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https://www.readbyqxmd.com/read/28226752/classification-of-sd-oct-volumes-with-multi-pyramids-lbp-and-hog-descriptors-application-to-dme-detections
#1
Khaled Alsaih, Guillaume Lemaitre, Join Massich Vall, Mojdeh Rastgoo, Desire Sidibe, Tien Y Wong, Ecosse Lamoureux, Dan Milea, Carol Y Cheung, Fabrice Meriaudeau, Khaled Alsaih, Guillaume Lemaitre, Join Massich Vall, Mojdeh Rastgoo, Desire Sidibe, Tien Y Wong, Ecosse Lamoureux, Dan Milea, Carol Y Cheung, Fabrice Meriaudeau, Guillaume Lemaitre, Dan Milea, Carol Y Cheung, Desire Sidibe, Ecosse Lamoureux, Join Massich Vall, Mojdeh Rastgoo, Fabrice Meriaudeau, Tien Y Wong, Khaled Alsaih
This paper deals with the automated detection of Diabetic Macular Edema (DME) on Optical Coherence Tomography (OCT) volumes. Our method considers a generic classification pipeline with preprocessing for noise removal and flattening of each B-Scan. Features such as Histogram of Oriented Gradients (HOG) and Local Binary Patterns (LBP) are extracted and combined to create a set of different feature vectors which are fed to a linear-Support Vector Machines (SVM) Classifier. Experimental results show a promising sensitivity/specificity of 0...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28224161/f-element-metalated-dipyrrins-synthesis-and-characterization-of-a-family-of-uranyl-bis-dipyrrinate-complexes
#2
Duer Bolotaulo, Alejandro Metta-Magaña, Skye Fortier
Using an improved, chromatography-free dipyrrin synthesis, the α,β-unsubstituted dipyrrins [RC(C4H2N)2H] (2) (R = tolyl (2toly(l)), p-OMe-C6H4 (2anis), mesityl (2mes), ferrocenyl (2Fc)) were isolated in good to excellent yields. Deprotonation of 2 with Na[N(SiMe3)2] gives the alkali metal salts [Na(DME)n][RC(C4H2N)2] (3) which reacts with UO2Cl2(THF)3 to give the uranyl bis(dipyrrinates) UO2[RC(C4H2N)2]2(L) (L = THF (4R-THF); DMAP (4R-DMAP)) (R = tolyl, p-OMe-C6H4, mesityl, ferrocenyl). The THF adducts, 4R-THF, are unstable in aromatic and nonpolar solvents and rapidly decompose to 2 and an intractable uranium-containing solid...
February 22, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28221030/control-of-grafting-density-and-distribution-in-graft-polymers-by-living-ring-opening-metathesis-copolymerization
#3
Tzu-Pin Lin, Alice B Chang, Hsiang-Yun Chen, Allegra L Liberman-Martin, Christopher M Bates, Matthew J Voegtle, Christina A Bauer, Robert H Grubbs
Control over polymer sequence and architecture is crucial to both understanding structure-property relationships and designing functional materials. In pursuit of these goals, we developed a new synthetic approach that enables facile manipulation of the density and distribution of grafts in polymers via living ring-opening metathesis polymerization (ROMP). Discrete endo,exo-norbornenyl dialkylesters (dimethyl DME, diethyl DEE, di-n-butyl DBE) were strategically designed to copolymerize with a norbornene-functionalized polystyrene (PS), polylactide (PLA), or polydimethylsiloxane (PDMS) macromonomer mediated by the 3rd generation catalyst (G3)...
February 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28203186/real-life-iluvien-fluocinolone-acetonide-case-study-rapid-drying-of-the-macula-and-improved-vision-within-2-years-after-therapy-initiation
#4
Hibba Quhill, Fahd Quhill
IMPORTANCE: A case showing sustained structural and functional responses 2 years after a single treatment with ILUVIEN (0.2 µg/day fluocinolone acetonide, FAc) despite suboptimal responses to ranibizumab. OBSERVATIONS: A 68-year-old female patient with diabetic macular oedema (DME) from type 2 diabetes mellitus was first diagnosed in October 2010 and had a baseline visual acuity (VA) of 46 Early Treatment Diabetic Retinopathy Study (ETDRS) letters in the left eye...
