings. However, little is known about joint attention abilities in adults with autism. Here, we tested 17 autistic adults and 17 age- and nonverbal intelligence quotient-matched controls using an interactive eye-tracking paradigm in which participants initiated and responded to joint attention bids with an on-screen avatar...
April 1, 2017: Autism: the International Journal of Research and Practice
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