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https://www.readbyqxmd.com/read/29031123/electric-field-standing-wave-effects-in-internal-reflection-and-atr-spectroscopy
#1
Thomas G Mayerhöfer, Jürgen Popp
We investigate electric field standing wave effects in the system semiinfinite incidence medium with high index of refraction/layer/vacuum, the latter being the semiinfinite exit medium. If the layer has a lower index of refraction than the incidence medium, then very strong resonances occur between the two critical angles of the system defined by the systems incidence medium/layer and incidence medium/vacuum, as the layer is then a cavity. In particular close to the lower critical angles, the evanescent fields extend strongly into the exit medium...
October 4, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29031080/endovascular-therapy-for-vasospasm-secondary-to-subarachnoid-hemorrhage-a-meta-analysis-and-systematic-review
#2
REVIEW
Zhong Yao, Xin Hu, Chao You
Endovascular therapy has been used as an alternative treatment for vasospasm following subarachnoid hemorrhage. The effectiveness and safety of endovascular therapy are still controversial. We performed a systematic review and meta-analysis to identify any advantage of endovascular therapy over traditional medical treatment. We systematically reviewed related English publications by searching PubMed, Ovid, Cochrane library, and Web of Science up to May 2017.The risk ratios (RR) and 95% confidence intervals (CI) were synthesized with fixed effect model...
October 9, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29029151/combined-toxicity-of-three-essential-oils-against-aedes-aegypti-diptera-culicidae-larvae
#3
Ephantus J Muturi, Jose L Ramirez, Kenneth M Doll, Michael J Bowman
Essential oils are potential alternatives to synthetic insecticides because they have low mammalian toxicity, degrade rapidly in the environment, and possess complex mixtures of bioactive constituents with multi-modal activity against the target insect populations. Twenty-one essential oils were initially screened for their toxicity against Aedes aegypti (L.) larvae and three out of the seven most toxic essential oils (Manuka, oregano, and clove bud essential oils) were examined for their chemical composition and combined toxicity against Ae...
October 4, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29029109/early-diagnosis-of-acute-coronary-syndrome
#4
Hugo Katus, André Ziegler, Okan Ekinci, Evangelos Giannitsis, Wendy Gattis Stough, Stephan Achenbach, Stefan Blankenberg, Martina Brueckmann, Paul Collinson, Dorin Comaniciu, Filippo Crea, Wilfried Dinh, Grégory Ducrocq, Frank A Flachskampf, Keith A A Fox, Matthias G Friedrich, Kathy A Hebert, Anders Himmelmann, Mark Hlatky, Dominik Lautsch, Bertil Lindahl, Daniel Lindholm, Nicholas L Mills, Giorgio Minotti, Martin Möckel, Torbjørn Omland, Véronique Semjonow
The diagnostic evaluation of acute chest pain has been augmented in recent years by advances in the sensitivity and precision of cardiac troponin assays, new biomarkers, improvements in imaging modalities, and release of new clinical decision algorithms. This progress has enabled physicians to diagnose or rule-out acute myocardial infarction earlier after the initial patient presentation, usually in emergency department settings, which may facilitate prompt initiation of evidence-based treatments, investigation of alternative diagnoses for chest pain, or discharge, and permit better utilization of healthcare resources...
October 3, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29029074/multimodality-imaging-evaluation-of-chagas-disease-an-expert-consensus-of-brazilian-cardiovascular-imaging-department-dic-and-the-european-association-of-cardiovascular-imaging-eacvi
#5
Maria Carmo P Nunes, Luigi Paolo Badano, J Antonio Marin-Neto, Thor Edvardsen, Covadonga Fernández-Golfín, Chiara Bucciarelli-Ducci, Bogdan A Popescu, Richard Underwood, Gilbert Habib, Jose Luis Zamorano, Roberto Magalhães Saraiva, Ester Cerdeira Sabino, Fernando A Botoni, Márcia Melo Barbosa, Marcio Vinicius L Barros, Eduardo Falqueto, Marcus Vinicius Simões, André Schmidt, Carlos Eduardo Rochitte, Manoel Otávio Costa Rocha, Antonio Luiz Pinho Ribeiro, Patrizio Lancellotti
Aims: To develop a document by Brazilian Cardiovascular Imaging Department (DIC) and the European Association of Cardiovascular Imaging (EACVI) to review and summarize the most recent evidences about the non-invasive assessment of patients with Chagas disease, with the intent to set up a framework for standardized cardiovascular imaging to assess cardiovascular morphologic and functional disturbances, as well as to guide the subsequent process of clinical decision-making. Methods and results: Chagas disease remains one of the most prevalent infectious diseases in Latin America, and has become a health problem in non-endemic countries...
