نتایج جستجو برای: optical coherence tomography

تعداد نتایج: 473637  

Journal: :American journal of ophthalmology 1995
M R Hee C A Puliafito C Wong E Reichel J S Duker J S Schuman E A Swanson J G Fujimoto

PURPOSE To assess the potential of a new imaging technique, optical coherence tomography, for the diagnosis and monitoring of central serous chorioretinopathy. Optical coherence tomography is a novel noninvasive, noncontact imaging modality that produces high longitudinal resolution, cross-sectional tomographs of ocular tissue. METHODS Optical coherence tomography is analogous to ultrasound, ...

Journal: :بینا 0
مرتضی انتظاری m entezari ophthalmic epidemiology research center, shahid beheshti university of medical sciencesمرکز تحقیقات اپیدمیولوژی بیماری های چشم- دانشگاه علوم پزشکی شهید بهشتی- تهران- ایران مصطفی اسداللهی m asadollahi ophthalmic epidemiology research center, shahid beheshti university of medical sciencesدانشگاه علوم پزشکی شهید بهشتی- تهران- ایران محمدحسن سیفی mh seifi ophthalmic epidemiology research center, shahid beheshti university of medical sciencesمرکز تحقیقات چشم- دانشگاه علوم پزشکی شهید بهشتی- تهران- ایران رضا هداوند r hadavand department of neurology, imam hossein hospital, shahid beheshti university of medical sciences, tehran, iranبیمارستان امام حسین تهران- تهران- ایران ناهید بلادی مقدم beladi moghadam shahid beheshti university of medical sciencesدانشگاه علوم پزشکی شهید بهشتی- تهران- ایران

purpose: to compare peripapillary retinal nerve fiber layer (rnfl) thickness among multiple sclerosis (ms) patients with or without a history of optic neuritis (on) and a healthy control group. methods: in this retrospective case-control study, 59 ms patients were recruited from a neurology clinic of imam hossein hospital. of which, 36 patients had at least one episode of on and 23 others had n...

Journal: :The Journal of laryngology and otology 2009
T Just E Lankenau G Hüttmann H W Pau

OBJECTIVE To introduce the use of optical coherence tomography with an operating microscope for intra-operative evaluation of the human larynx. METHODS A specially equipped operating microscope with integrated spectral domain optical coherence tomography apparatus was used during microlaryngoscopy. RESULTS Technical improvements in optical coherence tomography equipment (e.g. pilot beam, va...

Journal: :The Journal of urology 2012
Hsiang-Chieh Lee Chao Zhou David W Cohen Amy E Mondelblatt Yihong Wang Aaron D Aguirre Dejun Shen Yuri Sheikine James G Fujimoto James L Connolly

PURPOSE We evaluated the feasibility of using optical coherence tomography and optical coherence microscopy technology to assess human kidney morphology. MATERIALS AND METHODS A total of 35 renal specimens from 19 patients, consisting of 12 normal tissues and 23 tumors (16 clear cell renal cell carcinomas, 5 papillary renal cell carcinomas and 2 oncocytomas) were imaged ex vivo after surgical...

Journal: :journal of current ophthalmology 0
محمد ریاضی اصفهانی mohammad riazi esfahani الینا غفاری elina ghaffari زهرا اعلمی هرندی zahra aalami harandi فدرا حاجی زاده fedra hajizadeh

purpose : to determine the optical coherence tomography (oct) findings in eyes with idiopathic perifoveal retinal telangiectasis (ipt) methods : this study is a retrospective review of patient charts, oct, fundus photography, related to 16 eyes (11 patients). results : the most consistent finding of idiopathic perifoveal telangiectasia seen in 93.7% of eyes (15 eyes) on oct was the presence of ...

Masoud Aghsaei Fard,

Assessment of the peripapillary nerve fiber layer and macular thickness can be determined in ophthalmology using optical coherence tomography (OCT). Decreased nerve fiber layer thickness and macular ganglion cell thickness in optic nerve ischemia have been correlated with visual field loss. OCT allows deep optic nerve head evaluation which helps understand pathophysiology of diseases.  Furtherm...

امجدی, احمد, قاسمی فلاورجانی, خلیل, معظمی گودرزی, نیلوفر,

In fourier domain optical coherence tomography, we can measure the optical thickness ( refractive index n times thickness d), to obtain the retinal layers in order to diagnose many disorders. In this work, we introduce a new method for measurement of refractive index and physical thickness of multiple layers simultaneously by Fourier domain optical coherence tomography, without additional infor...

Introduction:Visualization of inner ear structures is a valuable strategy for researchers and clinicians working on hearing pathologies. Optical coherence tomography (OCT) is a high-resolution imaging technology which may be used for the visualization of tissues. In this experimental study we aimed to evaluate inner ear anatomy in well-prepared human labyrinthine bones.Materials and Methods:Thr...

حتم خانی, شیما, صعودی, رضا, مدرس زاده, مهدی,

  Background: To present an overview of the pharmacologic treatment of pseudophakic macular edema.   Methods: A systematic review of the currently accepted pharmacologic treatments for pseudophakic macular edema. Main outcome parameters include visual acuity and central macular thickness as determined by ocular coherence tomography. Articles retrieved by Pubmed search using keywords pseudophaki...

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