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https://www.readbyqxmd.com/read/28549355/predictors-of-language-gains-among-school-age-children-with-language-impairment-in-the-public-schools
#1
Laura M Justice, Hui Jiang, Jessica A Logan, Mary Beth Schmitt
Purpose: This study aimed to identify child-level characteristics that predict gains in language skills for children with language impairment who were receiving therapy within the public schools. The therapy provided represented business-as-usual speech/language treatment provided by speech-language pathologists in the public schools. Method: The sample included 272 kindergartners and first-graders with language impairment who participated in a larger study titled "Speech-Therapy Experiences in the Public Schools...
May 26, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28549293/automated-recognition-of-the-pericardium-contour-on-processed-ct-images-using-genetic-algorithms
#2
É O Rodrigues, L O Rodrigues, L S N Oliveira, A Conci, P Liatsis
This work proposes the use of Genetic Algorithms (GA) in tracing and recognizing the pericardium contour of the human heart using Computed Tomography (CT) images. We assume that each slice of the pericardium can be modelled by an ellipse, the parameters of which need to be optimally determined. An optimal ellipse would be one that closely follows the pericardium contour and, consequently, separates appropriately the epicardial and mediastinal fats of the human heart. Tracing and automatically identifying the pericardium contour aids in medical diagnosis...
May 17, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28549292/globally-supported-radial-basis-function-based-collocation-method-for-evolution-of-level-set-in-mass-segmentation-using-mammograms
#3
Kanchan Lata Kashyap, Manish Kumar Bajpai, Pritee Khanna
Computer-aided detection systems play an important role for the detection of breast abnormalities using mammograms. Global segmentation of mass in mammograms is a complex process due to low contrast mammogram images, irregular shape of mass, speculated margins, and the presence of intensity variations of pixels. This work presents a new approach for mass detection in mammograms, which is based on the variational level set function. Mesh-free based radial basis function (RBF) collocation approach is employed for the evolution of level set function for segmentation of breast as well as suspicious mass region...
May 15, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28549261/small-spontaneously-ruptured-gastrointestinal-stromal-tumor-in-the-small-intestine-causing-hemoperitoneum-a-case-report
#4
Shuichi Fukuda, Yoshinori Fujiwara, Tomoko Wakasa, Keisuke Inoue, Kotaro Kitani, Hajime Ishikawa, Masanori Tsujie, Masao Yukawa, Yoshio Ohta, Masatoshi Inoue
INTRODUCTION: Gastrointestinal stromal tumors (GISTs) are clinically asymptomatic until they reach a significant size; therefore, GISTs that are 2cm or less are typically asymptomatic. Patients with symptomatic GISTs typically present with abdominal pain, gastrointestinal bleeding, or a palpable mass but rarely present with hemoperitoneum. PRESENTATION OF CASE: A 72-year-old Japanese man presented to us with acute onset abdominal pain. Physical examination showed peritoneal irritation in the lower abdomen...
May 17, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28549246/the-usage-of-data-compression-for-the-background-estimation-of-electron-energy-loss-spectra
#5
Jakob Spiegelberg, Ján Rusz, Klaus Leifer, Thomas Thersleff
Quantitative analysis of noisy electron spectrum images requires a robust estimation of the underlying background signal. We demonstrate how modern data compression methods can be used as a tool for achieving an analysis result less affected by statistical errors or to speed up the background estimation. In particular, we demonstrate how a multilinear singular value decomposition (MLSVD) can be used to enhance elemental maps obtained from a complex sample measured with energy electron loss spectroscopy. Furthermore, the usage of vertex component analysis (VCA) for a basis vector centered estimation of the background is demonstrated...