September 2016: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28196198/en-face-doppler-optical-coherence-tomography-measurement-of-total-retinal-blood-flow-in-diabetic-retinopathy-and-diabetic-macular-edema
#5
ByungKun Lee, Eduardo A Novais, Nadia K Waheed, Mehreen Adhi, Talisa E de Carlo, Emily D Cole, Eric M Moult, WooJhon Choi, Mark Lane, Caroline R Baumal, Jay S Duker, James G Fujimoto
Importance: Alterations in ocular blood flow play an important role in the pathogenesis and progression of diabetic retinopathy (DR). However, the measurement of retinal blood flow in clinical studies has been challenging. En face Doppler optical coherence tomography (OCT) provides an effective method for measuring total retinal blood flow (TRBF) in the clinic. Objective: To investigate TRBF in eyes with DR of varying severity, with or without diabetic macular edema (DME), using en face Doppler OCT...
February 9, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28196053/choroidal-thickness-in-diabetic-retinopathy-assessed-with-swept-source-optical-coherence-tomography
#6
Inês Laíns, Katherine E Talcott, Ana R Santos, João H Marques, Pedro Gil, João Gil, João Figueira, Deeba Husain, Ivana K Kim, Joan W Miller, Rufino Silva, John B Miller
PURPOSE: To compare the choroidal thickness (CT) of diabetic eyes (different stages of disease) with controls, using swept-source optical coherence tomography. METHODS: A multicenter, prospective, cross-sectional study of diabetic and nondiabetic subjects using swept-source optical coherence tomography imaging. Choroidal thickness maps, according to the nine Early Treatment Diabetic Retinopathy Study (ETDRS) subfields, were obtained using automated software. Mean CT was calculated as the mean value within the ETDRS grid, and central CT as the mean in the central 1 mm...
February 10, 2017: Retina
https://www.readbyqxmd.com/read/28195620/significant-bilateral-response-in-diabetic-macular-edema-after-single-unilateral-intravitreal-aflibercept-injection
#7
Ehsan Rahimy, Omondi Nyong'o, Theodore Leng
A 61-year-old patient with bilateral, treatment-naïve, diffuse diabetic macular edema (DME) that had been progressing during the previous 12 months received a single intravitreal injection of aflibercept (Eylea; Regeneron, Tarrytown, NY) to the left eye. At 2-week follow-up, noticeable bilateral improvement of the DME was observed by spectral-domain optical coherence tomography imaging with commensurate improvement of visual acuity to 20/30 bilaterally. [Ophthalmic Surg Lasers Imaging Retina. 2017;48:167-169...
1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28195619/efficacy-of-the-intravitreal-sustained-release-dexamethasone-implant-for-diabetic-macular-edema-refractory-to-anti-vascular-endothelial-growth-factor-therapy-meta-analysis-and-clinical-implications
#8
Zainab Khan, Robin K Kuriakose, Maryam Khan, Eric K Chin, David R P Almeida
BACKGROUND AND OBJECTIVE: To assess the effect on best-corrected visual acuity (BCVA) and efficacy of the intravitreal sustained-release 0.7 mg dexamethasone implant (Ozurdex; Allergan, Irvine, CA) in patients with recalcitrant diabetic macular edema (DME). PATIENTS AND METHODS: Meta-analysis utilizing the MOOSE framework and a random effects model. Studies included adults undergoing treatment with Ozurdex for DME. The methodologic quality of each study was assessed using the MINORS and the Cochrane Collaboration Risk of Bias for randomized studies...
February 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28187882/an-anomaly-detection-approach-for-the-identification-of-dme-patients-using-spectral-domain-optical-coherence-tomography-images
#9
Désiré Sidibé, Shrinivasan Sankar, Guillaume Lemaître, Mojdeh Rastgoo, Joan Massich, Carol Y Cheung, Gavin S W Tan, Dan Milea, Ecosse Lamoureux, Tien Y Wong, Fabrice Mériaudeau
This paper proposes a method for automatic classification of spectral domain OCT data for the identification of patients with retinal diseases such as Diabetic Macular Edema (DME). We address this issue as an anomaly detection problem and propose a method that not only allows the classification of the OCT volume, but also allows the identification of the individual diseased B-scans inside the volume. Our approach is based on modeling the appearance of normal OCT images with a Gaussian Mixture Model (GMM) and detecting abnormal OCT images as outliers...
