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https://www.readbyqxmd.com/read/29332249/correlation-of-flow-density-as-measured-using-optical-coherence-tomography-angiography-with-structural-and-functional-parameters-in-glaucoma-patients
#1
Maged Alnawaiseh, Larissa Lahme, Viktoria Müller, André Rosentreter, Nicole Eter
PURPOSE: To evaluate the correlation between flow density, as measured by optical coherence tomography angiography (OCTA), and structural and functional parameters in patients with open-angle glaucoma. METHODS: Thirty-four eyes of 34 patients with open-angle glaucoma and 35 eyes of 35 healthy subjects were prospectively included in this study. OCTA was performed using RTVue XR Avanti with AngioVue. The macula was imaged with a 3 × 3 mm scan and the optic nerve head (ONH) with a 4...
January 13, 2018: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29329141/precision-of-optic-nerve-head-and-retinal-nerve-fiber-layer-parameter-measurements-by-spectral-domain-optical-coherence-tomography
#2
Laura M Schrems-Hoesl, Wolfgang A Schrems, Robert Laemmer, Friedrich E Kruse, Christian Y Mardin
PURPOSE: The aim of this study was to assess the repeatability and reproducibility (R&R) of Bruch's Membrane Opening - based on Minimum Rim Width (BMO-MRW), Minimum Rim Area (BMO-MRA) and peripapillary retinal nerve fiber layer thickness (RNFLT) with the Spectralis OCT (Heidelberg Engineering) for normal and glaucoma subjects. Precise measurement of these parameters can support detection of structural glaucomatous damage and progression. METHODS: This cross-sectional study included 16 healthy controls and 16 patients with glaucoma...
January 11, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29311417/theoretical-and-experimental-comparison-of-proton-and-helium-beam-radiography-using-silicon-pixel-detectors
#3
Tim Gehrke, Carlo Amato, Simon Berke, Maria Martisikova
Ion-beam radiography (iRAD) could potentially improve the quality control of ion-beam therapy. The main advantage of iRAD is the possibility to directly measure the integrated stopping power. Until now there is no clinical implementation of iRAD. Topics of ongoing research include developing dedicated detection systems to achieve the desired spatial resolution (SR) and investigating different ion types as imaging radiation. This work focuses on the theoretical and experimental comparison of proton (pRAD) and helium-beam radiography (αRAD)...
January 9, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29304828/oncogene-addiction-and-radiation-oncology-effect-of-radiotherapy-with-photons-and-carbon-ions-in-alk-eml4-translocated-nsclc
#4
Ying Dai, Quanxiang Wei, Christian Schwager, Janina Hanne, Cheng Zhou, Klaus Herfarth, Stefan Rieken, Kenneth E Lipson, Jürgen Debus, Amir Abdollahi
BACKGROUND: Patients with Echinoderm microtubule-associated protein-like 4 (EML4)-anaplastic lymphoma kinase (ALK) positive lung cancer are sensitive to ALK-kinase inhibitors. TAE684 is a potent second generation ALK inhibitor that overcomes Crizotinib resistance. Radiotherapy is an integral therapeutic component of locally advanced lung cancer. Therefore, we sought to investigate the effects of combined radiotherapy and ALK-inhibition via TAE684 in ALK-positive vs. wild type lung cancer cells...
January 5, 2018: Radiation Oncology
https://www.readbyqxmd.com/read/29303889/factors-influencing-the-diagnostic-accuracy-of-laser-scanning-in-vivo-confocal-microscopy-for-acanthamoeba-keratitis
#5
Ahmad Kheirkhah, Vannarut Satitpitakul, Zeba A Syed, Rodrigo Müller, Sunali Goyal, Elmer Y Tu, Reza Dana
PURPOSE: To determine the factors that influence the sensitivity and specificity of laser-scanning in vivo confocal microscopy (IVCM) for diagnosing Acanthamoeba keratitis (AK). METHODS: This retrospective, controlled study included 28 eyes of 27 patients with AK and 34 eyes of 34 patients with bacterial keratitis (as the control group). All patients had undergone corneal imaging with a laser-scanning IVCM (Heidelberg Retina Tomograph 3 with the Rostock Cornea Module)...
