نتایج جستجو برای: optical tomography

تعداد نتایج: 426255  

Journal: :Optics Express 2007

Journal: :Translational biophotonics 2022

Optical coherence tomography (OCT) has revolutionized ophthalmic diagnosis as a non-invasive, cross-sectional imaging technique in the last 30 years and hence is one of fastest adopted advanced technologies history medicine. A miniaturization OCT devices would not only reduce size but ideally also costs therefore create potential new markets. systems based on photonic integrated circuits (PIC) ...

Journal: :Medical physics 2008
Lihong V Wang

Commercially available high-resolution three-dimensional optical imaging modalities-including confocal microscopy, two-photon microscopy, and optical coherence tomography-have fundamentally impacted biomedicine. Unfortunately, such tools cannot penetrate biological tissue deeper than the optical transport mean free path (approximately 1 mm in the skin). Photoacoustic tomography, which combines ...

Journal: :Journal of biomedical optics 2011
Patrick D Kumavor Chen Xu Andres Aguirre John Gamelin Yasaman Ardeshirpour Behnoosh Tavakoli Saeid Zanganeh Umar Alqasemi Yi Yang Quing Zhu

We present a photoacoustic tomography-guided diffuse optical tomography approach using a hand-held probe for detection and characterization of deeply-seated targets embedded in a turbid medium. Diffuse optical tomography guided by coregistered ultrasound, MRI, and x ray has demonstrated a great clinical potential to overcome lesion location uncertainty and to improve light quantification accura...

Journal: :iranian journal of neurology 0
farzad fatehi department of neurology, shariati hospital, iranian center of neurological research, tehran university of medical sciences, tehran, iran. vahid shaygannejad department of neurology, isfahan university of medical sciences, isfahan, iran lida kiani mehr department of neurology, shariati hospital, iranian center of neurological research, tehran university of medical sciences, tehran, iran alireza dehghani department of ophthalmology, isfahan university of medical sciences, isfahan, iran

background:  optical coherence tomography (oct) is a non-invasive instrument, which can be used to estimate the thickness of the retinal nerve fibre layer (rnfl) and provides an indirect measurement of axonal destruction in multiple sclerosis (ms). the main aim of this study was to find out any correlations between p100 latency in visual evoked potential (vep) and rnfl thickness. methods: the p...

Journal: :بینا 0
مصطفی سلطان سنجری m soltan sanjari تهران- خیابان ستارخان- بیمارستان حضرت رسول اکرم (ص)- مرکزتحقیقات خلیل قاسمی فلاورجانی kh ghasemi falavarjani تهران- خیابان ستارخان- بیمارستان حضرت رسول اکرم (ص)- مرکزتحقیقات محمدمهدی پرورش mm parvaresh تهران- خیابان ستارخان- بیمارستان حضرت رسول اکرم (ص)- مرکزتحقیقات مهدی مدرس زاده m modarreszadeh تهران- خیابان ستارخان- بیمارستان حضرت رسول اکرم (ص)- مرکزتحقیقات مسعود ناصری پور m naseripour تهران- خیابان ستارخان- بیمارستان حضرت رسول اکرم (ص)- مرکزتحقیقات مسیح هاشمی m hashemi تهران- خیابان ستارخان- بیمارستان حضرت رسول اکرم (ص)- مرکزتحقیقات مرضیه نجومی

purpose: to describe the association between optic disc traction and non-arteritic anterior ischemic optic neuropathy (naion). methods: eighty three eyes of 83 patients with naion were evaluated by optical coherence tomography (oct) for detecting vitreous adhesion to the optic nerve head with separation from adjacent retina (partial posterior vitreous detachment). those who were negative for su...

2017
Arnaud Dubois

Full-field optical coherence tomography (FF-OCT) is a recent optical imaging technology based on low-coherence interference microscopy for imaging of semi-transparent samples with ~1 μm spatial resolution. FF-OCT produces en-face tomographic images obtained by arithmetic combination of interferometric images acquired by an array camera. In this paper, we demonstrate a unique multimodal FF-OCT s...

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...

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