Results 21 to 30 of about 381,977 (388)

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

Toward optical coherence tomography on a chip: in vivo three-dimensional human retinal imaging using photonic integrated circuit-based arrayed waveguide gratings

Light: Science & Applications, 2021
In this work, we present a significant step toward in vivo ophthalmic optical coherence tomography and angiography on a photonic integrated chip. The diffraction gratings used in spectral-domain optical coherence tomography can be replaced by photonic ...
E. Rank, Ryan Sentosa, Danielle J. Harper, M. Salas, Anna Gaugutz, D. Seyringer, S. Nevlacsil, A. Maese-Novo, M. Eggeling, P. Muellner, R. Hainberger, M. Sagmeister, J. Kraft, R. Leitgeb, W. Drexler   +14 more
semanticscholar   +1 more source

Evaluation of a cheap ultrasonic stage for light source coherence function measurement, optical coherence tomography and dynamic focusing [PDF]

, 2009
We evaluate the performance of a cheap ultrasonic stage in setups related to optical coherence tomography. The stage was used in several configurations: (1) optical delay line in an optical coherence tomography (OCT) setup; (2) as a delay line measuring ...
Andersen, Peter E., Bouma, Brett E., Childs, David, Hogg, Richard, Krstajic, Nikola, Matcher, Stephen J., Smallwood, Rod, Steenbergen, Wiendelt   +7 more
core   +9 more sources

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, Thomas J. Flotte, Warren Chang, Kenton W. Gregory, Eric A. Swanson, William G. Stinson, Charles P. Lin, Carmen A. Puliafito, Joel S. Schuman, Michael R. Hee, James G. Fujimoto   +10 more
openaire   +3 more sources

ReLayNet: Retinal Layer and Fluid Segmentation of Macular Optical Coherence Tomography using Fully Convolutional Network [PDF]

Biomedical Optics Express, 2017
Optical coherence tomography (OCT) is used for non-invasive diagnosis of diabetic macular edema assessing the retinal layers. In this paper, we propose a new fully convolutional deep architecture, termed ReLayNet, for end-to-end segmentation of retinal ...
Abhijit Guha Roy, Sailesh Conjeti, S. Karri, Debdoot Sheet, A. Katouzian, C. Wachinger, Nassir Navab   +6 more
semanticscholar   +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

Stepwise segmentation error correction in optical coherence tomography angiography images of patients with diabetic macular edema

Therapeutic Advances in Ophthalmology, 2020
Aim: To determine the minimum number of optical coherence tomography B-scan corrections required to provide acceptable vessel density measurements on optical coherence tomography angiography images in eyes with diabetic macular edema.
Khalil Ghasemi Falavarjani, Reza Mirshahi, Shahriar Ghasemizadeh, Mahsa Sardarinia   +3 more
doaj   +1 more source

Choroidal Vascularity Index: An In-Depth Analysis of This Novel Optical Coherence Tomography Parameter

Journal of Clinical Medicine, 2020
Remarkable improvements in optical coherence tomography (OCT) technology have resulted in highly sophisticated, noninvasive machines allowing detailed and advanced morphological evaluation of all retinal and choroidal layers. Postproduction semiautomated
Claudio Iovino, M. Pellegrini, F. Bernabei, E. Borrelli, R. Sacconi, Andrea Govetto, A. Vagge, A. Di Zazzo, Matteo Forlini, Lucia Finocchio, A. Carnevali, Giacinto Triolo, G. Giannaccare   +12 more
semanticscholar   +1 more source

Artifacts in Optical Coherence Tomography Angiography

Journal of Ophthalmic & Vision Research, 2021
We performed a comprehensive search of the published literature in PubMed and Google Scholar to identify types, prevalence, etiology, clinical impact, and current methods for correction of various artifacts in optical coherence tomography angiography ...
Pasha Anvari, Maryam Ashrafkhorasani, Abbas Habibi, K. Falavarjani   +3 more
semanticscholar   +1 more source

Polarization-resolved second-harmonic-generation optical coherence tomography in collagen [PDF]

, 2004
We describe a novel imaging technique, second-harmonic-generation optical coherence tomography (SHOCT). This technique combines the spatial resolution and depth penetration of optical coherence tomography (OCT) with the molecular sensitivity of second ...
Applegate, Brian E., Izatt, Joseph A., Rollins, Andrew M., Yang, Changhuei   +3 more
core   +1 more source