May 20, 2017: Ultramicroscopy
https://www.readbyqxmd.com/read/28549119/systematic-review-of-cost-effectiveness-of-myocardial-perfusion-scintigraphy-in-patients-with-ischaemic-heart-disease-a-report-from-the-cardiovascular-committee-of-the-european-association-of-nuclear-medicine-endorsed-by-the-european-association-of-cardiovascular
#6
Elin Trägårdh, Siok Swan Tan, Jan Bucerius, Alessia Gimelli, Oliver Gaemperli, Oliver Lindner, Denis Agostini, Christopher Übleis, Roberto Sciagrà, Riemer H Slart, S Richard Underwood, Fabien Hyafil, Marcus Hacker, Hein J Verberne
Coronary artery disease (CAD) is a major cause of death and disability. Several diagnostic tests, such as myocardial perfusion scintigraphy (MPS), are accurate for the detection of CAD, as well as having prognostic value for the prediction of cardiovascular events. Nevertheless, the diagnostic and prognostic value of these tests should be cost-effective and should lead to improved clinical outcome. We have reviewed the literature on the cost-effectiveness of MPS in different circumstances: (i) the diagnosis and management of CAD; (ii) comparison with exercise electrocardiography (ECG) and other imaging tests; (iii) as gatekeeper to invasive coronary angiography (ICA), (iv) the impact of appropriate use criteria; (v) acute chest pain, and (vi) screening of asymptomatic patients with type-2 diabetes...
May 26, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28549110/thoracic-aortitis-and-aortic-dissection-following-pegfilgrastim-administration
#7
Yuki Sato, Shuichiro Kaji, Hiroyuki Ueda, Keisuke Tomii
The patient was a 67-year-old woman with a history of advanced lung adenocarcinoma. Eight days after pegfilgrastim administration, her computed tomography scan revealed thickened bilateral common carotid arteries and thoracic aorta, which led to the diagnosis of pegfilgrastim-associated aortitis. Thirty-six days after pegfilgrastim administration, asymptomatic Stanford type B aortic dissection was detected. Her serum biomarker analysis suggested that interleukin-6 might be involved in the pathogenesis. Physicians should be aware of these adverse effects of filgrastim...
May 26, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28549079/computational-modeling-of-immune-system-of-the-fish-for-a-more-effective-vaccination-in-aquaculture
#8
Alice Madonia, Cristiano Melchiorri, Simone Bonamano, Marco Marcelli, Chiara Bulfon, Filippo Castiglione, Marco Galeotti, Donatella Volpatti, Francesco Mosca, Pietro-Giorgio Tiscar, Nicla Romano
Motivation: A computational model equipped with the main immunological features of the sea bass ( Dicentrarchus labrax L. ) immune system was used to predict more effective vaccination in fish. The performance of the model was evaluated by using the results of two in vivo vaccinations trials against L. anguillarum and P. damselae . Tests were performed to select the appropriate doses of vaccine and infectious bacteria to set up the model. Simulation outputs were compared with the specific antibody production and the expression of BcR and TcR gene transcripts in spleen...
May 26, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28549069/correction-intrinsic-noise-profoundly-alters-the-dynamics-and-steady-state-of-morphogen-controlled-bistable-genetic-switches
#9
(no author information available yet)
[This corrects the article DOI: 10.1371/journal.pcbi.1005154.].
May 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28549023/technical-feasibility-of-a-combined-noncontrast-magnetic-resonance-protocol-for-preoperative-transcatheter-aortic-valve-replacement-evaluation
#10
Paola M Cannaò, Giuseppe Muscogiuri, U Joseph Schoepf, Carlo N De Cecco, Pal Suranyi, Virginia W Lesslie, Davide Piccini, Shivraman Giri, Akos Varga-Szemes
PURPOSE: The aim of this study was to prospectively evaluate the technical feasibility of a noncontrast magnetic resonance angiography (MRA) protocol using investigational prototype self-navigated 3D (SN3D) radial whole-heart and quiescent-interval single-shot (QISS) pulse sequences regarding their potential in planning transcatheter aortic valve replacement (TAVR). MATERIALS AND METHODS: Five patients (76±7 y) with severe aortic valve stenosis and prior computed tomographic angiography (CTA) for TAVR planning and 10 healthy volunteers (28±6 y) underwent noncontrast MRA on a 1...
