1. Nicolaus Copernicus University

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    1. Mentioned In 187 Articles

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

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      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 Piotr Targowski Marcin Sylwestrzak

    3. 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 Frederique Vanholsbeeck

    4. 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 Ireneusz Grulkowski

    5. 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

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

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      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 Frederique Vanholsbeeck

    7. Spectral and time domain optical coherence spectroscopy

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      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 Maciej Szkulmowski

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

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      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 Frederique Vanholsbeeck

    10. 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 Maciej Szkulmowski Iwona Gorczynska

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

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      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: Maciej Wojtkowski Nicolaus Copernicus University Maciej Szkulmowski

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

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      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

    14. 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

    15. 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 Piotr Targowski Marcin Sylwestrzak

    16. Feature Of The Week 05/26/2019: In vivo volumetric imaging by crosstalk-free full-field OCT

      Explore Optical Coherence Tomography News
      Feature Of The Week 05/26/2019: In vivo volumetric imaging by crosstalk-free full-field OCT
      Cellular resolution imaging of biological structures has always been a challenge due to strong scattering that limits the achievable transverse resolution or imaging penetration depth. Recently, a major advancement toward high-resolution and volumetric imaging was achieved by implementing a parallel detection (i.e., full field) into Fourier-domain optical coherence tomography. The drawback of using parallel detection is that scattered light can travel laterally and get mapped improperly at a camera ...
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      Mentions: Maciej Wojtkowski Nicolaus Copernicus University Egidijus Auksorius
    17. 1-15 of 187 1 2 3 4 ... 11 12 13 »
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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.

  5. Related Topics

    1. Photoreceptor Disruption Secondary to Posterior Vitreous Detachment as Visualized Using High-Speed Ultrahigh-Resolution Optical Coherence Tomography
      105 articles also mentioned Maciej Wojtkowski
    2. Spectral Optical Coherence Tomography in Video-Rate and 3D Imaging of Contact Lens Wear
      58 articles also mentioned Maciej Szkulmowski
    3. Optical Coherence Tomography for Non-Destructive Investigations of Structure of Objects of Art
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    6. Projection OCT fundus imaging for visualizing outer retinal pathology in non-exudative age related macular degeneration
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