نتایج جستجو برای: optical coherence

تعداد نتایج: 314691  

Journal: :journal of current ophthalmology 0
محمد ریاضی اصفهانی mohammad riazi esfahani حمیدرضا ترابی hamid reza torabi زهرا اعلمی هرندی zahra aalami harandi محمد زارعی mohammad zarei

purpose : the aim of this study is to measure the endogenous cortisol levels in the patients with central serous chorioretinopathy (cscr) and also, evaluate the short-term effect of oral ketoconazole in the treatment of both acute and chronic cscr. methods : in this prospective interventional case series 12 patients with acute cscr and 7 patients with chronic cscr (including one patient with bi...

Journal: :journal of current ophthalmology 0
محمدمهدی پرورش mohammad-mehdi parvaresh مرجان ایمانی marjan imani محسن بهمنی کشکولی mohsen bahmani-kashkouli مصطفی سلطان سنجری mostafa soltan-sanjari

purpose : to determine the nerve fiber layer and macular thickness by optical coherence tomography (oct) in emmetropic, high-myopic and high-hyperopic eyes methods : one hundred five eyes of 55 randomly selected healthy subjects between 20 and 30 years old were included in this study. the eyes were categorized in three groups (high-myopic, emmetropic and high-hyperopic) according to their cyclo...

Journal: :بینا 0
نوید نیلفروشان n nilforushan تهران- خ ستارخان - خ نیایش - بیمارستان حضرت رسول اکرم معصومه احدی m ahadi تهران- خ ستارخان - خ نیایش - بیمارستان حضرت رسول اکرم

purpose: to measure peripapillary retinal nerve fiber layer (rnfl) thickness in normal human eyes by optical coherence tomography (oct). methods: eighty-one eyes of 45 normal participants were studied. each person underwent a complete ophthalmic examinations, including measurement of visual aquity and intraocular pressure and evaluation of the anterior segment, optic disc, and retinal nerve fib...

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...

Mohammad R. N. Avanaki Mohammad R. Pishgoo Reza Ebrahimpour

Optical Coherence Tomography (OCT) uses the spatial and temporal coherence properties of optical waves backscattered from a tissue sample to form an image. An inherent characteristic of coherent imaging is the presence of speckle noise. In this study we use a new ensemble framework which is a combination of several Multi-Layer Perceptron (MLP) neural networks to denoise OCT images. The noise is...

2017
Wen-Chuan Kuo Meng-Chun Kao Mei-Yung Tsou Chien-Kun Ting

BACKGROUND No reports exist concerning in vivo optical coherence tomography visualization of the epidural space and the blood patch process in the epidural space. In this study, we produced real-time two-dimensional and reconstructed three-dimensional images of the epidural space by using optical coherence tomography in a porcine model. We also aimed to produce three-dimensional optical coheren...

Journal: :journal of electrical and computer engineering innovations 2014
mohammad r. pishgoo mohammad r. n. avanaki reza ebrahimpour

optical coherence tomography (oct) uses the spatial and temporal coherence properties of optical waves backscattered from a tissue sample to form an image. an inherent characteristic of coherent imaging is the presence of speckle noise. in this study we use a new ensemble framework which is a combination of several multi-layer perceptron (mlp) neural networks to denoise oct images. the noise is...

Journal: :Revista espanola de cardiologia 2015
Jung-Sun Kim Dong-Ho Shin Byeong-Keuk Kim Young-Guk Ko Donghoon Choi Yangsoo Jang Myeong-Ki Hong

INTRODUCTION AND OBJECTIVES The clinical benefits of optical coherence tomography-guided percutaneous coronary intervention are unclear. Therefore, in this study we sought to evaluate the impact of optical coherence tomography guidance on stent strut coverage following drug-eluting stent implantation. METHODS A total of 101 patients in 105 lesions were randomly assigned to receive percutaneou...

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 ...

ژورنال: :فصلنامه علمی - پژوهشی طب توانبخشی 2013
محمد آقازاده امیری بهرام خسروی سمیه هاشمیان فر سید مهدی طباطبائی مسعود صادقی

مقدمه و اهداف در برخی از موارد، درمان تنبلی چشم منجر به بینایی کامل نمی شود. در معاینات اولیه بیمار با ابزار معمول هیچگونه ضایعه پاتولوژیک و ناهنجاریهای آناتومیک مشاهده نمی گردد. آیا این مسئله مربوط به نقص تکامل مسیر بینائی است یا ناشی از نقصان ساختار شبکیه؟ این پژوهش به منظور تعیین ضخامت فووه آ در چشم بیماران مبتلا به تنبلی آنیزومتروپیک یکطرفه مقاوم به درمان و مقایسه آن با چشم سالم مقابل طراحی...

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