نتایج جستجو برای: optical tomography

تعداد نتایج: 426255  

Journal: :iranian journal of neurology 0
rana sorkhabi associate professor, department of ophthalmology, nikookari eye hospital, tabriz university of medical sciences, tabriz, iran. somaiyeh mostafaei resident, department of neurology, imam reza hospital, tabriz university of medical sciences, tabriz, iran mohammadhosein ahoor assistant professor, department of ophthalmology, nikookari eye hospital, tabriz university of medical sciences, tabriz, iran mahnaz talebi associate professor, department of neurology, neuroscience research center, tabriz university of medical sciences, tabriz, iran

background: headache is one of the most disturbing symptoms with common neurological signs. variations in optic nerve perfusion quality or retinal microcirculation may end up in ganglion cell damage in patients with migraine. methods: sixty patients diagnosed with migraine and thirty normal individuals were evaluated in groups including migraine with aura, migraine without aura and controls. re...

Journal: :journal of medical signals and sensors 0
seyed salman zakariaee mikaeil molazadeh abbas takavar alireza shirazi asghar mesbahi ahad zeinali

in radiation cancer treatments, the most of the side effects could be minimized using a proper dosimeter. gel dosimeter is the only three‑dimensional dosimeter and magnetic resonance imaging (mri) is the gold standard method for gel dosimeter readout. because of hard accessibility and high cost of sample reading by mri systems, some other alternative methods were developed. the optical computed...

Journal: :بینا 0
محمد پاکروان m pakravan ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم شیلا آرامش sh aramesh ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم شاهین یزدانی sh yazdani ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم سعید کریمی s karimi ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم مهدی یاسری m yaseri ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم مسیح صدیق رحیم آبادی m sedigh-rahimabadi ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم

purpose: to determine peripapillary retinal nerve fiber layer (rnfl) thickness by three-dimensional optical coherence tomography (3d-oct) in a normal iranian population and to evaluate the concordance of these measurements with those obtained by the second generation of optical coherence tomography (oct ii). methods: in a cross-sectional observational study, 96 normal iranian subjects 20-53 yea...

Journal: :journal of current ophthalmology 0
قاسم فخرایی ghasem fakhraie صدیقه کهنسال sedigheh kohansal یدا... اسلامی yadollah eslami محمود جباروند mahmoud jabbarvand رضا زارعی reza zarei محسن رفیع زاده seyed mohsen rafizadeh محمدباقر رجبی

purpose : to evaluate usefulness of anterior segment optical coherence tomography (as-oct) in evaluation of filtering bleb functionality and to correlate its findings with clinical bleb examination methods : in this cross-sectional, descriptive study 55 eyes with apparently functional bleb were evaluated. following a comprehensive ophthalmic examination, filtering bleb grading was performed bas...

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...

Asghar Mesbahi, Seyed-Salman Zakariaee

Introduction The purpose of the current study was to determine optical sensitivity of N-isopropyl acrylamide NIPAM and polyacrylamide gelatin and tetrakis hydroxymethyl phosphoniun chloride (PAGAT) polymer gels for different wavelength of visible light spectrum applied in optical computed tomography method. Materials and Methods NIPAM and PAGAT polymer gels with conventional formulations used f...

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: :iranian journal of medical physics 0
asghar mesbahi medical physics department, faculty of medicine, tabriz university of medical sciences, tabriz, iran. radiation oncology department, imam hospital, tabriz, iran

introduction the purpose of the current study was to determine optical sensitivity of n-isopropyl acrylamide nipam and polyacrylamide gelatin and tetrakis hydroxymethyl phosphoniun chloride (pagat) polymer gels for different wavelength of visible light spectrum applied in optical computed tomography method. materials and methods nipam and pagat polymer gels with conventional formulations used f...

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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