Results 81 to 90 of about 446,709 (166)

Association of Retinal Neurodegeneration on Optical Coherence Tomography With Dementia: A Population-Based Study

open access: yesJAMA Neurology, 2018
Importance Retinal structures may serve as a biomarker for dementia, but longitudinal studies examining this link are lacking. Objective To investigate the association of inner retinal layer thickness with prevalent and incident dementia in a general ...
U. Mutlu   +10 more
semanticscholar   +1 more source

Extraction of depth moments by exploiting the partial coherence of radiation [PDF]

open access: yes, 2015
We retrieve depth information (moments) of an object using partially coherent fields and defocus induced holographic contrast. Our analysis leads to a form of tomography that does not require sample or source rotation. The tomography method presented here is performed with only two in-line images.
arxiv   +1 more source

Optical coherence tomography and Doppler optical coherence tomography in the gastrointestinal tract

open access: yesWorld Journal of Gastroenterology, 2011
Optical coherence tomography (OCT) is a noninvasive, high-resolution, high-potential imaging method that has recently been introduced into medical investigations. A growing number of studies have used this technique in the field of gastroenterology in order to assist classical analyses. Lately, 3D-imaging and Doppler capabilities have been developed in
Adrian Saftoiu   +4 more
openaire   +3 more sources

Thermo-elastic optical coherence tomography [PDF]

open access: yesOptical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXIII, 2017
Copy of Journal paper Manuscript.
Wang, Tianshi (author)   +8 more
openaire   +9 more sources

Advances in optical coherence tomography in dermatology—a review

open access: yesJournal of Biomedical Optics, 2018
. Optical coherence tomography (OCT) was introduced as an imaging system, but like ultrasonography, other measures, such as blood perfusion and polarization of light, have enabled the technology to approach clinical utility. This review aims at providing
Jonas Olsen, J. Holmes, G. Jemec
semanticscholar   +1 more source

Optical Coherence Tomography Angiography in Glaucoma

open access: yesTurkish journal of ophthalmology, 2018
Optical coherence tomography angiography (OCTA) comprises different OCT-based technologies developed for non-invasive assessment and measurement of optic nerve head and retinal perfusion. Currently the most clinically established approach is based on the
G. Holló
semanticscholar   +1 more source

Blind dispersion compensation for optical coherence tomography [PDF]

open access: yesarXiv, 2004
We propose a numerical method for compensating dispersion effects in optical coherence tomography that does not require a priori knowledge of dispersive properties of the sample. The method is based on the generalized autoconvolution function, and its principle of operation can be intuitively visualized using the Wigner distribution function formalism.
arxiv  

Complete Two-dimensional Muellermetric Imaging of Biological Tissue Using Heterodyned Optical Coherence Tomography [PDF]

open access: yesarXiv, 2010
A polarization-sensitive optical coherence tomography system based on heterodyning and filtering techniques is built to perform Stokesmetric imaging of different layers of depths in a porcine tendon sample. The complete 4\times4 backscattering Muellermetric images of one layer are acquired using such a system.
arxiv  

Optical coherence tomography in coronary atherosclerosis assessment and intervention

open access: yesNature Reviews Cardiology, 2022
M. Araki   +113 more
semanticscholar   +1 more source

Instantaneous quadrature low-coherence interferometry with 3x3 fiber-optic couplers [PDF]

open access: yes, 2003
We describe fiber-based quadrature low-coherence interferometers that exploit the inherent phase shifts of 3 x 3 and higher-order fiber-optic couplers. We present a framework based on conservation of energy to account for the interferometric shifts in 3 ...
Choma, Michael A.   +2 more
core  

Home - About - Disclaimer - Privacy