September 25, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29029029/a-manifesto-for-cardiovascular-imaging-addressing-the-human-factor
#6
Alan G Fraser
Our use of modern cardiovascular imaging tools has not kept pace with their technological development. Diagnostic errors are common but seldom investigated systematically. Rather than more impressive pictures, our main goal should be more precise tests of function which we select because their appropriate use has therapeutic implications which in turn have a beneficial impact on morbidity or mortality. We should practise analytical thinking, use checklists to avoid diagnostic pitfalls, and apply strategies that will reduce biases and avoid overdiagnosis...
September 28, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29028929/peripheral-i-v-analysis-piva-of-venous-waveforms-for-volume-assessment-in-patients-undergoing-haemodialysis
#7
K M Hocking, B D Alvis, F Baudenbacher, R Boyer, C M Brophy, I Beer, S Eagle
Background: The assessment of intravascular volume status remains a challenge for clinicians. Peripheral i.v. analysis (PIVA) is a method for analysing the peripheral venous waveform that has been used to monitor volume status. We present a proof-of-concept study for evaluating the efficacy of PIVA in detecting changes in fluid volume. Methods: We enrolled 37 hospitalized patients undergoing haemodialysis (HD) as a controlled model for intravascular volume loss...
September 27, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29028905/quality-of-biological-images-reconstructed-using-localization-microscopy-data
#8
Blazej Ruszczycki, Tytus Bernas
Motivation: Fluorescence localization microscopy is extensively used to study the details of spatial architecture of subcellular compartments. This modality relies on determination of spatial positions of fluorophores, labeling an extended biological structure, with precision exceeding the diffraction limit. Several established models describe influence of pixel size, signal-to-noise ratio and optical resolution on the localization precision. The labeling density has been also recognized as important factor affecting reconstruction fidelity of the imaged biological structure...
September 25, 2017: Bioinformatics
https://www.readbyqxmd.com/read/29028904/considerations-for-clinical-neuropsychological-evaluation-in-amyotrophic-lateral-sclerosis
#9
Susan C Woolley, Beth K Rush
The clinical neuropsychologist has the opportunity to be uniquely involved in the evaluation and treatment of individuals with amyotrophic lateral sclerosis (ALS). We review the current literature that defines cognitive and behavioral symptoms in ALS, including current knowledge of the neuropathological and genetic underpinning for these symptoms. There are unique considerations for clinical neuropsychological evaluation and clinical research in ALS and we highlight these in this review. Specifically, we shed light on special factors that contribute to our understanding of cognitive and behavioral impairment in ALS, including co-morbid symptoms, differential diagnosis, and considerations for longitudinal tracking of phenotypes...
September 28, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/29028857/treating-the-young-aesthetic-patient-evidence-based-recommendations
#10
Lauren Meshkov Bonati, Sabrina Guillen Fabi
<p>BACKGROUND: There is growing demand for cosmetic treatments in the younger population, yet counseling and treating this age group can be difficult to justify.</p> <p>OBJECTIVE: Chronologic changes that cause noticeable signs of aging are discussed within each age group. Age-appropriate cosmetic preventions and interventions are therefore recommended.</p> <p>METHODS: A PubMed search was performed for high quality trials and evidence based reviews on the basic science of aging, as well as on cosmetic modalities and their histological, biochemical, and clinical effects...
