keyword
MENU ▼
Read by QxMD icon Read
search

Optical coherence tomography

keyword
https://www.readbyqxmd.com/read/28644852/comparisons-of-retinal-vessel-diameter-and-glaucomatous-parameters-between-both-eyes-of-subjects-with-clinically-unilateral-pseudoexfoliation-syndrome
#1
Yasuyuki Takai, Masaki Tanito, Tetsuro Omura, Ryo Kawasaki, Yumiko Kawasaki, Akihiro Ohira
PURPOSE: Pseudoexfoliation syndrome (PEX), the most common identifiable cause of open-angle glaucoma, might affect the retinal hemodynamics. To test this, we compared retinal vessel diameter and glaucoma-related parameters between eyes with pseudoexfoliation material (PE+) and fellow unaffected (PE-) eyes of patients with clinically unilateral PEX. METHODS: The medical records of 30 consecutive Japanese subjects were reviewed retrospectively. The retinal vessel diameters were measured and expressed as the central retinal arteriolar equivalent (CRAE) and central retinal venular equivalent (CRVE) using standardized software...
2017: PloS One
https://www.readbyqxmd.com/read/28644210/frequency-domain-optical-coherence-tomography-plaque-morphology-in-stable-coronary-artery-disease-sex-differences
#2
Luca Mariani, Francesco Burzotta, Cristina Aurigemma, Andrea Romano, Giampaolo Niccoli, Antonio M Leone, Italo Porto, Carlo Trani, Filippo Crea
BACKGROUND: The cause for discrepancy in the clinical presentation and outcome of coronary artery disease (CAD) between men and women is not established. Different prevalences of risk factors or specific sex-related atherosclerotic aspects have been advocated as possible explanations. We investigated coronary plaque morphology looking at possible differences in plaque vulnerability between men and women with stable CAD. PATIENTS AND METHODS: We retrospectively collected and analyzed clinical data and coronary plaque morphology by frequency-domain optical coherence tomography in men and women with stable CAD...
June 21, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28644209/an-atypical-case-of-paracentral-acute-middle-maculopathy
#3
Cheryl Haskes, Shannon Santapaola, Jordan Zinn
PURPOSE: This is a case presentation of paracentral acute middle maculopathy in a 33-year-old white man with borderline hyperlipidemia. Paracentral acute middle maculopathy was originally thought to be a variant of acute macular neuroretinopathy; however, it is now generally accepted that these two conditions are separate disease entities. The etiology, evolution, and pathophysiology of acute macular neuroretinopathy and paracentral acute middle maculopathy are discussed, as well as current diagnostic techniques...
June 21, 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28644178/temporal-thinning-in-sickle-cell-retinopathy-is-associated-with-diminished-perfusion-on-octa-and-dense-scotoma-on-microperimetery
#4
Kumar Sambhav, Sandeep Grover, Kakarla V Chalam
PURPOSE: To establish correlation between the structural compromise (capillary loss and hypoperfusion on optical coherence tomography [optical coherence tomography angiography]) with perimacular functional impairment noted on microperimetry. METHODS: Retrospective case series. Clinical records and multimodal imaging findings of patients presenting with sickle cell disease were reviewed. RESULTS: Three eyes of three patients (two men) were included in the study with a visual acuity of 20/20 and no sickle cell retinopathy...
June 20, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28643709/comparison-of-central-corneal-thickness-with-four-noncontact-devices-an-agreement-analysis-of-swept-source-technology
#5
Erhan Ozyol, Pelin Özyol
PURPOSE: The purpose of this study was to compare the central corneal thickness (CCT) measurements of four noncontact devices in healthy eyes. MATERIALS AND METHODS: In a sample of 45 healthy controls, CCT was measured using an optical biometer (IOLMaster 700) based on swept-source optical coherence tomography (SS-OCT), high-resolution rotating Scheimpflug camera system (Pentacam HR), spectral-domain OCT (SD-OCT) device with an anterior segment module (Spectralis), and noncontact pachymetry (NCP) device (Topcon TRK-2P)...
