2,279 results match your criteria collected manually


[Deep learning based lesion detection from anterior segment optical coherence tomography images and its application in the diagnosis of keratoconus].

Zhonghua Yan Ke Za Zhi 2021 Jun;57(6):447-453

Qingdao Eye Hospital, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao 266071, China.

To developed an image analysis system of anterior segment optical coherence tomography (AS-OCT) examination results based on deep learning technology, and to evaluate its effect in identifying various types of corneal pathologies and quantified indices. A total of 4 026 patients (5 617 eyes), including 1 977 males and 2 049 females, aged (45±23) years, were enrolled in Qingdao Eye Hospital from January 2011 to August 2019. The AS-OCT images were used as a training dataset, which were labeled with location information of 16 corneal pathologies (including corneal epithelial defect, corneal epithelial thickening, corneal thinning and so on) by clinical experts, as well as the tissue stratification of the corneal epithelium and stroma. Read More

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Simple electrophysiological predictor of QRS change induced by cardiac resynchronization therapy: a novel marker of complete left bundle branch block.

Heart Rhythm 2021 Jun 4. Epub 2021 Jun 4.

Department of Cardiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic; 2(nd) Department of Internal Cardiovascular Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic.

Background: QRS complex shortening by cardiac resynchronization therapy (CRT) has been associated with improved outcomes.

Objective: We hypothesized that the absence of QRS duration (QRSd) prolongation by right ventricular mid-septal pacing (RVP) may indicate a complete left bundle branch block (cLBBB).

Methods: We prospectively collected 12-lead surface ECG and intracardiac electrograms during CRT implant procedures. Read More

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Clinical Validation of the Champagne Algorithm for Epilepsy Spike Localization.

Front Hum Neurosci 2021 20;15:642819. Epub 2021 May 20.

National Engineering Research Center for E-Learning, Central China Normal University, Wuhan, China.

Magnetoencephalography (MEG) is increasingly used for presurgical planning in people with medically refractory focal epilepsy. Localization of interictal epileptiform activity, a surrogate for the seizure onset zone whose removal may prevent seizures, is challenging and depends on the use of multiple complementary techniques. Accurate and reliable localization of epileptiform activity from spontaneous MEG data has been an elusive goal. Read More

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Long Term Safety and Efficacy of Sub-Lingual Ketamine Troches / Lozenges in Chronic Non-Malignant Pain Management.

Intern Med J 2021 Jun 6. Epub 2021 Jun 6.

Pain Management Centre, Royal Prince Alfred Hospital, Missenden Road, Camperdown, NSW, Australia, 2050.

Introduction: Chronic non-malignant pain is a disabling condition that results in a reduction in function and quality of life when inadequately managed. Sub-lingual ketamine has been shown to be efficacious for use in chronic pain. Despite its use for decades in chronic non-malignant pain, there is no published long-term data on safety, side effects or adverse drug reactions. Read More

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Association of postoperative recurrence with radiological and clinicopathological features in patients with stage IA-IIA lung adenocarcinoma.

Eur J Radiol 2021 May 29;141:109802. Epub 2021 May 29.

Department of Radiology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Key Laboratory of Cancer Prevention and Therapy, Huanhuxi Road, Hexi District, Tianjin, 300060, China. Electronic address:

Objectives: To retrospectively investigate whether radiological and clinicopathological characteristics were associated with the presence of stage IA-IIA lung adenocarcinoma in patients at high risk for a postoperative recurrence.

Materials And Methods: Three hundred twelve patients with biopsy-proven node-negative early-stage (IA-IIA) lung adenocarcinoma met the inclusion criteria for this study. Demographics data and histopathological findings were collected from medical records. Read More

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Schizophrenia on Turkish Twitter: an exploratory study investigating misuse, stigmatization and trivialization.

Soc Psychiatry Psychiatr Epidemiol 2021 Jun 5. Epub 2021 Jun 5.

Psychiatry Department, Karadeniz Ereğli State Hospital, Eregli, Zonguldak, Turkey.

