1. Articles mentioning both Karol Karnowski and Nicolaus Copernicus University

    1-23 of 23
    1. Assessment of the influence of viscoelasticity of cornea in animal ex vivo model using air‐puff optical coherence tomography and corneal hysteresis

      Assessment of the influence of viscoelasticity of cornea in animal ex vivo model using air‐puff optical coherence tomography and corneal hysteresis
      Application of the air‐puff swept source OCT (SS‐OCT) instrument to determine the influence of viscoelasticity on the relation between overall the air‐puff force and corneal apex displacement of porcine corneas ex vivo is demonstrated. Simultaneous recording of time‐evolution of the tissue displacement and air pulse stimulus allows obtaining valuable information related in part to the mechanical properties of the cornea. A novel approach based on quantitative ...
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    2. Swept source optical coherence tomography and tunable lens technology for comprehensive imaging and biometry of the whole eye

      Swept source optical coherence tomography and tunable lens technology for comprehensive imaging and biometry of the whole eye
      Standard optical systems in ophthalmology are strictly dedicated either to retinal or to anterior segment imaging due to the refractive properties of the eye. We demonstrate a swept source optical coherence tomography platform with an electrically tunable lens (ETL) for versatile 3D in vivo imaging of both the eyes anterior segment and the retina. The optimized optical setup with adaptive operational states of the ETL permits focusing on the retina ...
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    3. Feature Of The Week 10/08/2017: Optical Coherence Microscopy as a Novel, Non-Invasive Method for the 4D Live Imaging of Early Mammalian Embryos

      Feature Of The Week 10/08/2017: Optical Coherence Microscopy as a Novel, Non-Invasive Method for the 4D Live Imaging of Early Mammalian Embryos
      ...d preimplantation embryo diagnostics. For more information see recent Article . Courtesy Karol Karnowski from Nicolaus Copernicus University . Imaging of living cells based on traditional fluorescence and confocal laser ...
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    4. Optical coherence microscopy as a novel, non-invasive method for the 4D live imaging of early mammalian embryos

      Optical coherence microscopy as a novel, non-invasive method for the 4D live imaging of early mammalian embryos
      Imaging of living cells based on traditional fluorescence and confocal laser scanning microscopy has delivered an enormous amount of information critical for understanding biological processes in single cells. However, the requirement for a high numerical aperture and fluorescent markers still limits researchers ability to visualize the cellular architecture without causing short- and long-term photodamage. Optical coherence microscopy (OCM) is a promising alternative that circumvents the technical limitations of fluorescence imaging ...
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    5. Non-contact investigation of the corneal biomechanics with air-puff swept source optical coherence tomography

      Non-contact investigation of the corneal biomechanics with air-puff swept source optical coherence tomography
      In this paper, we use swept source optical coherence tomography combined with air-puff module (air-puff SS-OCT) to investigate the properties of the cornea. During OCT measurement the cornea was stimulated by short, air pulse, and corneal response was recorded. In this preliminary study, the air-puff SS-OCT instrument was applied to measure behavior of the porcine corneas under varied, well-controlled intraocular pressure conditions. Additionally, the biomechanical response of the corneal tissue ...
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    6. Coherence properties of fast frequency swept lasers revealed via full electric field reconstruction

      Coherence properties of fast frequency swept lasers revealed via full electric field reconstruction
      A novel, time-resolved interferometric technique is presented allowing the reconstruction of the complex electric field output of a fast frequency swept laser in a single-shot measurement. The power of the technique is demonstrated by examining a short cavity swept source designed for optical coherence tomography applications, with a spectral bandwidth of 18 THz. This novel analysis of the complete electric field reveals the modal structure and modal evolution of the ...
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    7. Optical Coherence Tomography of the Labial Salivary Glands Reveals Age-Related Differences in Women

      Optical Coherence Tomography of the Labial Salivary Glands Reveals Age-Related Differences in Women
      The labial minor salivary glands (LSGs) play a role in medical research and practice due to their superficial location and involvement in both systemic and localized diseases. Swept-source optical coherence tomography (OCT) is a noninvasive modality that enables in vivo , micrometer resolution, wide-field three-dimensional imaging in seconds. A purpose-built swept-source OCT instrument was employed to acquire three-dimensional datasets covering the area of 2.43 cm 2 of the mucosa of ...
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    8. Feature Of The Week 02/15/15: Optical Coherence Tomography Identifies Lower Labial Salivary Gland Surface Density in Cystic Fibrosis

      Feature Of The Week 02/15/15: Optical Coherence Tomography Identifies Lower Labial Salivary Gland Surface Density in Cystic Fibrosis
      ...ecent Article . Courtesy of Jan Nowak from Poznan University of Medical Sciences and Ireneusz Grulkowski from Nicolaus Copernicus University . Cystic fibrosis (CF) is a genetic disease that affects multiple organs due to...
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    9. Optical Coherence Tomography Identifies Lower Labial Salivary Gland Surface Density in Cystic Fibrosis

      Optical Coherence Tomography Identifies Lower Labial Salivary Gland Surface Density in Cystic Fibrosis
      The labial minor salivary glands (LSGs) are easily accessible mucus-secreting structures of the alimentary tract that may provide new information on the basis of gastrointestinal complications of cystic fibrosis (CF). It was shown that they are destructed in the course of cystic fibrosis. We employed wide-field, micrometer resolution in vivo optical coherence tomography to assess the surface density of LSGs in 18 patients with CF and 18 healthy subjects. The ...
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    10. Feature Of The Week 11/9/14: Dynamics of a Short Cavity Swept Source OCT Laser