January 4, 2018: Cornea
https://www.readbyqxmd.com/read/29300765/optical-coherence-tomography-for-glaucoma-diagnosis-an-evidence-based-meta-analysis
#6
Vinay Kansal, James J Armstrong, Robert Pintwala, Cindy Hutnik
PURPOSE: Early detection, monitoring and understanding of changes in the retina are central to the diagnosis of glaucomatous optic neuropathy, and vital to reduce visual loss from this progressive condition. The main objective of this investigation was to compare glaucoma diagnostic accuracy of commercially available optical coherence tomography (OCT) devices (Zeiss Stratus, Zeiss Cirrus, Heidelberg Spectralis and Optovue RTVue, and Topcon 3D-OCT). PATIENTS: 16,104 glaucomatous and 11,543 normal eyes reported in 150 studies...
2018: PloS One
https://www.readbyqxmd.com/read/29299692/steeves-demazeux-and-patrick-singy-eds-the-dsm-5-in-perspective-philosophical-reflections-on-the-psychiatric-babel-dordrecht-heidelberg-new-york-london-springer-2015-series-history-philosophy-and-theory-of-the-life-sciences-vol-10-238%C3%A2-pp-%C3%A2-90
#7
https://www.readbyqxmd.com/read/29289956/outcomes-and-predictors-of-mortality-after-mitral-valve-surgery-in-high-risk-elderly-patients-the-heidelberg-experience
#8
Sabreen Mkalaluh, Marcin Szczechowicz, Bashar Dib, Gabor Szabo, Matthias Karck, Alexander Weymann
BACKGROUND Overall, life expectancy at the age of 80 has significantly increased in the industrialized world and the proportion of this age class undergoing cardiac surgery has also grown. In this context, we have analyzed a contemporary series of octogenarians undergoing mitral valve surgery at our institution. MATERIAL AND METHODS We performed a retrospective analysis of 138 consecutive octogenarians receiving mitral valve surgery between January 2006 and April 2017. Preoperative comorbidities, early mortality, postoperative clinical course, and predictors of mortality were examined...
December 31, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29288639/retinal-vascular-impairment-in-best-vitelliform-macular-dystrophy-assessed-by-means-of-optical-coherence-tomography-angiography
#9
Maurizio Battaglia Parodi, Francesco Romano, Maria Vittoria Cicinelli, Alessandro Rabiolo, Alessandro Arrigo, Luisa Pierro, Pierluigi Iacono, Francesco Bandello
PURPOSE: To evaluate vascular abnormalities at superficial (SCP), deep (DCP) capillary plexuses and choriocapillaris (CC) in patients with Best vitelliform macular dystrophy (BVMD) by means of optical coherence tomography angiography (OCT-A). DESIGN: Cross-sectional case series. METHODS: Sixty-six eyes of 33 patients with BVMD (sixteen males) and 33 controls were consecutively enrolled. Patients were subdivided in classic stages and underwent best-corrected visual acuity (BCVA), fundus autofluorescence and spectral domain-optical coherence tomography (Spectralis HRA+OCT; Heidelberg Engineering), and 4...
December 27, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29286742/distribution-of-off-diagonal-cross-sections-in-quantum-chaotic-scattering-exact-results-and-data-comparison
#10
Santosh Kumar, Barbara Dietz, Thomas Guhr, Achim Richter
The recently derived distributions for the scattering-matrix elements in quantum chaotic systems are not accessible in the majority of experiments, whereas the cross sections are. We analytically compute distributions for the off-diagonal cross sections in the Heidelberg approach, which is applicable to a wide range of quantum chaotic systems. Thus, eventually, we fully solve a problem that already arose more than half a century ago in compound-nucleus scattering. We compare our results with data from microwave and compound-nucleus experiments, particularly addressing the transition from isolated resonances towards the Ericson regime of strongly overlapping ones...
