Articles that mention Nicolaus Copernicus University -Optical Coherence Tomography News

Nicolaus Copernicus University

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1. Mentioned In 191 Articles
2. Munch and optical coherence tomography: unravelling historical and artist applied varnish layers in painting collections
  
  Explore Home - Springer Sep 6 2021 Art
  
  Effective care of large-scale museum collections requires planning that includes the conservation treatment of specific groups of art works, such as appropriate cleaning strategies. Optical coherence tomography (OCT) has been successfully applied as a non-invasive method for the stratigraphic visualisation of the uppermost transparent and semi-transparent layers in paintings, such as varnishes. Several OCT case study examples have further demonstrated the capabilities of the non-contact interferometric technique to measure the ...
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  Mentions: Nicolaus Copernicus University
3. Spatio-Temporal Optical Coherence Tomography provides advanced imaging of the human retina and choroid
  
  Explore arxiv.org Jul 28 2021 Ophthalmology
  
  One of the greatest needs in modern ophthalmology is access to the eyes choroid in vivo. Without it, it is difficult to introduce new therapies and to understand most of the pathological changes in the eye, because 85% of the total blood flow in the eye i s caused by the choroidal circulation. It is entirely responsible for the metabolism of photoreceptors, which each of us feels every day and ...
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  Mentions: Nicolaus Copernicus University
4. Volumetric Optical Imaging and Quantitative Analysis of Age-Related Changes in Anterior Human Vitreous
  
  Explore IOVS Journal May 15 2021 Ophthalmology
  
  Purpose : The purpose of this study was to characterize age-related changes in anterior human vitreous with 3-D swept source optical coherence tomography (SS-OCT) and evaluate associations with axial length (AL) and contrast sensitivity function (CSF). Methods : There were 49 phakic eyes in 49 patients (40.0 19.3 years) had 3-D volumetric scanning of the lens and retrolental vitreous with SS-OCT at 1050 nm. OCT-derived indices of vitreous optical density ...
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5. Whole anterior segment and retinal swept source OCT for comprehensive ocular screening
  
  Explore OSA | OSA Publishing Apr 3 2021 Ophthalmology
  
  Whole eye visualization and morphometry are of high relevance in clinical practice. However, most standard ophthalmic OCT instruments are dedicated either to retinal or to anterior segment imaging. We demonstrate a swept source optical coherence tomography system (SS-OCT) that images both the whole anterior segment and the retina alternately using a single source and detector. A pilot population was imaged with the proof of concept prototype. We demonstrate the clinical ...
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  Mentions: Nicolaus Copernicus University
6. Non-invasive Survey of Rubens’ Ceiling Paintings at the Banqueting House Whitehall, London, by Means of Optical Coherence Tomography
  
  Explore Taylor & Francis Online Oct 13 2020 Art
  
  This article presents the results of the examination by means of optical coherence tomography (OCT) of two of the nine monumental ceiling paintings by Peter Paul Rubens and his studio, still located in their original location at the Banqueting House, the only surviving building of the former Whitehall Palace in London. OCT is a non-invasive technique of structural imaging of layers semi-permeable to infrared light. The aim of the 2018 ...
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  Mentions: Nicolaus Copernicus University
7. Fourier domain quantum optical coherence tomography
  
  Explore OSA | OSA Publishing Sep 28 2020
  
  Quantum optical coherence tomography (Q-OCT) is the non-classical counterpart of optical coherence tomography (OCT), a high-resolution 3D imaging technique based on white-light interferometry. Because Q-OCT uses a source of frequency-entangled photon pairs, not only is the axial resolution not affected by dispersion mismatch in the interferometer but is also inherently improved by a factor of two. Unfortunately, practical applications of Q-OCT are hindered by image-scrambling artefacts and slow acquisition times ...
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  Mentions: Nicolaus Copernicus University University of Auckland
8. In vivo SS-OCT imaging of crystalline lens sutures
  
  Explore OSA | OSA Publishing Sep 7 2020 Ophthalmology
  
  We demonstrate in vivo three-dimensional (3-D) visualization of crystalline lens sutures in healthy eyes using swept source optical coherence tomography (SS-OCT). Volumetric data sets of the crystalline lenses were acquired and processed to obtain enhanced contrast projection images and to extract suture patterns in both anterior and posterior lens. The results presented different types of the sutures including Y-sutures, simple and complex star sutures. Age-related changes in suture arrangement were ...
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9. Correlation of retinal sensitivity in microperimetry with vascular density in optical coherence tomography angiography in primary open-angle glaucoma
  
