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https://www.readbyqxmd.com/read/28937373/radiological-tests-versus-pathological-diagnostics-complimentary-or-antagonistic-relationship-the-experience-of-a-tertiary-hospital
#1
Maria A Arafah, Hala M Kfoury
INTRODUCTION: Early detection of breast cancer plays a pivotal role in the outcome of the disease. Diagnostic modalities encompass radiological and pathological findings. The aim of this study is to evaluate the correlation between the results of these two modalities in a tertiary hospital. MATERIALS AND METHODS: From a total of 180 patients, 203 ultrasound-guided breast core needle biopsies (US-CNBs) were included in this study over a period of a year (May 2015 - May 2016)...
July 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28935008/coccidioidomycosis-in-an-indoor-housed-rhesus-macaque-macaca-mulatta
#2
Mila C Kundu, Michael A Ringenberg, Denise L d'Epagnier, Heather L Haag, Sean Maguire
Coccidioides spp. are saprophytic, dimorphic fungi that are endemic to arid climates, are capable of infecting many species, and result in diverse clinical presentations. An indoor-housed laboratory rhesus macaque presented with weight loss and decreased activity and appetite. During the diagnostic evaluation, a bronchiolar-alveolar pattern in the cranial lung lobes, consistent with bronchopneumonia, was noted on radiographs. Given the poor prognosis, the macaque was euthanized. Confirming the radiographic assessment, gross necropsy findings included multifocal to coalescing areas of consolidation in the right and left cranial lung lobes...
October 1, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28934225/harmonizing-the-pixel-size-in-retrospective-computed-tomography-radiomics-studies
#3
Dennis Mackin, Xenia Fave, Lifei Zhang, Jinzhong Yang, A Kyle Jones, Chaan S Ng, Laurence Court
Consistent pixel sizes are of fundamental importance for assessing texture features that relate intensity and spatial information in radiomics studies. To correct for the effects of variable pixel sizes, we combined image resampling with Butterworth filtering in the frequency domain and tested the correction on computed tomography (CT) scans of lung cancer patients reconstructed 5 times with pixel sizes varying from 0.59 to 0.98 mm. One hundred fifty radiomics features were calculated for each preprocessing and field-of-view combination...
2017: PloS One
https://www.readbyqxmd.com/read/28934175/the-role-of-body-adiposity-index-in-determining-body-fat-percentage-in-colombian-adults-with-overweight-or-obesity
#4
Robinson Ramírez-Vélez, Jorge Enrique Correa-Bautista, Katherine González-Ruíz, Alejandra Tordecilla-Sanders, Antonio García-Hermoso, Jacqueline Schmidt-RioValle, Emilio González-Jiménez
The aim of this study is to investigate the accuracy of body adiposity index (BAI) as a convenient tool for assessing body fat percentage (BF%) in a sample of adults with overweight/obesity using bioelectrical impedance analysis (BIA). The study population was composed of 96 volunteers (60% female, mean age 40.6 ± 7.5 years old). Anthropometric characteristics (body mass index, height, waist-to-height ratio, hip and waist circumference), socioeconomic status, and diet were assessed, and BF% was measured by BIA-BF% and by BAI-BF%...
September 21, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28930698/2d-and-3d-ct-radiomics-features-prognostic-performance-comparison-in-non-small-cell-lung-cancer
#5
Chen Shen, Zhenyu Liu, Min Guan, Jiangdian Song, Yucheng Lian, Shuo Wang, Zhenchao Tang, Di Dong, Lingfei Kong, Meiyun Wang, Dapeng Shi, Jie Tian
OBJECTIVE: To compare 2D and 3D radiomics features prognostic performance differences in CT images of non-small cell lung cancer (NSCLC). METHOD: We enrolled 588 NSCLC patients from three independent cohorts. Two sets of 463 patients from two different institutes were used as the training cohort. The remaining cohort with 125 patients was set as the validation cohort. A total of 1014 radiomics features (507 2D features and 507 3D features correspondingly) were assessed...