Purpose: This study aims to investigate use and misuse of the word 'schizophrenia' and its derivatives to assess the prevalence of stigmatizing and trivializing attitudes and the meanings attributed to the condition on Turkish Twitter.

Methods: Using R programming language, we collected Turkish Twitter posts containing the terms used for schizophrenia in Turkish through Twitter's Search API over a 47-day period between July and June 2019. After removing retweets, we randomly sampled 3000 tweets and manually categorized them in three dimensions: use type (metaphorical/non-metaphorical), topic and attitude. Read More

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AraCust: a Saudi Telecom Tweets corpus for sentiment analysis.

PeerJ Comput Sci 2021 20;7:e510. Epub 2021 May 20.

Department of Computer Science, Durham University, Durham, United Kingdom.

Comparing Arabic to other languages, Arabic lacks large corpora for Natural Language Processing (Assiri, Emam & Al-Dossari, 2018; Gamal et al., 2019). A number of scholars depended on translation from one language to another to construct their corpus (Rushdi-Saleh et al. Read More

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The private life of : observation of its attachments and population dynamics.

J Plankton Res 2021 May-Jun;43(3):492-496. Epub 2021 Apr 19.

Département de géomatique appliquée, Université de Sherbrooke, 2500, boul. de l'Université, Sherbrooke, Québec J1K 2R1, Canada.

Phytoplankton images were collected using an Imaging Flow Cytobot moored in the mesotrophic lake Lac Montjoie (Quebec, Canada). -an unusual dinoflagellate genus-was found during manual classification of the images into taxonomic groups while building an automated classifier. 's particularity is that while it can take a typical motile dinoflagellate form, it is thought to exist primarily as an immotile photosynthetically competent parasitic cyst in the shape of a crescent moon. Read More

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Identifying the histologic subtypes of non-small cell lung cancer with computed tomography imaging: a comparative study of capsule net, convolutional neural network, and radiomics.

Quant Imaging Med Surg 2021 Jun;11(6):2756-2765

School of Biomedical Engineering, Capital Medical University, Beijing, China.

Background: Discriminating the subtypes of non-small cell lung cancer (NSCLC) based on computed tomography (CT) images is a challenging task for radiologists. Although several machine learning methods such as radiomics, and deep learning methods such as convolutional neural networks (CNNs) have been proposed to explore the problem, large sample sizes are required for effective training, and this may not be easily achieved in single-center datasets.

Methods: In this study, an automated subtype recognition model with capsule net (CapsNet) was developed for the subtype discrimination of NSCLC. Read More

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HIV testing in patients who are HCV positive: Compliance with CDC guidelines in a large healthcare system.

PLoS One 2021 2;16(6):e0252412. Epub 2021 Jun 2.

MedStar Health Research Institute, MedStar Health, Hyattsville, MD, United States of America.

Background: There are approximately 300,000 people in the United States who are co-infected with HIV and HCV. Several organizations recommend that individuals who are HCV infected, as well as persons over the age of 13, should be HIV tested. Comorbidities associated with HCV can be reduced with early identification of HIV. Read More

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Essential Oils from Residual Foliage of Forest Tree and Shrub Species: Yield and Antioxidant Capacity.

Molecules 2021 May 28;26(11). Epub 2021 May 28.

Centre for the Development of Renewable Energies-Centre for Energy, Environmental and Technological Research, CEDER-CIEMAT, Autovía de Navarra A-15, Salida 56, 42290 Lubia, Spain.

Increasing applications and markets for essential oils could bring new opportunities for cost-effective and sustainable management of unused forestry biomass; however, better knowledge of the production and application of such essential oils is necessary. The objective of this work is to contribute to greater knowledge of the essential oil production on a pilot scale from foliage biomass of wild shrubs and tree residues produced in some forestry enhancement operations and to study their antioxidant capacity (ORAC-oxygen radical absorbance capacity). Fresh biomass (twigs) of seven species (, , , , , , and ) was manually collected in Spain in two different periods and was ground at 30 mm and distilled in a 30 L stainless steel still with saturated steam. Read More

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Trends in Catastrophic Occupational Incidents among Electrical Contractors, 2007-2013.