February 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28180033/platform-independent-cirrus-and-spectralis-thickness-measurements-in-eyes-with-diabetic-macular-edema-using-fully-automated-software
#10
Alex S Willoughby, Stephanie J Chiu, Rachel K Silverman, Sina Farsiu, Clare Bailey, Henry E Wiley, Frederick L Ferris, Glenn J Jaffe
PURPOSE: We determine whether the automated segmentation software, Duke Optical Coherence Tomography Retinal Analysis Program (DOCTRAP), can measure, in a platform-independent manner, retinal thickness on Cirrus and Spectralis spectral domain optical coherence tomography (SD-OCT) images in eyes with diabetic macular edema (DME) under treatment in a clinical trial. METHODS: Automatic segmentation software was used to segment the internal limiting membrane (ILM), inner retinal pigment epithelium (RPE), and Bruch's membrane (BM) in SD-OCT images acquired by Cirrus and Spectralis commercial systems, from the same eye, on the same day during a clinical interventional DME trial...
February 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/28178701/a-nonrandomized-open-label-multicenter-phase-4-pilot-study-on-the-effect-and-safety-of-iluvien%C3%A2-in-chronic-diabetic-macular-edema-patients-considered-insufficiently-responsive-to-available-therapies-respond
#11
João Figueira, José Henriques, Miguel Amaro, Vítor Rosas, Dalila Alves, José Cunha-Vaz
PURPOSE: The aim of this study was to assess the effectiveness and safety of ILUVIEN® in patients with chronic diabetic macular edema (DME) who were insufficiently responsive to prior therapies. METHODS: This is a prospective, nonrandomized, multicenter, open-label, phase 4 pilot study assessing the effectiveness and safety of ILUVIEN® involving 12 patients insufficiently responsive to available therapies. Assessments were performed at screening, baseline, week 1, and months 1, 3, 6, 9, and 12...
February 9, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28176171/comparison-of-efficacy-of-intravitreal-ranibizumab-between-non-vitrectomized-and-vitrectomized-eyes-with-diabetic-macular-edema
#12
Yen-Yi Chen, Pei-Ying Chen, Fang-Ting Chen, Yun-Ju Chen, Jia-Kang Wang
PURPOSE: To compare the efficacy of intravitreal ranibizumab between non-vitrectomized and vitrectomized eyes with diabetic macular edema (DME). STUDY DESIGN: A retrospective, nonrandomized, and comparative study. METHODS: From May 2013 to March 2016, 148 eyes of 148 patients with treatment-naïve center-involving DME were reviewed in one institution. Forty-six eyes underwent prior vitrectomy at least 3 months ago, and 102 eyes did not receive any vitrectomy...
February 7, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28174777/synthesis-and-structural-study-of-new-metallasilsesquioxanes-of-potassium-and-uranium
#13
Stephan Gießmann, Volker Lorenz, Phil Liebing, Liane Hilfert, Axel Fischer, Frank T Edelmann
The first metallasilsesquioxanes comprising potassium and uranium have been synthesized and structurally characterized by single-crystal X-ray diffraction. (Cy7Si7O12)2K6(DME)4 (2; Cy = cyclohexyl) is a centrosymmetric dimer, in which the two silsesquioxide ligands are interconnected by μ3- and μ4-bridging siloxide moieties. (Cy7Si7O12)2U(VI) (3) represents the first metallasilsesquioxane complex of an actinide element, featuring a U atom that is coordinated by two tridentate silsesquioxide ligands in a distorted octahedral fashion...
February 8, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28171859/comparison-of-55%C3%A2-wide-field-spectral-domain-optical-coherence-tomography-and-conventional-30%C3%A2-optical-coherence-tomography-for-the-assessment-of-diabetic-macular-edema
#14
Marion R Munk, Joel Lincke, Helena Giannakaki-Zimmermann, Andreas Ebneter, Sebastian Wolf, Martin S Zinkernagel
PURPOSE: To compare conventional 30° spectral domain optical coherence tomography (SD-OCT) with 55° wide-field SD-OCT for the assessment of diabetic macular edema (DME). METHODS: This study included 50 DME patients. Both 55° and 30° SD-OCT was conducted. Two readers evaluated scans according to a standardized grading protocol. Intergrader agreement as well as agreement between 30° and 55° SD-OCT were assessed. RESULTS: Intergrader agreement (κ) was strong and ranged from 0...
February 8, 2017: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/28168812/optical-coherence-tomography-angiography-of-macular-telangiectasia-type-1-comparison-with-mild-diabetic-macular-edema
#15
Lei Mao, Si-Si Weng, Yuan-Yuan Gong, Su-Qin Yu
OBJECTIVE: The present study aimed to investigate the characteristics of macular telangiectasia type 1 (Mac tel type 1) using spectral-domain optical coherence tomography angiography (OCTA) and compare them with the characteristics of mild diabetic macular edema (DME), to provide a new objective method for quick clinical diagnosis and treatment. METHODS: A retrospective comparative analysis of 9 Mac tel type 1, 15 DME, and 15 normal eyes was performed using fluorescein angiography, spectral-domain optical coherence tomography, and OCTA...