June 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28643708/residency-evaluation-and-adherence-design-study-young-ophthalmologists-perception-of-their-residency-programs-clinical-and-surgical-skills
#6
Parikshit Gogate, Partha Biswas, Sundaram Natarajan, Dandapani Ramamurthy, Debashish Bhattacharya, Karl Golnik, Barun Kumar Nayak
BACKGROUND: Residency training is the basis of good clinical and surgical practice. PURPOSE: The aim is to know the demographics, training experience, and perception of young ophthalmologists to improve the present residency programs in India. SETTING: Young ophthalmologists trained in India. METHODS: A survey was conducted by the Academic and Research Committee of the All India Ophthalmology Society, in 2014-2016 of young ophthalmologists (those trained between 2002 and 2012, with 2-10 years' postresidency experience) to gauge teaching of clinical and surgical skills during the postgraduate residency program...
June 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28643319/-progress-of-the-application-of-optical-coherence-tomography-in-gastrointestinal-tumor-surgery
#7
Yongsheng Li, Hao Liu, Haipeng Huang, Yu Zhu, Haijun Deng, Jiang Yu, Site Luo, Li Huo, Li Lin, Huikai Xie, Guoxin Li
Optical coherence tomography (OCT) is a real-time, cross-sectional optical imaging technology. It is analogous to ultrasonography, except that OCT uses light waves instead of sound waves, and can provide three-dimensional morphological images of living tissues with a micrometer resolution. Through the use of endoscopes, needles, catheters and laparoscopes, OCT has demonstrated tremendous imaging potential in tumor surgery. The current studies suggest that OCT has potential for clinical applications in the following fields of gastrointestinal tumor surgery: (1) Early tumor detection and diagnosis: OCT can distinguish differences between polyp tissue, normal tissue and malignant tissue...
June 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28643042/oct-in-alzheimer-s-disease-thinning-of-the-rnfl-and-superior-hemiretina
#8
João Paulo Cunha, Rita Proença, Arnaldo Dias-Santos, Rita Almeida, Helena Águas, Marta Alves, Ana Luísa Papoila, Carlota Louro, António Castanheira-Dinis
BACKGROUND: Peripapillary retinal nerve fiber layer (pRNFL) and internal macular layer thinning have been demonstrated in Alzheimer's disease (AD) with optical coherence tomography (OCT) studies. The purpose of this study is to compare the pRNFL thickness and overall retinal thickness (RT) in AD patients with non-AD patients, using spectral domain optical coherence tomography (SD-OCT) and determine the sectors most characteristically affected in AD. METHODS: A cross-sectional study was performed to determine the pRNFL and overall macular RT thicknesses in AD and non-AD patients, attending a tertiary hospital center...
June 22, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28642823/visualization-of-changes-in-the-foveal-avascular-zone-in-both-observed-and-treated-diabetic-macular-edema-using-optical-coherence-tomography-angiography
#9
Aditya Gill, Emily D Cole, Eduardo A Novais, Ricardo N Louzada, Talisa de Carlo, Jay S Duker, Nadia K Waheed, Caroline R Baumal, Andre J Witkin
BACKGROUND: Central vision loss in diabetic retinopathy is commonly related to diabetic macular edema (DME). The objective of this study was to describe changes between consecutive visits on optical coherence tomography angiography (OCTA) of the foveal avascular zone (FAZ) in eyes with DME. METHODS: 20 eyes from 14 patients with DME were imaged on 2 successive clinic visits separated by at least 1 month. The mean interval between visits was 3.2 months. The only intervention used was intravitreal anti-VEGF in 11 eyes; the others were observed over time without treatment...
2017: International Journal of Retina and Vitreous
https://www.readbyqxmd.com/read/28642677/a-novel-workflow-combining-plaque-imaging-plaque-and-plasma-proteomics-identifies-biomarkers-of-human-coronary-atherosclerotic-plaque-disruption
#10
Regent Lee, Roman Fischer, Philip D Charles, David Adlam, Alessandro Valli, Katalin Di Gleria, Rajesh K Kharbanda, Robin P Choudhury, Charalambos Antoniades, Benedikt M Kessler, Keith M Channon
BACKGROUND: Atherosclerotic plaque rupture is the culprit event which underpins most acute vascular syndromes such as acute myocardial infarction. Novel biomarkers of plaque rupture could improve biological understanding and clinical management of patients presenting with possible acute vascular syndromes but such biomarker(s) remain elusive. Investigation of biomarkers in the context of de novo plaque rupture in humans is confounded by the inability to attribute the plaque rupture as the source of biomarker release, as plaque ruptures are typically associated with prompt down-stream events of myocardial necrosis and systemic inflammation...