Int J Environ Res Public Health 2021 May 12;18(10). Epub 2021 May 12.

Sid and Reva Dewberry Department of Civil, Environmental and Infrastructure Engineering, Volgenau School of Engineering, George Mason University, Fairfax, VA 22030, USA.

This study used methodologies of descriptive and quantitative statistics to identify the contributing factors most affecting occupational accident outcomes among electrical contracting enterprises, given an accident occurred. Accident reports were collected from the Occupational Safety and Health Administration's fatality and catastrophe database. To ensure the reliability of the data, the team manually codified more than 600 incidents through a comprehensive content analysis using injury-classification standards. Read More

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Assessing COVID-19 Vaccine Hesitancy, Confidence, and Public Engagement: A Global Social Listening Study.

J Med Internet Res 2021 Jun 11;23(6):e27632. Epub 2021 Jun 11.

Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, United Kingdom.

Background: Monitoring public confidence and hesitancy is crucial for the COVID-19 vaccine rollout. Social media listening (infoveillance) can not only monitor public attitudes on COVID-19 vaccines but also assess the dissemination of and public engagement with these opinions.

Objective: This study aims to assess global hesitancy, confidence, and public engagement toward COVID-19 vaccination. Read More

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The role of dermatopontin in cell adhesion in bovine placenta during early-mid pregnancy and parturition - Pilot study.

Theriogenology 2021 Sep 21;171:130-136. Epub 2021 May 21.

Department of Biochemistry, Faculty of Veterinary Medicine, University of Life Science in Lublin, Akademicka Street 12, 20-033, Lublin, Poland. Electronic address:

Dermatopontin (DPT) is a small protein molecule thought to have a role in the formation of the extracellular architecture and adhesion. The aim of the study was to confirm the presence of DPT and to examine its role in placental cell adhesion during pregnancy, at parturition and postpartum in cows. Placental tissue samples were obtained at abattoir from healthy pregnant cows (n = 6) while parturient samples were collected during caesarian section and retrospectively divided into released up to 6 h (R; n = 5) and not released up to 6 h (NR; n = 4) foetal membranes. Read More

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September 2021

"Cognitive Peer Coaching"- A workplace-based faculty development approach for problem- based learning facilitators: A qualitative study.

J Pak Med Assoc 2021 Mar;71(3):868-876

Department of Medical Education, Riphah International University, Rawalpindi, Pakistan.

Objective: To explore the factors affecting the learning process of novice problem-based learning facilitators trained through Cognitive Peer Coaching.

Methods: The qualitative study with phenomenological design was conducted at the Islamic International Medical College, Riphah International University, Islamabad, Pakistan, from March to August 2018, and comprised problem-based learning facilitators, experts and novices who were given orientation about cognitive peer coaching through workshops. Novice facilitators were trained by experts through cognitive peer coaching cycle comprising pre-observation, observation and post-observation phases following socio-cognitive apprenticeship theory based on modelling, coaching, scaffolding, articulation, reflection and exploration. Read More

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Hematologic values in domestic pigeons naturally infected with Mycobacterium avium subsp. avium.

Vet Clin Pathol 2021 May 27. Epub 2021 May 27.

Razi Vaccine and Serum Research Institute, Karaj, Iran.

Avian mycobacteriosis is an important disease of birds and is most often caused by Mycobacterium avium or Mycobacterium genavense. However, little information on the hematologic changes associated with this infectious disease in pigeons has been published. The aim of this investigation was to compare the hematologic parameters of domestic pigeons (Columba livia var. Read More

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Perceived academic-related sources of stress among graduate nursing students in a Jamaican University.

Nurse Educ Pract 2021 May 16;53:103088. Epub 2021 May 16.

The UWI School of Nursing, Mona, Jamaica.

Background: Graduate education is essential for the improvement of professions by facilitating advancements in career paths, personal growth and enhancing a country's economy. Graduate students frequently view graduate education as moderate to very stressful and this can have a negative impact on their lives. Stress can result in impaired coping, poor academic performance and reduction in cognitive functioning, resulting in the antithesis of academic success. Read More

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Disambiguation of Medical Abbreviations in French with Supervised Methods.