December 15, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29277685/cardiac-rhythm-and-pacemaking-abnormalities-in-patients-affected-by-endemic-pemphigus-in-colombia-may-be-a-result-of-deposition-of-autoantibodies-complement-fibrinogen-and-other-molecules
#11
Ana Maria Abreu Velez, Michael S Howard, Jorge Enrique Velazquez-Velez
BACKGROUND: We showed that one third of the patients affected by endemic pemphigus foliaceus in El Bagre, Colombia (El Bagre-EPF) display autoreactivity to the heart. OBJECTIVE: We aim to investigate rhythm disturbances with presence of autoantibodies and correlate them with electrocardiographic changes in these patients. METHODS: We performed a study comparing 30 patients and 30 controls from the endemic area, matched by demographics including age, sex and weight; work activities, comorbidities, among other variables...
December 22, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29260285/recognizing-child-abuse-in-radiology-1st-edn-by-alan-e-oestreich-and-marguerite-m-car%C3%A3-springer-verlag-berlin-heidelberg-2017-hardcover-97%C3%A2-pp-95-illustrations-english-isbn-13-978-3319443225-hardcover-isbn-10-3319443224-e-book-us-79-99-hardcover-59-99-e-book
#12
https://www.readbyqxmd.com/read/29249317/chicken-macrophages-infected-with-salmonella-s-enteritidis-or-s-heidelberg-produce-differential-responses-in-immune-and-metabolic-signaling-pathways
#13
Haiqi He, Ryan J Arsenault, Kenneth J Genovese, Casey Johnson, Michael H Kogut
Protein kinases act in coordination with phosphatases to control protein phosphorylation and regulate signaling pathways and cellular processes involved in nearly every functions of cell life. Salmonella are known to manipulate the host kinase network to gain entrance and survive inside host cells. The effect of Salmonella infection on the host kinase network has been studied in mammalian cells, but information is largely lacking in chicken immune cells. Our previous study indicated that chicken macrophage cells respond differentially to different Salmonella strains...
January 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29246964/first-person-anne-rademacher
#14
(no author information available yet)
First Person is a series of interviews with the first authors of a selection of papers published in Journal of Cell Science, helping early-career researchers promote themselves alongside their papers. Anne Rademacher is the first author on 'Real-time observation of light-controlled transcription in living cells', published in Journal of Cell Science. Anne is a PhD student in the laboratory of Karsten Rippe at the German Cancer Research Center and the Bioquant institute, Heidelberg, Germany, investigating the transcriptional silencing and activation of heterochromatin by using optogenetic tools and other microscopy methods...
December 15, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/29240464/analysis-of-agreement-of-retinal-layer-thickness-measures-derived-from-the-segmentation-of-horizontal-and-vertical-spectralis-oct-macular-scans
#15
Natalia Gonzalez Caldito, Bhavna Antony, Yufan He, Andrew Lang, James Nguyen, Alissa Rothman, Esther Ogbuokiri, Ama Avornu, Laura Balcer, Elliot Frohman, Teresa C Frohman, Pavan Bhargava, Jerry Prince, Peter A Calabresi, Shiv Saidha
PURPOSE: Optical coherence tomography (OCT) is a reliable method used to quantify discrete layers of the retina. Spectralis OCT is a device used for this purpose. Spectralis OCT macular scan imaging acquisition can be obtained on either the horizontal or vertical plane. The vertical protocol has been proposed as favorable, due to postulated reduction in confound of Henle's fibers on segmentation-derived metrics. Yet, agreement of the segmentation measures of horizontal and vertical macular scans remains unexplored...