June 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29028777/taboo-in-the-workplace-a-qualitative-study-of-taiwanese-nurses-not-eating-pineapple-in-clinical-practice
#11
Shu-Ling Tsai, Chang-Hsiung Tsai, Yu-Chien Hsu, Mei-Hui Hsieh, Hsia-Tzu Kao, Min-Tao Hsu
There has been an increased emphasis on nurses' mental health and well-being in the workplace. Psychologists have established a correlative link between individual's beliefs on luck and mental health. The pineapple taboo has been observed among Taiwanese hospital nurses as a prevalent superstitious belief for bringing luck or warding off increased clinical workloads, but how and why the ritual persists in the hospital workplace remains unknown. This article aims to explore the latent meaning of observance of the taboo and how it is related to nurses' clinical practice and possibly affects their mental health at work...
November 2017: Holistic Nursing Practice
https://www.readbyqxmd.com/read/29028758/mr-neurography-of-lumbosacral-plexus-in-failed-back-surgery-syndrome
#12
Riham Dessouky, Mohammed Khaleel, Dalia N Khalifa, Hazim I Tantawy, Avneesh Chhabra
STUDY DESIGN: Retrospective clinical case series. OBJECTIVE: To study the role of MRN of lumbosacral plexus in management of patients with FBSS. SUMMARY OF BACKGROUND DATA: Failed back surgery syndrome (FBSS) is one of the major problems in health care, affecting up to 40% of patients following spine surgery. To date, no imaging modality has been used to effectively classify nerve compression, since nerve injuries are challenging to detect on conventional lumbar spine MRI...
October 12, 2017: Spine
https://www.readbyqxmd.com/read/29028687/hyperreflective-deposition-in-the-background-of-advanced-stargardt-disease
#13
Lyam Ciccone, Winston Lee, Jana Zernant, Koji Tanaka, Kaspar Schuerch, Stephen H Tsang, Rando Allikmets
PURPOSE: To describe an unusual manifestation of hyperreflective deposits in the subretinal space in a group of patients with clinically and genetically confirmed Stargardt disease. METHODS: Retrospective review of color fundus, autofluorescence, infrared reflectance, red-free images, and spectral domain optical coherence tomography in 296 clinically diagnosed and genetically confirmed (2 expected disease-causing mutations in ABCA4) patients with Stargardt disease...
October 12, 2017: Retina
https://www.readbyqxmd.com/read/29028645/an-update-on-the-status-of-molecular-testing-for-the-indeterminate-thyroid-nodule-and-risk-stratification-of-differentiated-thyroid-cancer
#14
Kristina J Nicholson, Linwah Yip
PURPOSE OF REVIEW: Correct identification of malignancy in cytologically indeterminate thyroid nodules is a diagnostic challenge, leading to potentially unnecessary surgery in patients for whom final histology is benign. Similarly, many patients with differentiated thyroid cancer (DTC) undergo aggressive surgical management of tumors, which may ultimately have low-risk histologic features. Use of molecular testing strategies can aid in both the diagnosis of indeterminate thyroid nodules and preoperative risk stratification of DTC...
October 11, 2017: Current Opinion in Oncology
https://www.readbyqxmd.com/read/29028585/seeing-odors-in-color-cross-modal-associations-in-children-and-adults-from-two-cultural-environments
#15
Nathalie Goubet, Karine Durand, Benoist Schaal, Daniel D McCall
We investigated the occurrence and underlying processes of odor-color associations in French and American 6- to 10-year-old children (n = 386) and adults (n = 137). Nine odorants were chosen according to their familiarity to either cultural group. Participants matched each odor with a color, gave hedonic and familiarity judgments, and identified each odor. By 6 years of age, children displayed culture-specific odor-color associations, but age differences were noted in the type of associations. Children and adults in both cultural groups shared common associations and formed associations that were unique to their environment, underscoring the importance of exposure learning in odor-color associations...