2017: Clinical Proteomics
https://www.readbyqxmd.com/read/28641290/long-term-follow-up-of-choroidal-neovascularization-due-to-angioid-streaks-with-pro-re-nata-intravitreal-anti-vegf-treatment
#11
Giovanni Giacomelli, Lucia Finocchio, Ilaria Biagini, Andrea Sodi, Vittoria Murro, Ugo Introini, Monica Varano, Francesco Bandello, Ugo Menchini
PURPOSE: To evaluate the long-term outcomes of intravitreal anti-vascular endothelial growth factor (VEGF) drugs with a pro re nata (PRN) regimen for the treatment of choroidal neovascularization (CNV) secondary to angioid streaks (AS). METHODS: This is a retrospective, multicenter, noncomparative case series of consecutive AS eyes affected by treatment-naïve CNV. A complete ophthalmologic examination was performed every 30-45 days after the loading phase, including fluorescein angiography and/or optical coherence tomography...
June 23, 2017: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/28641034/imaging-of-proximal-lacrimal-system-with-time-domain-anterior-segment-optical-coherence-tomography-in-asian-indian-population
#12
Swati Singh, Arnav Ghosh, Suryasnata Rath
This article reports proximal lacrimal system parameters using Anterior Segment Optical Coherence Tomography (ASOCT-Visante) in an apparently normal Asian Indian population with assessment of any correlation between tear meniscus height and punctal diameter. This was a prospectively designed observational study that included healthy adults, who volunteered for optical coherence tomography imaging (OCT) of their proximal lacrimal system. Time domain ASOCT (Visante) images of the punctum and proximal canaliculus were captured using the high resolution corneal scan protocol...
June 22, 2017: Orbit
https://www.readbyqxmd.com/read/28640951/the-value-of-visual-field-testing-in-the-era-of-advanced-imaging-clinical-and-psychophysical-perspectives
#13
REVIEW
Jack Phu, Sieu K Khuu, Michael Yapp, Nagi Assaad, Michael P Hennessy, Michael Kalloniatis
White-on-white standard automated perimetry (SAP) is widely used in clinical and research settings for assessment of contrast sensitivity using incremental light stimuli across the visual field. It is one of the main functional measures of the effect of disease upon the visual system. SAP has evolved over the last 40 years to become an indispensable tool for comprehensive assessment of visual function. In modern clinical practice, a range of objective measurements of ocular structure, such as optical coherence tomography, have also become invaluable additions to the arsenal of the ophthalmic examination...
June 22, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28640657/retinal-findings-on-oct-in-systemic-conditions
#14
Preeti Patil Chhablani, Vikas Ambiya, Akshay G Nair, Sailaja Bondalapati, Jay Chhablani
PURPOSE: Imaging technology has advanced by leaps and bounds in the recent past and has resulted in a much greater understanding of ocular diseases. The aim of this review article is to summarize optical coherence tomography (OCT) findings of various systemic conditions. METHOD: A systematic literature search of the Medline/PubMed database was performed. English articles up to April 2015 were included. Terms used for search included: Alzheimer's Disease; Multiple Sclerosis; Parkinson's Disease; Behçet's Disease; Schizophrenia; Migraine; Obstructive Sleep Apnea Syndrome; Neurofibromatosis; Sickle Cell Disease; Renal diseases; Lupus Retinopathy; Valsalva Retinopathy; Whiplash Retinopathy; Shaken-Baby Syndrome; Choroidal metastases; Intracranial Hypertension; Drug toxicity; Deferoxamine; Sildenafil; Tamoxifen; Hydroxychloroquine; Chloroquine; Ethambutol; Lead; Sickle Cell Disease; and Thalassemia along with OCT...
June 22, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/28639156/retinal-thickness-in-parafoveal-subfields-and-visual-acuity-after-vitrectomy-for-macula-off-rhegmatogenous-retinal-detachment-repair
#15
Tatsuhiko Sato, Taku Wakabayashi, Nobuhiko Shiraki, Hirokazu Sakaguchi
PURPOSE: To investigate retinal thickness in the central and parafoveal subfields, including segmented analysis of the inner and outer retinal layers, after vitrectomy for macula-off rhegmatogenous retinal detachment (RRD) repair. METHODS: Twenty-four eyes of 24 patients who underwent primary vitrectomy for macula-off RRD repair were enrolled in this study. Spectral-domain optical coherence tomography examination and best-corrected visual acuity (BCVA) measurements were performed at 1, 3, and 6 months after vitrectomy...