      Feature Of The Week 11/9/14: Dynamics of a Short Cavity Swept Source OCT Laser
      Great advances in OCT speed and sensitivity have been possible due to the introduction of fast frequency swept laser sources. One of the most commonly used swept source devices is a short (~5 cm) cavity Fabry-Perot laser. We present both experimental characterisation and numerical modelling of such an OCT swept source and also analyse the underlying physics to better understand how such sources may be optimised. For the experimental characterisation ...
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    11. Quantitative assessment of oral mucosa and labial minor salivary glands in patients with Sjögren’s syndrome using swept source OCT

      Quantitative assessment of oral mucosa and labial minor salivary glands in patients with Sjögren’s syndrome using swept source OCT
      Three-dimensional imaging of the mucosa of the lower lip and labial minor salivary glands is demonstrated in vivo using swept source optical coherence tomography (OCT) system at 1310 nm with modified interface. Volumetric data sets of the inner surface of the lower lip covering ~230 mm 2 field are obtained from patients with Sjgrens syndrome and a control group. OCT enables high-resolution visualization of mucosal architecture using cross-sectional images as ...
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    12. Improved measurement of vibration amplitude in dynamic optical coherence elastography

      Improved measurement of vibration amplitude in dynamic optical coherence elastography
      Optical coherence elastography employs optical coherence tomography (OCT) to measure the displacement of tissues under load and, thus, maps the resulting strain into an image, known as an elastogram. We present a new improved method to measure vibration amplitude in dynamic optical coherence elastography. The tissue vibration amplitude caused by sinusoidal loading is measured from the spread of the Doppler spectrum, which is extracted using joint spectral and time domain ...
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    13. Fourier domain OCT imaging of American cockroach nervous system

      Fourier domain OCT imaging of American cockroach nervous system
      In this pilot study we demonstrate results of structural Fourier domain OCT imaging of the nervous system of Periplaneta americana L. (American cockroach). The purpose of this research is to develop an OCT apparatus enabling structural imaging of insect neural system. Secondary purpose of the presented research is to develop methods of the sample preparation and handling during the OCT imaging experiments. We have performed imaging in the abdominal nerve ...
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    14. Feature Of The Week 11/6/11: Nicolaus Copernicus University Researchers Develop Technique to Study Biomechanical Properties of The Cornea Using OCT

      Feature Of The Week 11/6/11: Nicolaus Copernicus University Researchers Develop Technique to Study Biomechanical Properties of The Cornea Using OCT
      ...ratus are discussed.For more information see recent Article. Courtesy Maciej Wojtkowski.   Researchers from Nicolaus Copernicus University have a long history of development of OCT in general and ophthalmology in parti...
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    15. Assessment of corneal dynamics with high-speed swept source Optical Coherence Tomography combined with an air puff system

      Assessment of corneal dynamics with high-speed swept source Optical Coherence Tomography combined with an air puff system
      ...d biotechnology : Optical coherence tomography ToC Category: Category Pending Citation David Alonso-Caneiro, Karol Karnowski, Bartlomiej J. Kaluzny, Andrzej Kowalczyk, and Maciej Wojtkowski, "Assessment of corneal dynam...
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    16. Imaging of the lens capsule with an ultrahigh-resolution spectral optical coherence tomography prototype based on a femtosecond laser

      ...phthalmology, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland 2. ^2Institute of Physics, Nicolaus Copernicus University, Grudziadzka, Torun, Poland 1. Correspondence to Dr Bartlomiej J Kaluzny, Depar...
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    17. Ultra high-speed swept source OCT imaging of the anterior segment of human eye at 200 kHz with adjustable imaging range

      Ultra high-speed swept source OCT imaging of the anterior segment of human eye at 200 kHz with adjustable imaging range
      ...tics : Lasers, tunable * (170.4470) Medical optics and biotechnology : Ophthalmology Citation Michalina Gora, Karol Karnowski, Maciej Szkulmowski, Bartlomiej J. Kaluzny, Robert Huber, Andrzej Kowalczyk, and Maciej Wojtko...
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    18. 1-23 of 23
  1. Categories

    1. Applications:

      Art, Cardiology, Dentistry, Dermatology, Developmental Biology, Gastroenterology, Gynecology, Microscopy, NDE/NDT, Neurology, Oncology, Ophthalmology, Other Non-Medical, Otolaryngology, Pulmonology, Urology
    2. Business News:

      Acquisition, Clinical Trials, Funding, Other Business News, Partnership, Patents
    3. Technology:

      Broadband Sources, Probes, Tunable Sources
    4. Miscellaneous:

      Jobs & Studentships, Student Theses, Textbooks
  2. Organizations in the News

    1. (2 articles) University College Cork
    2. (2 articles) Ludwig Maximilian University of Munich
    3. (2 articles) University of Western Australia
    4. (1 articles) Columbia University
    5. (1 articles) University of Rochester
  3. People in the News

    1. (21 articles) Maciej Wojtkowski
    2. (11 articles) Ireneusz Grulkowski
    3. (7 articles) Bartlomiej J. Kaluzny
    4. (6 articles) Andrzej A. Kowalczyk
    5. (6 articles) Maciej Szkulmowski
    6. (5 articles) Jan K. Nowak
    7. (4 articles) Michalina J. Góra
    8. (3 articles) Bryan Kelleher
    9. (2 articles) Robert A. Huber
    10. (2 articles) David Alonso-Caneiro
    11. (1 articles) Iwona Gorczynska
    12. (1 articles) David D. Sampson