September 17, 2017: Translational Oncology
https://www.readbyqxmd.com/read/28929449/concordance-analysis-of-paired-cancer-antigen-ca-15-3-and-27-29-testing
#6
David C Lin, Jonathan R Genzen
PURPOSE: Cancer antigens (CA) 15-3 and 27.29 are used in the clinical management of many breast cancer patients. Given that immunoassays for CA 15-3 and CA 27.29 target epitopes on the same glycoprotein-Mucin 1 (MUC1)-the present analysis was conducted to evaluate the potential concordance of tumor marker results when both tests were ordered by providers on the same specimens. METHODS: A retrospective limited dataset of paired CA 15-3 (Roche Diagnostics) and CA 27...
September 19, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28929390/does-repeated-testing-impact-concordance-between-genital-and-self-reported-sexual-arousal-in-women
#7
Julia Velten, Meredith L Chivers, Lori A Brotto
Women show a substantial variability in their genital and subjective responses to sexual stimuli. The level of agreement between these two aspects of response is termed sexual concordance and has been increasingly investigated because of its implications for understanding models of sexual response and as a potential endpoint in clinical trials of treatments to improve women's sexual dysfunction. However, interpreting changes in sexual concordance may be problematic because, to date, it still is unclear how repeated testing itself influences sexual concordance in women...
September 19, 2017: Archives of Sexual Behavior
https://www.readbyqxmd.com/read/28929333/late-iodine-enhancement-computed-tomography-with-image-subtraction-for-assessment-of-myocardial-infarction
#8
Yuki Tanabe, Teruhito Kido, Akira Kurata, Takanori Kouchi, Naoki Fukuyama, Takahiro Yokoi, Teruyoshi Uetani, Natsumi Yamashita, Masao Miyagawa, Teruhito Mochizuki
OBJECTIVE: To evaluate the feasibility of image subtraction in late iodine enhancement CT (LIE-CT) for assessment of myocardial infarction (MI). METHODS: A comprehensive cardiac CT protocol and late gadolinium enhancement MRI (LGE-MRI) was used to assess coronary artery disease in 27 patients. LIE-CT was performed after stress CT perfusion (CTP) and CT angiography. Subtraction LIE-CT was created by subtracting the mask volume of the left ventricle (LV) cavity from the original LIE-CT using CTP dataset...
September 19, 2017: European Radiology
https://www.readbyqxmd.com/read/28929264/a-novel-and-cheap-method-to-correlate-subjective-and-objective-visual-acuity-by-using-the-optokinetic-response
#9
Carlo Aleci, Martina Scaparrotti, Sabrina Fulgori, Lorenzo Canavese
PURPOSE: To describe a novel optokinetic visual acuity estimator (Oktotype) and to report the preliminary results obtained in poorly and non-collaborative subjects. METHODS: Eleven series of symbols arranged horizontally and moving from left to right at a constant rate were displayed. In each sequence, the size of the stimuli was reduced logarithmically. By using this paradigm, the objective visual acuity was computed in 26 normal subjects as the minimum size of the symbols able to evoke the optokinetic response...
September 19, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28927397/detection-of-bacterial-pathogens-from-clinical-specimens-using-conventional-microbial-culture-and-16s-metagenomics-a-comparative-study
#10
Lalanika M Abayasekara, Jennifer Perera, Vishvanath Chandrasekharan, Vaz S Gnanam, Nisala A Udunuwara, Dileepa S Liyanage, Nuwani E Bulathsinhala, Subhashanie Adikary, Janith V S Aluthmuhandiram, Chrishanthi S Thanaseelan, D Portia Tharmakulasingam, Tharaga Karunakaran, Janahan Ilango
BACKGROUND: Infectious disease is the leading cause of death worldwide, and diagnosis of polymicrobial and fungal infections is increasingly challenging in the clinical setting. Conventionally, molecular detection is still the best method of species identification in clinical samples. However, the limitations of Sanger sequencing make diagnosis of polymicrobial infections one of the biggest hurdles in treatment. The development of massively parallel sequencing or next generation sequencing (NGS) has revolutionized the field of metagenomics, with wide application of the technology in identification of microbial communities in environmental sources, human gut and others...