May 25, 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28549022/pictorial-review-of-surgical-anatomy-in-adult-congenital-heart-disease
#11
Carlo N De Cecco, Giuseppe Muscogiuri, José M Madrid Pérez, Marwen Eid, Pal Suranyi, Virginia W Lesslie, Gorka Bastarrika
The survival rate of patients with congenital heart disease (CHD) has dramatically improved over the last 2 decades because of technological and surgical advances in diagnosis and treatment, respectively. The vast majority of CHD patients are, in fact, amenable to treatment by either device closure or surgery. Considering the wide spectrum of surgical procedures and complex native and derived anatomy, continuous and detailed follow-up is of paramount importance. Cardiac magnetic resonance and cardiac computed tomography angiography are the cornerstones of diagnosis and follow-up of CHD, allowing for comprehensive noninvasive assessment of the heart, coronary tree, and intrathoracic great vessels, along with both morphological and functional evaluation...
May 25, 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28549021/crus-atrophy-accuracy-of-computed-tomorgraphy-in-diagnosis-of-diaphragmatic-paralysis
#12
Warawut Sukkasem, Sherine G Moftah, Gregory Kicska, J David Godwin, Sudhakar Pipavath, Eric Stern
PURPOSE: The aim of this study was to measure the association between crus atrophy as depicted by computed tomography (CT) and fluoroscopic diagnosis of hemidiaphragmatic paralysis in patients with suspected diaphragmatic dysfunction. MATERIALS AND METHODS: A retrospective review of patient data was approved by our institutional review board and was HIPPA-compliant. We reviewed 90 patients who had undergone diaphragmatic fluoroscopy; 72 had CT scans available for measurement of crus thickness at the levels of the celiac and superior mesenteric arteries and the L1 vertebral body...
May 25, 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28549020/lung-density-and-pulmonary-artery-diameter-are-predictors-of-pulmonary-hypertension-in-systemic-sclerosis
#13
Margreet E Bakker, Maarten K Ninaber, Jan Stolk, Lucia J M Kroft, Anne A Schouffoer, Jeska K de Vries Bouwstra, Suzanne E van Wijngaarden, Berend C Stoel
PURPOSE: The aim was to evaluate computed tomography (CT)-measured pulmonary artery diameter (PAD) and lung density as predictors of pulmonary hypertension (PH) in subjects with systemic sclerosis (SSc). We compared these PAD values with normal values and between SSc subgroups with PH and/or interstitial lung disease (ILD). We investigated whether PAD predicts PH and whether lung densitometry, by using the 85th percentile density value (Perc85) as a measure for ILD, can predict PH. MATERIALS AND METHODS: PAD and Perc85 were measured in axial CT scans and compared between 54 SSc and 76 control subjects...
May 25, 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28548993/muscle-metabolism
#14
Nicolas Tardif, Jonathan Grip, Olav Rooyackers
PURPOSE OF REVIEW: To review the recent findings on metabolic derangements leading to loss of muscle mass and function. RECENT FINDINGS: Several recent studies investigated methods to assess muscle mass and function and its clinical relevance. These are also included. A few studies confirm that a low muscle mass is related to a worse outcome but also a compromised muscle function at discharge is related to long-term survival. A low quality of muscle assessed by the density of muscle from a computed tomography scan is related to mortality...
May 25, 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/28548989/imaging-adult-patients-with-fontan-circulation
#15
Salil Ginde, Benjamin H Goot, Peter C Frommelt
PURPOSE OF REVIEW: Survival after the Fontan procedure for palliation of single ventricle congenital heart disease has improved. However, adults with Fontan circulation are at risk for several complications including heart failure, thromboembolism, and protein-losing enteropathy. This review discusses the role of noninvasive imaging for surveillance and early detection of anatomic and functional abnormalities of the Fontan circulation that can impact the risk for Fontan failure over time...
