Results 11 to 20 of about 227,718 (311)

Optical coherence tomography and optical coherence tomography angiography in multiple sclerosis

The Egyptian Journal of Neurology, Psychiatry and Neurosurgery, 2023
Background In multiple sclerosis (MS), optical coherence tomography (OCT) has become a sensitive tool for evaluating retinal and optic nerve diseases. Optical coherence tomography angiography (OCT-A) is a novel technique that can assess the density of ...
Adel Hassanein Elsayed Gad, Nouran Alaa Abd El Hamid, Randa Mohamed Abdel-Moneim El-Mofty, Lobna Ahmed Talaat El Ghoneimy   +3 more
doaj   +1 more source

Optical coherence tomography and optical coherence tomography — angiography used in endocrine ophthalmopathy

Российский офтальмологический журнал, 2023
The literature review presents the results of optical coherence tomography and optical coherence tomography — angiography used for Graves’ orbitopathy. The data on the thickness of the inner layers of the retina, microcirculation in the peripapillary and
N. A. Gavrilova, N. Yu. Kutrovskaya, Kh. N. Salimova   +2 more
doaj   +1 more source

High precision dynamic multi-interface profilometry with optical coherence tomography [PDF]

, 2011
Optical coherence tomography (OCT) has mostly been used for high speed volume imaging but its profilometry potentials have not been fully exploited. This paper demonstrates high precision (as good as ~50nm) multi-interface profilometry using a Fourier ...
Lawman, S, Samuel Lawman, Liang, H, Haida Liang   +3 more
core   +1 more source

Phantoms for performance assessment of optical coherence tomography systems [PDF]

, 2012
In this paper, we describe the procedures to make epoxy resin and agarose phantoms designed using Mie scattering calculations. The phantoms are constructed to be used in the estimation of point spread function (PSF) of an optical coherence tomography ...
S. A. Hojjatoleslami, Corr, S.A., Podoleanu, A.G., Price, M.C., Podoleanu, Adrian Gh., Avanaki, M.R.N., Avanaki, Mohammad R.N., Mazrae Khoshki, R., Mark C. Price, Rohollah Mazraeh Khoshki, Price, Mark C., Adrian G. Podoleanu, Mohammad R. N. Avanaki, Corr, Serena A., Khoshki, Rohollah Mazraeh, Serena A. Corr, Hojjatoleslami, S.A.   +16 more
core   +1 more source

Optical tomography dynamic for time-dependent coherent states generated by an open qubit-cavity system

Results in Physics, 2021
Optical tomography is investigated for time-dependent quantum states, which are generated from coherent even and odd coherent cavity fields interacting with a two-level system (qubit) in the presence of phase damping.
A.-B.A. Mohamed, E.M. Khalil, M.M. Selim, H. Eleuch   +3 more
doaj   +1 more source

Optical Coherence Tomography [PDF]

Science, 1991
A technique called optical coherence tomography (OCT) has been developed for noninvasive cross-sectional imaging in biological systems. OCT uses low-coherence interferometry to produce a two-dimensional image of optical scattering from internal tissue microstructures in a way that is analogous to ultrasonic pulse-echo imaging.
David Huang, Eric A. Swanson, Charles P. Lin, Joel S. Schuman, William G. Stinson, Warren Chang, Michael R. Hee, Thomas Flotte, Kenton Gregory, Carmen A. Puliafito, James G. Fujimoto   +10 more
openaire   +2 more sources

Characterization of optical fiber imaging bundles for swept-source optical coherence tomography [PDF]

, 2011
Fiber imaging bundles have been investigated for use in endoscopic optical coherence tomography (OCT) systems, to obviate the requirement for scanning components within the endoscope probe section.
Helen D. Ford, Ralph P. Tatam, Tatam, Ralph P., Ford, Helen D.   +3 more
core   +1 more source

Cross-Polarization Optical Coherence Tomography for Brain Tumor Imaging

Frontiers in Oncology, 2019
This paper considers valuable visual assessment criteria for distinguishing between tumorous and non-tumorous tissues, intraoperatively, using cross-polarization OCT (CP OCT)—OCT with a functional extension, that enables detection of the polarization ...
Konstantin S. Yashin, Elena B. Kiseleva, Ekaterina V. Gubarkova, Alexander A. Moiseev, Sergey S. Kuznetsov, Pavel A. Shilyagin, Grigory V. Gelikonov, Igor A. Medyanik, Leonid Ya. Kravets, Alexander A. Potapov, Elena V. Zagaynova, Natalia D. Gladkova   +11 more
doaj   +1 more source

Optical coherence tomography for vulnerability assessment of sandstone [PDF]

, 2013
Sandstone is an important cultural heritage material, in both architectural and natural settings, such as neolithic rock art panels. The majority of deterioration effects in porous materials such as sandstone are influenced by the presence and movement ...
Bemand, E, Liang, H
core   +1 more source

Anisotropic Elastography for Local Passive Properties and Active Contractility of Myocardium from Dynamic Heart Imaging Sequence

International Journal of Biomedical Imaging, 2006
Major heart diseases such as ischemia and hypertrophic myocardiopathy are accompanied with significant changes in the passive mechanical properties and active contractility of myocardium.
Yi Liu, Ge Wang, L. Z. Sun
doaj   +1 more source