September 19, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28927248/comparison-of-two-methods-for-the-in-vivo-diagnosis-of-helicobacter-pylori-infection-using-a-tablet-of-13c-urea
#11
Daniela Gilardi, Gionata Fiorino, Federica Furfaro, Marina F Alfieri, Ilaria Orlandi, Mariangela Allocca, Silvio Danese
BACKGROUND: The urea Breath-test is a widely-used method to detect the presence of Helicobacter pylori (HP) infection. Recently, new technologies were introduced, to obtain an immediate test result by continuous breath samples analysis after labeled urea intake. The total test duration is shorter than 20 minutes. METHODS: The study compared two diagnostic methods requiring the administration of EXPIROBACTER® (Sofar SpA, Trezzano Rosa, Milan, Italy) 100 mg as a source of labeled urea...
December 2017: Minerva Gastroenterologica e Dietologica
https://www.readbyqxmd.com/read/28926156/the-roles-of-plasticity-and-evolutionary-change-in-shaping-gene-expression-variation-in-natural-populations-of-extremophile-fish
#12
Courtney N Passow, Chathurika Henpita, Jennifer H Shaw, Corey R Quackenbush, Wesley C Warren, Manfred Schartl, Lenin Arias-Rodriguez, Joanna L Kelley, Michael Tobler
The notorious plasticity of gene expression responses and the complexity of environmental gradients complicate the identification of adaptive differences in gene regulation among populations. We combined transcriptome analyses in nature with common garden and exposure experiments to establish cause and effect relationships between the presence of a physiochemical stressor and expression differences, as well as to test how evolutionary change and plasticity interact to shape gene expression variation in natural systems...
September 19, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28926139/the-synonymous-nucleotide-substitution-rhd-1056c-g-alters-mrna-splicing-associated-with-serologically-weak-d-phenotype
#13
Sejong Chun, Jae Won Yun, Geon Park, Duck Cho
BACKGROUND: D antigen is one of the most clinically significant blood group antigens. Variation of the RHD gene can cause weak D or partial D phenotypes. While most variations are missense substitutions with amino acid changes, those without are called "silent" or "synonymous" substitutions. Synonymous substitutions often have little effect on the protein, not altering the phenotype. However, effect on splicing can affect end-product protein. We report a new synonymous variation, RHD 1056C>G, that resulted in weak D phenotype, and predicted its effect with various in silico methods...
September 19, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28925817/using-multiple-classifiers-for-predicting-the-risk-of-endovascular-aortic-aneurysm-repair-re-intervention-through-hybrid-feature-selection
#14
Omneya Attallah, Alan Karthikesalingam, Peter Je Holt, Matthew M Thompson, Rob Sayers, Matthew J Bown, Eddie C Choke, Xianghong Ma
Feature selection is essential in medical area; however, its process becomes complicated with the presence of censoring which is the unique character of survival analysis. Most survival feature selection methods are based on Cox's proportional hazard model, though machine learning classifiers are preferred. They are less employed in survival analysis due to censoring which prevents them from directly being used to survival data. Among the few work that employed machine learning classifiers, partial logistic artificial neural network with auto-relevance determination is a well-known method that deals with censoring and perform feature selection for survival data...
September 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28924815/automatic-determination-of-the-need-for-intravenous-contrast-in-musculoskeletal-mri-examinations-using-ibm-watson-s-natural-language-processing-algorithm
#15
Hari Trivedi, Joseph Mesterhazy, Benjamin Laguna, Thienkhai Vu, Jae Ho Sohn
Magnetic resonance imaging (MRI) protocoling can be time- and resource-intensive, and protocols can often be suboptimal dependent upon the expertise or preferences of the protocoling radiologist. Providing a best-practice recommendation for an MRI protocol has the potential to improve efficiency and decrease the likelihood of a suboptimal or erroneous study. The goal of this study was to develop and validate a machine learning-based natural language classifier that can automatically assign the use of intravenous contrast for musculoskeletal MRI protocols based upon the free-text clinical indication of the study, thereby improving efficiency of the protocoling radiologist and potentially decreasing errors...