  Explore Journals | PLOS Jul 6 2020 Ophthalmology
  
  Purpose To evaluate the correlation between retinal sensitivity in microperimetry (MP) with vessel density (VD) using optical coherence tomography angiography (OCTA) in primary open-angle glaucoma (POAG). Methods We enrolled 30 participants (52 eyes) with POAG and 15 participants (23 eyes) in the healthy control group. All participants were examined for retinal structure using OCTA to assess VD and Spectral domain OCT (SD-OCT) to assess ganglion cell complex (GCC) and peripapillary ...
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  Mentions: Optovue Heidelberg Engineering Nicolaus Copernicus University
10. Quantum Optical Coherence Tomography using two photon joint spectrum detection (JS-Q-OCT)
  
  Explore arxiv.org Jun 3 2020
  
  Quantum Optical Coherence Tomography (Q-OCT) is the non-classical counterpart of Optical Coherence Tomography (OCT) - a high-resolution 3D imaging technique based on white-light interferometry. Because Q-OCT uses a source of frequency-entangled photon pairs, not only is the axial resolution not affected by dispersion mismatch in the interferometer, but is also inherently improved by a factor of square root of two. Unfortunately, practical applications of QOCT are hindered by image-scrambling artefacts and ...
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  Mentions: Nicolaus Copernicus University University of Auckland
11. Spectral and time domain optical coherence spectroscopy
  
  Explore ScienceDirect May 5 2020
  
  We propose a novel method for spectroscopic optical coherence tomography (OCT). This method uses the dependence of the Doppler frequency spectrum on the wavenumber. Controlled modulation of the light in the spectral OCT interferometer allows for an instantaneous depth-resolved reconstruction of the backscattered light spectrum from all depths. The feasibility of the spectroscopic analysis using the proposed scheme was confirmed experimentally.
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12. Evaluation of the optical performance for aspheric intraocular lenses in relation with tilt and decenter errors
  
  Explore Journals | PLOS May 4 2020 Ophthalmology
  
  ...r errors. PLoS ONE 15(5): e0232546. https://doi.org/10.1371/journal.pone.0232546 Editor: Ireneusz Grulkowski, Nicolaus Copernicus University, POLAND Received: December 27, 2019; Accepted: April 16, 2020; Published: May 4...
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  Mentions: Nicolaus Copernicus University Siemens
13. Quantum-inspired detection for Spectral Domain Optical Coherence Tomography
  
  Explore arxiv.org Apr 4 2020
  
  The intensity levels allowed by safety standards (ANSI or ICNIRP) limit the amount of light that can be used in a clinical setting to image highly scattering or absorptive tissues with Optical Coherence Tomography (OCT). To achieve high-sensitivity imaging at low intensity levels, we adapt a detection scheme - which is used in quantum optics for providing information about spectral correlations of photons - into a standard spectral domain OCT system. This ...
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  Mentions: Nicolaus Copernicus University University of Auckland
14. Blood flow rate estimation in optic disc capillaries and vessels using Doppler optical coherence tomography with 3D fast phase unwrapping
  
  Explore OSA | OSA Publishing Feb 16 2020 Ophthalmology
  
  The retinal volumetric flow rate contains useful information not only for ophthalmo-logy but also for the diagnosis of common civilization diseases such as diabetes, Alzheimer's disease, or cerebrovascular diseases. Non-invasive optical methods for quantitative flow assessment, such as Doppler optical coherence tomography (OCT), have certain limitations. One is the phase wrapping that makes simultaneous calculations of the flow in all human retinal vessels impossible due to a very large ...
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  Mentions: Nicolaus Copernicus University Erasmus University
15. In vivo brain imaging with multimodal optical coherence microscopy in a mouse model of thromboembolic photochemical stroke
  
  Explore SPIE Digital Library Jan 28 2020 Neurology
  
  We used a new multimodal imaging system that combines optical coherence microscopy and brightfield microscopy. Using this in vivo brain monitoring approach and cranial window implantation, we three-dimensionally visualized the vascular network during thrombosis, with high temporal (18 s) and spatial (axial, 2.5m; lateral, 2.2m) resolution. We used a modified mouse model of photochemical thromboembolic stroke in order to more accurately parallel human stroke. Specifically, we applied green ...
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  Mentions: Nicolaus Copernicus University
16. Correlation analysis of physical fitness and retinal microvasculature by OCT angiography in healthy adults
  
  Explore Journals | PLOS Dec 3 2019 Ophthalmology
  
  ... adults. PLoS ONE 14(12): e0225769. https://doi.org/10.1371/journal.pone.0225769 Editor: Ireneusz Grulkowski, Nicolaus Copernicus University, POLAND Received: April 23, 2019; Accepted: November 12, 2019; Published: Decem...
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  Mentions: National Institutes of Health Optovue Heidelberg Engineering
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