June 21, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28639098/a-head-to-head-comparison-of-xinsorb-bioresorbable-sirolimus-eluting-scaffold-versus-metallic-sirolimus-eluting-stent-180-days-follow-up-in-a-porcine-model
#16
Li Shen, Yizhe Wu, Lei Ge, Yaojun Zhang, Qibing Wang, Juying Qian, Zhifen Qiu, Junbo Ge
We aimed to investigate the safety and efficacy of XINSORB bioresorbable sirolimus-eluting scaffold in porcine model. XINSORB scaffolds and metallic Firebird2™ stents were randomly implanted into minipigs' coronary arteries. Angiography, optical coherent tomography (OCT) and histopathological analyses were performed at post-procedure and 14-, 28-, 90-, 180-day follow-up. Thirty-two minipigs were enrolled. Eight XINSORB scaffolds and 8 Firebird2 stents were examined at each time point. Quantitative coronary angiography showed that in-scaffold late luminal loss (LLL) of XINSORB scaffold was 0...
June 21, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28638337/intravitreal-anti-vascular-endothelial-growth-factor-for-macular-edema-due-to-complex-retinal-arterial-macroaneurysms
#17
Caroline Bormann, Jens Heichel, Ute Hammer, Anke Habermann, Thomas Hammer
INTRODUCTION: Complex retinal arterial macroaneurysms (RAM) are often accompanied by hemorrhage and/or affect the macula. We evaluated the effect of intravitreal anti-vascular endothelial growth factor (anti-VEGF) therapy using ranibizumab or aflibercept with or without laser photocoagulation in the treatment of macular edema due to RAM. METHODS: A case report of two patients with secondary macular edema caused by RAM is presented. The first case was a 76-year-old female treated with two 0...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28638245/optical-coherence-tomography-technology-and-quality-improvement-methods-for-optical-coherence-tomography-images-of-skin-a-short-review
#18
REVIEW
Saba Adabi, Zahra Turani, Emad Fatemizadeh, Anne Clayton, Mohammadreza Nasiriavanaki
Optical coherence tomography (OCT) delivers 3-dimensional images of tissue microstructures. Although OCT imaging offers a promising high-resolution method, OCT images experience some artifacts that lead to misapprehension of tissue structures. Speckle, intensity decay, and blurring are 3 major artifacts in OCT images. Speckle is due to the low coherent light source used in the configuration of OCT. Intensity decay is a deterioration of light with respect to depth, and blurring is the consequence of deficiencies of optical components...
2017: Biomedical Engineering and Computational Biology
https://www.readbyqxmd.com/read/28637781/detecting-optic-nerve-head-swelling-on-ultrasound-and-optical-coherence-tomography-in-children-and-young-people-an-observational-study
#19
Annegret Hella Dahlmann-Noor, Gillian W Adams, Moritz Claudius Daniel, Alison Davis, Joanne Hancox, Melanie Hingorani, Patricia Ibanez, Becky McPhee, Himanshu Patel, Marie Restori, Clare Roberts, Maria Theodorou, James Acheson
BACKGROUND: Following high-profile cases, referrals for evaluation of 'suspicious optic discs' to eye clinics in the UK have sharply increased, asking ophthalmologists to reliably distinguish between true and pseudopapilloedema. Optic nerve sheath dilatation (ONSD) on ocular ultrasound (US) is considered a reliable sign of true papilloedema, but this test is not widely available. Recently, anterior bowing of Bruch's membrane (BM) and increased retinal nerve fibre layer thickness on optical coherence tomography (OCT) have emerged as indicators of intracranial hypertension, and OCT is widely available...
June 21, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28637033/quantitative-swept-source-optical-coherence-tomography-of-early-enamel-erosion-in-vivo
#20
Rupert S Austin, Maisalamah Haji Taha, Frederic Festy, Richard Cook, Manoharan Andiappan, Juliana Gomez, Iain A Pretty, Rebecca Moazzez
Swept-source optical coherence tomography (SS-OCT) shows potential for the in vivo quantitative evaluation of micro-structural enamel surface phenomena occurring during early erosive demineralization. This randomized controlled single-blind cross-over clinical study aimed to evaluate the use of SS-OCT for detecting optical changes in the enamel of 30 healthy volunteers subjected to orange juice rinsing (erosive challenge) in comparison to mineral water rinsing (control), according to wiped and non-wiped enamel surface states...
June 22, 2017: Caries Research
keyword
keyword
3448
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"