September 18, 2017: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/28922270/decision-making-in-pediatric-transport-team-dispatch-using-script-concordance-testing
#16
Prakadeshwari Rajapreyar, Karen Marcdante, Liyun Zhang, Pippa Simpson, Michael T Meyer
OBJECTIVES: Our objective was to compare decision-making in dispatching pediatric transport teams by Medical Directors of pediatric transport teams (serving as experts) to that of Pediatric Intensivists and Critical Care fellows who often serve as Medical Control physicians. Understanding decision-making around team composition and dispatch could impact clinical management, cost effectiveness, and educational needs. DESIGN: Survey was developed using Script Concordance Testing guidelines...
September 15, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28922264/validation-of-a-portable-coagulometer-for-routine-in-hospital-use-for-newborns
#17
Antonio E Jerez Calero, Dolores Fernández Jiménez, Manuel Molina Oya, Eduardo Narbona López, José Uberos Fernández
OBJECTIVES: To verify the reliability and clinical benefits of the coagulation tests made by a point of care device in newborn admitted to a neonatal unit. DESIGN: We made a statistical comparison between results obtained by the point of care device versus conventional laboratory analysis. SETTING: Level 3 neonatal unit. PATIENTS: Thirty-one infants admitted to the neonatal unit at the San Cecilio University Hospital (Granada, Spain) were recruited to this study...
September 15, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28922088/semifluorinated-alkane-eye-drops-for-treatment-of-dry-eye-disease-due-to-meibomian-gland-disease
#18
Philipp Steven, Albert J Augustin, Gerd Geerling, Thomas Kaercher, Florian Kretz, Kathleen Kunert, Johannes Menzel-Severing, Norbert Schrage, Wolfgang Schrems, Sonja Krösser, Michael Beckert, Elisabeth M Messmer
PURPOSE: Meibomian gland disease is generally accepted as the leading cause for evaporative dry eye disease (DED). In a previous study, perfluorohexyloctane, a semifluorinated alkane, has been demonstrated to significantly increase tear film breakup time and to reduce corneal fluorescein staining in patients with evaporative DED, thereby vastly reducing dry eye-related symptoms. This study was set up to evaluate perfluorohexyloctane in a larger population of patients with Meibomian gland dysfunction...
September 18, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28918967/accuracy-of-bedside-point-of-care-testing-in-critical-emergency-department-patients
#19
Braden W McIntosh, Jerina Vasek, Maria Taylor, Deborah Le Blanc, Henry C Thode, Adam J Singer
BACKGROUND: Point-of-care (POC) testing reduces laboratory turn-around having the potential to improve timely diagnosis and management. We compared the accuracy of nurse performed POC and core laboratory testing and determined whether deviations between the two were clinically meaningful. METHODS: We performed a prospective, observational study on a convenience sample of 50 critical care ED patients in whom a POC chemistry and hematocrit was ordered. Blood samples were divided into 2 aliquots; one sample was tested by the treating nurse using a handheld POC device and the other sample was tested in the core laboratory...
September 14, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28915871/virtual-patients-in-the-acquisition-of-clinical-reasoning-skills-does-presentation-mode-matter-a-quasi-randomized-controlled-trial
#20
Fabian Schubach, Matthias Goos, Götz Fabry, Werner Vach, Martin Boeker
BACKGROUND: The objective of this study is to compare two different instructional methods in the curricular use of computerized virtual patients in undergraduate medical education. We aim to investigate whether using many short and focused cases - the key feature principle - is more effective for the learning of clinical reasoning skills than using few long and systematic cases. METHODS: We conducted a quasi-randomized, non-blinded, controlled parallel-group intervention trial in a large medical school in Southwestern Germany...
September 15, 2017: BMC Medical Education
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