Results 1 to 10 of about 360,016 (92)

Dynamic full-field optical coherence tomography: 3D live-imaging of retinal organoids [PDF]

Light: Science & Applications, 2019
Optical coherence tomography offers astounding opportunities to image the complex structure of living tissue but lacks functional information. We present dynamic full-field optical coherence tomography as a technique to noninvasively image living human ...
J. Scholler, Kassandra Groux, O. Goureau, J. Sahel, M. Fink, Sacha Reichman, C. Boccara, K. Grieve   +7 more
semanticscholar   +2 more sources

Real-time high-resolution mid-infrared optical coherence tomography [PDF]

Light: Science & Applications volume 8, Article number: 11 (2019), 2018
The potential for improving the penetration depth of optical coherence tomography systems by using light sources with longer wavelengths has been known since the inception of the technique in the early 1990s. Nevertheless, the development of mid-infrared
N. Israelsen, C. Petersen, A. Barh, D. Jain, Mikkel Jensen, G. Hannesschläger, P. Tidemand‐Lichtenberg, C. Pedersen, A. Podoleanu, O. Bang   +9 more
semanticscholar   +2 more sources

Optical Coherence Tomography and Glaucoma.

Annual Review of Vision Science, 2021
Early detection and monitoring are critical to the diagnosis and management of glaucoma, a progressive optic neuropathy that causes irreversible blindness.
A. Geevarghese, G. Wollstein, H. Ishikawa, J. Schuman   +3 more
semanticscholar   +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

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

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

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

Retinal vascular layers imaged by fluorescein angiography and optical coherence tomography angiography.

JAMA ophthalmology, 2015
IMPORTANCE The retinal vasculature is involved in many ocular diseases that cause visual loss. Although fluorescein angiography is the criterion standard for evaluating the retina vasculature, it has risks of adverse effects and known defects in imaging ...
R. Spaide, J. Klancnik, M. Cooney
semanticscholar   +1 more source

Resolution-enhanced OCT and expanded framework of information capacity and resolution in coherent imaging [PDF]

Sci Rep 11, 20541 (2021), 2021
Spatial resolution in optical microscopy has traditionally been treated as a fixed parameter of the optical system. Here, we present an approach to enhance transverse resolution in beam-scanned optical coherence tomography (OCT) beyond its aberration-free resolution limit, without any modification to the optical system.
arxiv   +1 more source

Detailed Vascular Anatomy of the Human Retina by Projection-Resolved Optical Coherence Tomography Angiography

Scientific Reports, 2017
Optical coherence tomography angiography (OCTA) is a noninvasive method of 3D imaging of the retinal and choroidal circulations. However, vascular depth discrimination is limited by superficial vessels projecting flow signal artifact onto deeper layers ...
J. P. Campbell, Miao Zhang, T. Hwang, Steven T. Bailey, David J. Wilson, Yali Jia, David Huang   +6 more
semanticscholar   +1 more source