October 10, 2017: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/29028584/diagnosis-and-treatment-options-for-sequelae-following-radiation-treatment-of-brain-tumors
#16
REVIEW
Swapnil Mehta, Aatman Shah, Henry Jung
Radiation serves an important role in the treatment of metastatic and primary brain tumors. Radiation carries a risk of post radiation treatment effects, such as pseudoprogression and radiation necrosis. The ability to differentiate between radiation necrosis, pseudoprogression, and tumor recurrence remains a diagnostic conundrum with varying treatment options. In this review, we will discuss the pathophysiology, diagnostic imaging modalities, and treatments of these post-radiation treatment effects. We focus on the latest developments in magnetic resonance imaging (MRI) modalities including imaging biomarkers and the newest therapeutics such as VEGF inhibitors, Hyperbaric Oxygen Therapy, sensitized cytotoxic T cells, and Laser Interstitial Thermal Therapy (LITT)...
October 7, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29028522/an-examination-of-sex-differences-in-neurocognition-and-social-cognition-in-first-episode-psychosis
#17
Haylee Danaher, Kelly Allott, Eóin Killackey, Robert Hester, Sue Cotton
Due to the dearth and conflicting findings of previous research, it is unclear whether males and females with first-episode psychosis (FEP) differ in their neurocognitive and social cognitive abilities. The aims of the current study were to investigate whether: (i) there are sex differences in neurocognition and social cognition among young people with FEP; and (ii) they resemble those observed in age-matched healthy controls. The current study involved secondary analysis of data from a previous study in which a large neurocognitive and social cognitive battery was administered to 146 individuals with FEP and 46 healthy controls aged 15-25 years...
September 30, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29028511/a-pictorial-review-of-diagnostic-pitfalls-of-developmental-anomalies-and-variants-in-pancreatic-imaging
#18
REVIEW
Jong Eun Lee, Sang Soo Shin, Shin Jung Kim, Suk Hee Heo, Hyo Soon Lim, Jin Woong Kim, Yong Yeon Jeong
Developmental anomalies and anatomic variants of the pancreas vary widely, and most of them are encountered incidentally during radiologic evaluation. However, some of these anomalies and variants are potentially pathologic and may cause various clinical presentations in childhood or adulthood. The early identification of these entities in various imaging modalities including ultrasound, computed tomography (CT), and magnetic resonance (MR) imaging would be valuable in making correct diagnoses and, in turn, preventing unnecessary additional procedures...
September 19, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29028436/pain-management-after-hip-arthroscopy-systematic-review-of-randomized-controlled-trials-and-cohort-studies
#19
Jason J Shin, Chris L McCrum, Craig S Mauro, Dharmesh Vyas
BACKGROUND: Hip arthroscopy is often associated with significant postoperative pain and opioid-associated side effects. Effective pain management after hip arthroscopy improves patient recovery and satisfaction and decreases opioid-related complications. PURPOSE: To collect, examine, and provide a comprehensive review of the available evidence from randomized controlled trials and comparative studies on pain control after hip arthroscopy. STUDY DESIGN: Systematic review...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29028279/liver-elastography-malignancy-prediction-lemp-score-for-noninvasive-characterization-of-focal-liver-lesions
#20
Ivica Grgurevic, Tomislav Bokun, Nermin N Salkic, Boris Brkljacic, Mirjana Vukelić-Markovic, Tajana Stoos-Veic, Gorana Aralica, Mislav Rakic, Tajana Filipec-Kanizaj, Annalisa Berzigotti
BACKGROUND & AIMS: To analyse elastographic characteristics of focal liver lesions (FLL)s and diagnostic performance of real-time two-dimensional shear-wave elastography (RT-2D-SWE) in order to differentiate benign and malignant FLLs. PATIENTS AND METHODS: Consecutive patients diagnosed with FLL by abdominal ultrasound (US) underwent RT-2D-SWE of FLL and non-infiltrated liver by intercostal approach over the right liver lobe. The nature of FLL was determined by diagnostic work-up, including at least one contrast-enhanced imaging modality (MDCT/MRI), check-up of target organs when metastatic disease was suspected and FLL biopsy in inconclusive cases...
October 13, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
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