February 7, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28165610/diabetic-macular-edema-outcomes-in-eyes-treated-with-fluocinolone-acetonide-0-2-%C3%A2%C2%B5g-d-intravitreal-implant-real-world-uk-experience
#16
Ibraheem El-Ghrably, David H W Steel, Maged Habib, Daniela Vaideanu-Collins, Sridhar Manvikar, Roxane J Hillier
PURPOSE: To conduct an observational, multicenter study to evaluate real-world clinical efficacy and safety of the 0.2 µg/day fluocinolone acetonide (FAc) implant in the treatment of patients with chronic diabetic macular edema (DME) in 3 large hospital ophthalmology departments in the United Kingdom. METHODS: Fluocinolone acetonide implants were inserted into the study eyes following a suitable washout period; phakic eyes received FAc implant following cataract surgery...
February 6, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28161147/factors-associated-with-worsening-proliferative-diabetic-retinopathy-in-eyes-treated-with-panretinal-photocoagulation-or-ranibizumab
#17
Susan B Bressler, Wesley T Beaulieu, Adam R Glassman, Jeffrey G Gross, Lee M Jampol, Michele Melia, Mark A Peters, Michael E Rauser
PURPOSE: To compare rates and identify predictive factors for events that represent worsening of proliferative diabetic retinopathy (PDR) in eyes treated with panretinal photocoagulation (PRP) or ranibizumab. DESIGN: Randomized clinical trial (55 United States sites). PARTICIPANTS: Three hundred ninety-four study eyes from 305 adults with PDR, visual acuity (VA) 20/320 or better, and no history of PRP. INTERVENTION: Panretinal photocoagulation or intravitreous ranibizumab injections (0...
February 1, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28160192/study-of-aqueous-cytokines-in-patients-with-different-patterns-of-diabetic-macular-edema-based-on-optical-coherence-tomography
#18
Sabyasachi Bandyopadhyay, Samir Kumar Bandyopadhyay, Mita Saha, Abhik Sinha
PURPOSE: To compare aqueous angiogenic and inflammatory cytokine concentrations in different patterns of diabetic macular edema (DME) based on optical coherence tomography (OCT). METHODS: This prospective study was conducted between July 1, 2015, and March 31, 2016, for 9 months. Aqueous samples were obtained from 52 consecutive DME patients and 16 controls. DME patients were divided according to OCT patterns into diffuse retinal thickening (DRT; n = 17), cystoid macular edema (CME; n = 20) and serous retinal detachment (SRD; n = 15) groups...
February 3, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28154573/differentially-methylated-epiloci-generated-from-numerous-genotypes-of-contrasting-tolerances-are-associated-with-osmotic-tolerance-in-rice-seedlings
#19
Hui Xia, Weixia Huang, Jie Xiong, Shuaigang Yan, Tao Tao, Jiajia Li, Jinhong Wu, Lijun Luo
DNA methylation plays an essential role in plant responses to environmental stress. Since drought develops into a rising problem in rice cultivation, investigations on genome-wide DNA methylation in responses to drought stress and in-depth explorations of its association with drought-tolerance are required. For this study, 68 rice accessions were used for an evaluation of their osmotic-tolerance related to 20% PEG6000 simulated physiological traits. The tolerant group revealed significantly higher levels of total antioxidant capacity and higher contents of H2O2 in both normal and osmotic-stressed treatments, as well as higher survival ratios...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28152140/functional-and-anatomical-outcomes-in-patients-with-serous-retinal-detachment-in-diabetic-macular-edema-treated-with-ranibizumab
#20
Audrey Giocanti-Aurégan, Linda Hrarat, Lise M Qu, Valérie Sarda, Marouane Boubaya, Vincent Levy, Gilles Chaine, Franck Fajnkuchen
Purpose: To assess the effect of serous retinal detachment (SRD) on functional and anatomical outcomes in ranibizumab-treated patients with diabetic macular edema (DME). Methods: All consecutive ranibizumab-treated patients with SRD were included in this retrospective study. For each patient with SRD, a patient without SRD with the same baseline best-corrected visual acuity (BCVA) was randomly included for adjustment on their baseline BCVA. All patients with SRD were included in group 1 (G1) and those without SRD in G2...
February 1, 2017: Investigative Ophthalmology & Visual Science
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