نتایج جستجو برای: optic coherence tomography

تعداد نتایج: 277875  

2018
Jaclyn Chiang Michael Yapp Angelica Ly Michael P. Hennessy Michael Kalloniatis Barbara Zangerl

SIGNIFICANCE This study resulted in the identification of an optic nerve head (ONH) feature associated with tilted optic discs, which might potentially contribute to ONH pathologies. Knowledge of such findings will enhance clinical insights and drive future opportunities to understand disease processes related to tilted optic discs. PURPOSE The aim of this study was to identify novel retinal ...

Journal: :Optics letters 2016
Vicente Durán Peter A Andrekson Víctor Torres-Company

Dual-comb interferometry is a measurement technique that uses two laser frequency combs to retrieve complex spectra in a line-by-line basis. This technique can be implemented with electro-optic frequency combs, offering intrinsic mutual coherence, high acquisition speed and flexible repetition-rate operation. A challenge with the operation of this kind of frequency comb in dual-comb interferome...

Journal: :Archives of neurology 2009
Olivier Outteryck Hélène Zephir Sabine Defoort Marie Bouyon Philippe Debruyne Ikram Bouacha Didier Ferriby Arnaud Lacour Pierre Labalette Jerome de Seze Patrick Vermersch

BACKGROUND Optical coherence tomography has emerged as a new tool for quantifying axonal loss in multiple sclerosis (MS). A reduction in retinal nerve fiber layer (RNFL) thickness is correlated with Expanded Disability Status Scale score and brain atrophy. OBJECTIVE To investigate RNFL and macular volume measurements using optical coherence tomography in the clinically isolated syndrome popul...

2018
Gözde Hondur Emre Göktaş Lama Al-Aswad Gülgün Tezel

Purpose This pilot cross-sectional study aimed to determine age-related changes of the retinal nerve fiber layer (RNFL) thickness in retinal periphery by swept-source optical coherence tomography-based analysis. Methods Forty eyes of 40 healthy subjects were studied in three age groups, group 1 (20-40 years, n=15), group 2 (41-60 years, n=14), and group 3 (≥61 years, n=11). Wide-angle swept-s...

Journal: :Archives of ophthalmology 2005
Teresa C Chen Barry Cense Mark C Pierce Nader Nassif B Hyle Park Seok H Yun Brian R White Brett E Bouma Guillermo J Tearney Johannes F de Boer

OBJECTIVE To introduce a new ophthalmic optical coherence tomography technology that allows unprecedented simultaneous ultra-high speed and ultra-high resolution. METHODS Using a superluminescent diode source, a clinically viable ultra-high speed, ultra-high resolution spectral domain optical coherence tomography system was developed. RESULTS In vivo images of the retina, the optic nerve he...

Journal: :Brain : a journal of neurology 2012
Stephan Klebe Christel Depienne Sylvie Gerber Georges Challe Mathieu Anheim Perrine Charles Estelle Fedirko Elodie Lejeune Julien Cottineau Alfredo Brusco Hélène Dollfus Patrick F Chinnery Cecilia Mancini Xavier Ferrer Guilhem Sole Alain Destée Jean-Michel Mayer Bertrand Fontaine Jérôme de Seze Michel Clanet Elisabeth Ollagnon Philippe Busson Cécile Cazeneuve Giovanni Stevanin Josseline Kaplan Jean-Michel Rozet Alexis Brice Alexandra Durr

Mutations in the spastic paraplegia 7 (SPG7) gene encoding paraplegin are responsible for autosomal recessive hereditary spasticity. We screened 135 unrelated index cases, selected in five different settings: SPG7-positive patients detected during SPG31 analysis using SPG31/SPG7 multiplex ligation-dependent probe amplification (n = 7); previously reported ambiguous SPG7 cases (n = 5); patients ...

Journal: :JAMA otolaryngology-- head & neck surgery 2013
Jennifer L Lin Amy Y Yau Jonathon Boyd Ashley Hamamoto Erica Su Lauren Tracy Andrew E Heidari Alex H Wang Gurpreet Ahuja Zhongping Chen Brian J Wong

IMPORTANCE Subglottic stenosis (SGS) is a severe, acquired, potentially life-threatening disease that can be caused by endotracheal tube intubation. Newborns and neonates are particularly susceptible to SGS owing to the small caliber of their airway. OBJECTIVE To demonstrate optical coherence tomography (OCT) capabilities in detecting injury and scar formation using a rabbit model. Optical co...

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