May 25, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28548975/factor-vii-activating-protease-sex-related-association-with-coronary-artery-calcification
#16
Ramshanker Ramanathan, Jørgen B Gram, Niels Peter R Sand, Bjarne L Nørgaard, Axel C P Diederichsen, Frank Vitzthum, Herbert Schwarz, Johannes J Sidelmann
: Factor VII-activating protease (FSAP) may regulate development of cardiovascular disease (CVD). We evaluated sex differences in FSAP measures and examined the association between FSAP and coronary artery calcification (CAC) in a middle-aged population. Participants were randomly selected citizens aged 50 or 60 without CVD, diabetes mellitus, Marburg I polymorphism, or hormone replacement therapy (HRT). FSAP protein concentration (total FSAP), FSAP urokinase-activating capacity (FSAP GP), and FSAP GP/total FSAP (specific FSAP activity) were measured...
May 25, 2017: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/28548906/beyond-the-bowel-extraintestinal-manifestations-of-inflammatory-bowel-disease
#17
Jeffrey D Olpin, Brett P Sjoberg, Sarah E Stilwill, Leif E Jensen, Maryam Rezvani, Akram M Shaaban
Inflammatory bowel disease (IBD) is a chronic, relapsing immune-mediated inflammation of the gastrointestinal tract. IBD includes two major disease entities: Crohn disease and ulcerative colitis. Imaging plays an important role in the diagnosis and surveillance of these complex disorders. Computed tomographic and magnetic resonance enterographic techniques have been refined in recent years to provide a superb means of evaluating the gastrointestinal tract for suspected IBD. Although the intestinal imaging manifestations of IBD have been extensively discussed in the radiology literature, extraintestinal imaging manifestations of IBD have received less attention...
May 26, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28548897/evening-light-exposure-to-computer-screens-disrupts-human-sleep-biological-rhythms-and-attention-abilities
#18
A Green, M Cohen-Zion, A Haim, Y Dagan
The use of electronic devices with light-emitting screens has increased exponentially in the last decade. As a result, humans are almost continuously exposed to unintentional artificial light. We explored the independent and combined effects of two aspects of screen illumination, light wavelength, and intensity, on sleep, its biological regulation, and related functional outcomes. The 2 × 2 repeated-measure design included two independent variables: screen light intensity (low ([LI] versus high [HI]) and wavelength (short [SWL] versus long [LWL])...
May 26, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28548893/dynamic-decision-making-learning-processes-and-new-research-directions
#19
Cleotilde Gonzalez, Pegah Fakhari, Jerome Busemeyer
OBJECTIVE: The aim of this manuscript is to provide a review of contemporary research and applications on dynamic decision making (DDM). BACKGROUND: Since early DDM studies, there has been little systematic progress in understanding decision making in complex, dynamic systems. Our review contributes to better understanding of decision making processes in dynamic tasks. METHOD: We discuss new research directions in DDM to highlight the value of simplification in the study of complex decision processes, divided into experimental and theoretical/computational approaches, and focus on problems involving control tasks and search-and-choice tasks...
May 1, 2017: Human Factors
https://www.readbyqxmd.com/read/28548887/effects-of-bone-morphogenetic-protein-2-on-vertical-bone-augmentation-in-a-canine-model
#20
Yung-Ting Hsu, Khalid Al-Hezaimi, Pablo Galindo-Moreno, Francisco O'Valle, Abdulaziz Al-Rasheed, Hom-Lay Wang
BACKGROUND: Vertical bone augmentation (VBA) remains unpredictable and challenging for most clinicians. This study was aimed to compare hard tissue outcomes of VBA, with and without rhBMP-2, under space-making titanium mesh in a canine model. METHODS: Eleven male beagle dogs were used in the study. Experimental ridge defects were created to form atrophic ridges. VBA was performed via guide bone regeneration (GBR) using titanium mesh and allografts. In experimental hemimandibles, rhBMP-2/ACS was well mixed with allografts prior to procedures, whereas a control buffer was applied within controls...
May 26, 2017: Journal of Periodontology
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