Stud Health Technol Inform 2021 May;281:313-317

CNRS, Univ Lille, UMR 8163 - STL, F-59000 Lille, France.

Abbreviations are very frequent in medical and health documents but they convey opaque semantics. The association with their expanded forms, like Chronic obstructive pulmonary disease for COPD, may help their understanding. Yet, several abbreviations are ambiguous and have expanded forms possible. Read More

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Dataset for localization and classification of Medjool dates in digital images.

Data Brief 2021 Jun 8;36:107116. Epub 2021 May 8.

Facultad de Ingeniería, Universidad Autónoma de Baja California (UABC), Mexicali, B.C., México.

Nowadays, harvesting, sorting, and packaging fruit and vegetables are still done manually, despite the hard work this represents. The features that experts commonly use to sorting the date palm fruit are size, color, shape, and texture. Recently, it has started to design and develop artificial vision systems that consider the criteria of size, color, shape, and texture to automate these processes. Read More

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Comparing the accuracy of ICD-based severity estimates to trauma registry-based injury severity estimates for predicting mortality outcomes.

Injury 2021 May 16. Epub 2021 May 16.

Centre for Healthcare Transformation, Australian Centre for Health Services Innovation (AusHSI), Queensland University of Technology, Brisbane, Queensland, Australia; Jamieson Trauma Institute, Royal Brisbane and Women's Hospital, Metro North Hospital and Health Service, Herston, Queensland, Australia.

Introduction: Trauma registries have been used internationally for several decades to measure the quality of trauma care between hospitals. Given the significant costs involved in establishing and maintaining trauma registries, and increasing availability of routinely collected, linked health data describing a patient's journey (and inherent cost savings in data re-use), there is significant interest in development of integrated, comprehensive trauma data repositories. However, approaches to estimating injury severity using routinely collected data would need to be developed if routinely collected hospital data were to be used as an alternative/supplement to registries. Read More

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Neural Machine Translation-Based Automated Current Procedural Terminology Classification System Using Procedure Text: Development and Validation Study.

JMIR Form Res 2021 May 26;5(5):e22461. Epub 2021 May 26.

Department of Learning Health Sciences, University of Michigan, Ann Arbor, MI, United States.

Background: Administrative costs for billing and insurance-related activities in the United States are substantial. One critical cause of the high overhead of administrative costs is medical billing errors. With advanced deep learning techniques, developing advanced models to predict hospital and professional billing codes has become feasible. Read More

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Computer-aided detection of colorectal polyps using a newly generated deep convolutional neural network: from development to first clinical experience.

Eur J Gastroenterol Hepatol 2021 May 21. Epub 2021 May 21.

Department of Internal Medicine 1, Division of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, Friedrich-Alexander-University, Erlangen-Nuernberg, Germany Department of Gastroenterology, Physiopathology and Endoscopy of the Gastrointestinal Tract, Central Hospital Bolzano, Bolzano, Italy Gastroenterology Outpatient Clinic, Altötting Department of Internal Medicine 3, Division of Gastroenterology, Klinikum Aschaffenburg, Aschaffenburg, Germany Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands.

Aim: The use of artificial intelligence represents an objective approach to increase endoscopist's adenoma detection rate (ADR) and limit interoperator variability. In this study, we evaluated a newly developed deep convolutional neural network (DCNN) for automated detection of colorectal polyps ex vivo as well as in a first in-human trial.

Methods: For training of the DCNN, 116 529 colonoscopy images from 278 patients with 788 different polyps were collected. Read More

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Integrated approach for effective debris mapping in glacierized regions of Chandra River Basin, Western Himalayas, India.

Sci Total Environ 2021 Jul 17;779:146492. Epub 2021 Mar 17.

School of Environmental Sciences, Jawahar Lal Nehru University, Delhi, India. Electronic address:

The mapping of debris in glacierized terrain is required for managing the water resources, glacier mass-balance studies and the monitoring of glacier health. Two types of debris i.e. Read More

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Helminths of the Antarctic dragonfish, Parachaenichthys charcoti (Perciformes, Notothenioidei, Bathydraconidae) Studied near Galindez Island (Argentine Islands, West Antarctica).

