1. Nicolaus Copernicus University

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    1. Mentioned In 188 Articles

    2. Whole anterior segment and retinal swept source OCT for comprehensive ocular screening

      Explore OSA | OSA Publishing Ophthalmology
      Whole anterior segment and retinal swept source OCT for comprehensive ocular screening
      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

    3. Non-invasive Survey of Rubens’ Ceiling Paintings at the Banqueting House Whitehall, London, by Means of Optical Coherence Tomography

      Explore Taylor & Francis Online Art
      Non-invasive Survey of Rubens’ Ceiling Paintings at the Banqueting House Whitehall, London, by Means of Optical Coherence Tomography
      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

    4. Fourier domain quantum optical coherence tomography

      Explore OSA | OSA Publishing
      Fourier domain quantum optical coherence tomography
      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

    5. In vivo SS-OCT imaging of crystalline lens sutures

      Explore OSA | OSA Publishing Ophthalmology
      In vivo SS-OCT imaging of crystalline lens sutures
      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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      Mentions: Nicolaus Copernicus University

    6. Correlation of retinal sensitivity in microperimetry with vascular density in optical coherence tomography angiography in primary open-angle glaucoma

      Explore Journals | PLOS Ophthalmology
      Correlation of retinal sensitivity in microperimetry with vascular density in optical coherence tomography angiography in primary open-angle glaucoma
      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

    7. Quantum Optical Coherence Tomography using two photon joint spectrum detection (JS-Q-OCT)

      Explore arxiv.org
      Quantum Optical Coherence Tomography using two photon joint spectrum detection (JS-Q-OCT)
      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

    8. Spectral and time domain optical coherence spectroscopy

      Explore ScienceDirect
      Spectral and time domain optical coherence spectroscopy
      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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      Mentions: Nicolaus Copernicus University

    10. Quantum-inspired detection for Spectral Domain Optical Coherence Tomography

      Explore arxiv.org
      Quantum-inspired detection for Spectral Domain Optical Coherence Tomography
      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

    11. Blood flow rate estimation in optic disc capillaries and vessels using Doppler optical coherence tomography with 3D fast phase unwrapping

      Explore OSA | OSA Publishing Ophthalmology
      Blood flow rate estimation in optic disc capillaries and vessels using Doppler optical coherence tomography with 3D fast phase unwrapping
      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

    12. In vivo brain imaging with multimodal optical coherence microscopy in a mouse model of thromboembolic photochemical stroke

      Explore SPIE Digital Library Neurology
      In vivo brain imaging with multimodal optical coherence microscopy in a mouse model of thromboembolic photochemical stroke
      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

    14. Comparison of Retinal Microvasculature in Patients With Alzheimer's Disease and Primary Open-Angle Glaucoma by Optical Coherence Tomography Angiography

      Explore IOVS Journal Neurology , Ophthalmology
      Comparison of Retinal Microvasculature in Patients With Alzheimer's Disease and Primary Open-Angle Glaucoma by Optical Coherence Tomography Angiography
      Purpose : Comparison of retinal microvasculature within the macula and the optic nerve head in the eyes of patients with Alzheimer's disease (AD), primary open-angle glaucoma (POAG), and in a healthy control (HC) group, using optical coherence tomography angiography (OCTA). Methods : In this cross-sectional study, 27 patients with AD, 27 with POAG, and 27 healthy controls were enrolled. The Mini-Mental State Examination test was used to assess cognitive function. Ophthalmic ...
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      Mentions: Nicolaus Copernicus University

    15. Development of optical coherence tomography methods for imaging and analysis of the structure and function of the choroid in the human eye.

      Explore lab.fizyka.umk.pl Ophthalmology , Jobs & Studentships
      Development of optical coherence tomography methods for imaging and analysis of the structure and function of the choroid in the human eye.
      POSITION 1 Post-doctoral fellow position PROJECT Development of optical coherence tomography methods for imaging and analysis of the structure and function of the choroid in the human eye. Brief description of the project: http://lab.fizyka.umk.pl/670-2/ FUNDING ORGANIZATION, PROGRAMME AND PROJECT NUMBER National Science Center of Poland, OPUS 16, 2018/31/B/ST7/03138; FELLOWSHIP DURATION Maximum: 33 months (October 1st, 2019 June 12th, 2022) Minimum: 12 ...
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      Mentions: Nicolaus Copernicus University

    16. Laser cleaning of paintings: in situ optimization of operative parameters through non-invasive assessment by optical coherence tomography (OCT), reflection FT-IR spectroscopy and laser induced fluorescence spectroscopy (LIF)

      Explore Heritage Science Art , NDE/NDT
      Laser cleaning of paintings: in situ optimization of operative parameters through non-invasive assessment by optical coherence tomography (OCT), reflection FT-IR spectroscopy and laser induced fluorescence spectroscopy (LIF)
      Nowadays the use of laser technology as a highly precise tool for the cleaning of paintings is gaining ground. The development of a non-invasive analytical protocol aimed at thorough assessment of the treated surfaces and real time monitoring of the laser cleaning action is thus becoming imperative. This ensures that no side effects (e.g. discoloration, darkening, blackening) will occur on the painting surfaces due to laser ablation. In the ...
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      Mentions: Nicolaus Copernicus University
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  4. About Nicolaus Copernicus University

    Nicolaus Copernicus University

    Nicolaus Copernicus University (NCU) founded in Torun in 1945 is one of the biggest academic institutions in Poland with the total number of 14 divisions, 54 faculties and 40.000 students. The Medical Physics Group is part of the Institute of Physics of the Nicolaus Copernicus University.  Department of Biophysics and Medical Physics at the Nicolaus Copernicus University.  The department members use both experimental (optics and optical spectroscopy) and theoretical (quantum chemistry and molecular dynamics) methods to investigate the structure and dynamic of biologically relevant molecules and tissues.  Nicolaus Copernicus University Collegium Medicum is the Medical College of NCU.

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