December 14, 2017: Current Eye Research
https://www.readbyqxmd.com/read/29237925/corneal-endothelial-cell-loss-in-femtosecond-laser-assisted-descemet-s-stripping-automated-endothelial-keratoplasty-a-12-month-follow-up-study
#16
Yun Feng, Hong-Qiang Qu, Jing Ren, Philipp Prahs, Jing Hong
BACKGROUND: Descemet's stripping automated endothelial keratoplasty (DSAEK) surgery offers a more standardized approach and reliable method to create corneal grafts with an instrument such as a microkeratome. With the development of Descemet's membrane endothelial keratoplasty, an excellent clinical outcome is seen in the treatment of corneal endothelial dysfunctions, which indicates that thinner corneal graft results in better clinical outcome. With the recent development of the femtosecond laser, ultrathin corneal graft preparation has become possible...
December 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/29235544/relationship-of-corneal-hysteresis-and-optic-nerve-parameters-in-healthy-myopic-subjects
#17
Kunliang Qiu, Xuehui Lu, Riping Zhang, Geng Wang, Mingzhi Zhang
The association between corneal biomechanical properties and glaucoma is an area of much interest. We determined the relationship between corneal hysteresis (CH) and optic nerve parameters in healthy myopic subjects in the current study. CH was measured with Reichert Ocular Response Analyzer in 108 eyes from 108 healthy myopic subjects. All subjects received retinal nerve fiber layer and optic disc imaging Cirrus HD-OCT, GDx ECC, and Heidelberg Retina Tomograph II. None of the tested optic nerve parameters showed statistical significance with CH by using correlation analysis...
December 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29235123/proof-of-principle-of-helium-beam-radiography-using-silicon-pixel-detectors-for-energy-deposition-measurement-identification-and-tracking-of-single-ions
#18
Tim Gehrke, Raya Gallas, Oliver Jäkel, Maria Martišíková
PURPOSE: Hadron therapy has the capability to provide a high dose conformation to tumor regions. However, it requires an accurate target positioning. Thus, the precise monitoring of the patient's anatomical positioning during treatment is desirable. For this purpose, hadron-beam radiography with protons (pRad) and ions (iRad) could be an attractive tool complementing the conventional imaging technologies. On the pathway to an envisaged clinical application, several challenges have to be addressed...
December 12, 2017: Medical Physics
https://www.readbyqxmd.com/read/29234313/food-grade-pimenta-leaf-essential-oil-reduces-the-attachment-of-salmonella-enterica-heidelberg-2011-ground-turkey-outbreak-isolate-on-to-turkey-skin
#19
Divek V T Nair, Anup Kollanoor Johny
Salmonella attached to the poultry skin is a major source of carcass contamination during processing. Once attached to the poultry skin, it is difficult to detach and inactivate Salmonella by commonly used antimicrobial agents since the pathogen is entrapped deeply in the feather follicles and the crevices on the skin. Essential oils could be natural, safe, and effective alternatives to synthetic antimicrobial agents during commercial and organic processing setup. The present study evaluated the efficacy of pimenta (Pimenta officinalis Lindl...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29224926/fully-automated-detection-and-quantification-of-macular-fluid-in-oct-using-deep-learning
#20
Thomas Schlegl, Sebastian M Waldstein, Hrvoje Bogunovic, Franz Endstraßer, Amir Sadeghipour, Ana-Maria Philip, Dominika Podkowinski, Bianca S Gerendas, Georg Langs, Ursula Schmidt-Erfurth
PURPOSE: Development and validation of a fully automated method to detect and quantify macular fluid in conventional OCT images. DESIGN: Development of a diagnostic modality. PARTICIPANTS: The clinical dataset for fluid detection consisted of 1200 OCT volumes of patients with neovascular age-related macular degeneration (AMD, n = 400), diabetic macular edema (DME, n = 400), or retinal vein occlusion (RVO, n = 400) acquired with Zeiss Cirrus (Carl Zeiss Meditec, Dublin, CA) (n = 600) or Heidelberg Spectralis (Heidelberg Engineering, Heidelberg, Germany) (n = 600) OCT devices...
December 8, 2017: Ophthalmology
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