Acta Parasitol 2021 May 22. Epub 2021 May 22.

I. I. Schmalhausen Institute of Zoology NAS of Ukraine, 15, Bogdan Khmelnytsky Street, Kyiv, 01030, Ukraine.

Purpose: The Antarctic dragonfish, Parachaenichthys charcoti is a notothenioid teleost fish endemic to the Southern Ocean surrounding Antarctica. It is a relatively rare fish species; therefore, published data on the parasite communities of P. charcoti are limited. Read More

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RNAcmap: A Fully Automatic Pipeline for Predicting Contact Maps of RNAs by Evolutionary Coupling Analysis.

Bioinformatics 2021 May 22. Epub 2021 May 22.

Institute for Glycomics and School of Information and Communication Technology, Griffith University, Parklands Dr. Southport, QLD 4222, Australia.

Motivation: The accuracy of RNA secondary and tertiary structure prediction can be significantly improved by using structural restraints derived from evolutionary coupling or direct coupling analysis. Currently, these coupling analyses relied on manually curated multiple sequence alignments collected in the Rfam database, which contains 3016 families. By comparison, millions of non-coding RNA sequences are known. Read More

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Dietary Practices among Children with Early Childhood Caries and the Associated Factors: A Qualitative Study.

Int J Paediatr Dent 2021 May 22. Epub 2021 May 22.

Department of Dental Public Health, Faculty of Dentistry, University of Toronto, Toronto, Canada.

Background: Parents play a vital role in their children's dietary habits. A comprehensive understanding of the perspectives of parents of children with early childhood caries (ECC) is required for prevention program planning.

Aim: To describe the parental perspective of the dietary habits of children with ECC. Read More

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Analysis of outcomes of single-unit cord blood transplantation with umbilical cord blood units processed with two different red blood cell sedimentation reagents.

Transfusion 2021 May 20. Epub 2021 May 20.

St. Louis Cord Blood Bank, SSM Health Cardinal Glennon Children's Hospital, St Louis, Missouri, USA.

Background: Various processing methodologies are routinely used to reduce volume and red blood cell content of umbilical cord blood (UCB) units collected for hematopoietic stem cell transplantation. There is limited information regarding effects of UCB processing techniques on clinical outcomes.

Study Design And Methods: Retrospective data analysis compared laboratory and clinical outcomes following single-unit UCB transplantation performed between 1999 and 2015. Read More

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Identification and utilization of genetic determinants of trait measurement errors in image-based, high-throughput phenotyping.

Plant Cell 2021 May 20. Epub 2021 May 20.

Department of Agronomy, Iowa State University, Ames, Iowa 50011, USA.

The accuracy of trait measurements greatly affects the quality of genetic analyses. During automated phenotyping, trait measurement errors, i.e. Read More

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Utility of routinely collected electronic health records data to support effectiveness evaluations in inflammatory bowel disease: a pilot study of tofacitinib.

BMJ Health Care Inform 2021 May;28(1)

Bakar Computational Health Sciences Institute, University of California, San Francisco, San Francisco, California, USA

Objectives: Electronic health records (EHR) are receiving growing attention from regulators, biopharmaceuticals and payors as a potential source of real-world evidence. However, their suitability for the study of diseases with complex activity measures is unclear. We sought to evaluate the use of EHR data for estimating treatment effectiveness in inflammatory bowel disease (IBD), using tofacitinib as a use case. Read More

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Determinants of healthcare use based on the Andersen model: a study protocol for a systematic review of longitudinal studies.

BMJ Open 2021 05 19;11(5):e044435. Epub 2021 May 19.

Department of Health Economics and Health Services Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.

Introduction: A previous systematic review published in 2012 focused on the use of health services based on the Andersen model. Extending this review, we will exclusively focus on systematically synthesising longitudinal studies examining the determinants of healthcare use based on the Andersen model. Therefore, our aim of this systematic review is to provide an overview of longitudinal observational studies investigating the predictors of healthcare use explicitly using this model. Read More

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