Results 11 to 20 of about 124,933 (256)

Malignant hypertension – Optical coherence tomography grading and optical coherence tomography characteristics

open access: yesTNOA Journal of Ophthalmic Science and Research, 2021
This photo essay describes the fundoscopic and optical coherence tomography (OCT) grading and characteristics of hypertensive retinopathy (HTR). A 34-year-old male presented with decreased vision of 20/40 N10 in both eyes following diagnosis of malignant
Priya Rasipuram Chandrasekaran
doaj   +1 more source

Advances in swept-source optical coherence tomography and optical coherence tomography angiography

open access: yesAdvances in Ophthalmology Practice and Research, 2023
Background: The fast development of swept-source optical coherence tomography (SS-OCT) and swept-source optical coherence tomography angiography (SS-OCTA) enables both anterior and posterior imaging of the eye.
Fang Zheng   +8 more
doaj   +1 more source

Optical Coherence Tomography and Optical Coherence Tomography Angiography in Pediatric Retinal Diseases

open access: yesDiagnostics, 2023
Indirect ophthalmoscopy and handheld retinal imaging are the most common and traditional modalities for the evaluation and documentation of the pediatric fundus, especially for pre-verbal children.
Chung-Ting Wang   +6 more
doaj   +1 more source

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

open access: yesTherapeutic 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   +3 more
doaj   +1 more source

Cross-Polarization Optical Coherence Tomography for Brain Tumor Imaging

open access: yesFrontiers 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   +11 more
doaj   +1 more source

Swept-source optical coherence tomography and optical coherence tomography angiography in acquired toxoplasmic chorioretinitis: a case report

open access: yesJournal of Medical Case Reports, 2018
Purpose To describe swept-source optical coherence tomography and optical coherence tomography angiography retinal changes in a case of acute toxoplasmic chorioretinitis both at the time of diagnosis and after healing.
Diego Vezzola   +6 more
doaj   +1 more source

Optical coherence tomography in pediatric patients: a clinical review

open access: yesTherapeutic Advances in Ophthalmology, 2020
Optical coherence tomography has improved the ophthalmic clinical examination due to its ability to more accurately characterize pathology of the eye. Optical coherence tomography is now an integral imaging modality for many adult diseases of the retina ...
Bradley S. Gundlach, Irena Tsui
doaj   +1 more source

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

open access: yesРоссийский 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   +2 more
doaj   +1 more source

Optical Coherence Tomography [PDF]

open access: yesScience, 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   +10 more
openaire   +2 more sources

Optical coherence angiography

open access: yesOptics Express, 2006
Noninvasive angiography is demonstrated for the in vivo human eye. Three-dimensional flow imaging has been performed with high-speed spectral-domain optical coherence tomography. Sample motion is compensated by two algorithms. Axial motion between adjacent A-lines within one OCT image is compensated by the Doppler shift due to bulk sample motion. Axial
Shuichi, Makita   +4 more
openaire   +2 more sources

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