Results 241 to 250 of about 88,265 (286)

Optical Coherence Tomography Angiography (OCTA) of the eye: A review on basic principles, advantages, disadvantages and device specifications.

Clinical Hemorheology and Microcirculation, 2022
Optical Coherence Tomography Angiography (OCTA) is a relatively new imaging technique in ophthalmology for the visualization of the retinal microcirculation and other tissues of the human eye.
A. Koutsiaris, Vasilios Batis, Georgia Liakopoulou, S. Tachmitzi, E. Detorakis, E. Tsironi   +5 more
semanticscholar   +1 more source

Experts Opinion: OCTA vs. FFA/ICG in Uveitis – Which Will Survive?

Ocular immunology and inflammation, 2022
Will optical coherence tomography angiography (OCTA) replace invasive imaging techniques like fundus fluorescein angiography (FFA) and indocyanine green (ICG) angiography entirely?
A. Invernizzi, E. Carreño, F. Pichi, M. Munk, A. Agarwal, M. Zierhut, C. Pavesio   +6 more
semanticscholar   +1 more source

BSDA-Net: A Boundary Shape and Distance Aware Joint Learning Framework for Segmenting and Classifying OCTA Images

International Conference on Medical Image Computing and Computer-Assisted Intervention, 2021
Optical coherence tomography angiography (OCTA) is a novel non-invasive imaging technique that allows visualizations of vasculature and foveal avascular zone (FAZ) across retinal layers.
Li Lin, Zhonghua Wang, Jiewei Wu, Yijin Huang, Junyan Lyu, Pujin Cheng, Jiong Wu, Xiaoying Tang   +7 more
semanticscholar   +1 more source

Image Projection Network: 3D to 2D Image Segmentation in OCTA Images

IEEE Transactions on Medical Imaging, 2020
We present an image projection network (IPN), which is a novel end-to-end architecture and can achieve 3D-to-2D image segmentation in optical coherence tomography angiography (OCTA) images.
Mingchao Li, Yerui Chen, Zexuan Ji, Keren Xie, Songtao Yuan, Qiang Chen, Shuo Li   +6 more
semanticscholar   +1 more source

OCTA Assessment of the Diabetic Macula: a Comparison Study among Different Algorithms.

Retina, 2021
PURPOSE To assess the impact of histogram adjustments and binarization thresholding selection on quantitative measurements of diabetic macular ischemia using optical coherence tomography angiography (OCTA).
E. Borrelli, R. Sacconi, M. Parravano, E. Costanzo, L. Querques, Marco Battista, D. Grosso, Paola Giorno, F. Bandello, G. Querques   +9 more
semanticscholar   +1 more source

Organotricyclohexa(octa)siloxanes

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1975
We synthesized eight new polyorganotricyclohexa(octa)siloxanes with the cyclotetrasiloxane and cyclotrisiloxane rings in the cis-position relative to the starting cyclotetrasiloxane.
K. A. Andrianov, N. N. Makarova, N. V. Chizhova   +2 more
openaire   +1 more source

OCTA in Glaucoma

2020
Optical coherence tomography angiography (OCTA) is a noninvasive, fast, and cost-effective modality that provides high-resolution 3D imaging of the retinal microvasculature. OCTA uses the variation in optical coherence tomography (OCT) signal caused by moving particles—namely, red blood cells—as the contrast agent for imaging blood flow.
Grace M. Richter, Ruikang K. Wang
openaire   +1 more source

Syntheses of Octa(dialkylamino)azaphthalocyanines

Journal of Porphyrins and Phthalocyanines, 1999
Nickel(II) octa(4-morpholinyl)- (11a) and copper(II) octa(1-pyrrolidinyl)- (11b) azaphthalocyanines have been prepared from the corresponding pyrazine diiminoimides (10). The precursor pyrazine dicarbonitriles (2) gave 6-cyanopyrazine-5-alkyl carboximidates (3-9) as stable intermediates when reacted with ammonia and catalytic amounts of sodium ...
Eva H. Mørkved, Helge Kjøsen, Hege Ossletten, Nikolai Erchak   +3 more
openaire   +1 more source

Macular and Peripapillary OCTA Metrics Predict Progression in Diabetic Retinopathy: A Sub-analysis of TIME-2b Study Data.

American journal of ophthalmology-glaucoma, 2020
PURPOSE To identify optical coherence tomography angiography (OCTA) derived vessel metrics of the macula and optic nerve head (ONH) that predict diabetic retinopathy (DR) disease progression.
Eugenia Custo Greig, M. Brigell, Frank Cao, Emily S. Levine, K. Peters, Eric M. Moult, J. Fujimoto, N. Waheed   +7 more
semanticscholar   +1 more source

Overview of OCTA

2016
OCTA comprises a collection of simulation engines and the graphical user interface tool GOURMET. All the engines use user definable format (UDF) files for input and output, and GOURMET can be used to edit and analyze UDF files. Engines can easily collaborate with each other using UDF files.
Jun-ichi Takimoto, Takeshi Aoyagi
openaire   +1 more source