Articles that mention Maciej Szkulmowski -Optical Coherence Tomography News

Maciej Szkulmowski

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1. Mentioned In 62 Articles
2. Computationally effective 2D and 3D fast phase unwrapping algorithms and their applications to Doppler optical coherence tomography
  
  Explore OSA | OSA Publishing Feb 20 2019
  
  We propose a simplification for a robust and easy to implement fast phase unwrapping (FPU) algorithm that is used to solve the phase wrapping problem encountered in various fields of optical imaging and metrology. We show that the number of necessary computations using the algorithm can be reduced compared to its original version. FPU can be easily extended from two to three spatial dimensions. We demonstrate the applicability of the ...
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  Mentions: Nicolaus Copernicus University Maciej Szkulmowski Iwona Gorczynska
3. Retina Tomography and Optical Coherence Tomography in Eye Diagnostic System
  
  Explore Home - Springer May 11 2018 Ophthalmology
  
  Eye diagnostic, two-step method based on retina color image and Optical Coherence Tomography is presented in this paper. A new robust algorithm, by which various eye diseases can be diagnosed, was implemented as an essential part of the work. The approach comprises two steps. The first one deals with the analysis of retina color image. In this stage, an algorithm was implemented to especially search hard exudates. If the algorithm ...
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  Mentions: Nicolaus Copernicus University Maciej Szkulmowski
4. 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
  
  Explore Optical Coherence Tomography News Oct 8 2017 Developmental Biology
  
  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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  Mentions: Maciej Wojtkowski Nicolaus Copernicus University Maciej Szkulmowski
5. Optical coherence microscopy as a novel, non-invasive method for the 4D live imaging of early mammalian embryos
  
  Explore Nature Publishing Group Jun 29 2017 Developmental Biology , Microscopy
  
  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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  Mentions: Maciej Wojtkowski Nicolaus Copernicus University Maciej Szkulmowski
6. Spectrometer calibration for spectroscopic Fourier domain optical coherence tomography
  
  Explore OSA | OSA Publishing Nov 15 2016
  
  We propose a simple and robust procedure for Fourier domain optical coherence tomography (FdOCT) that allows to linearize the detected FdOCT spectra to wavenumber domain and, at the same time, to determine the wavelength of light for each point of detected spectrum. We show that in this approach it is possible to use any measurable physical quantity that has linear dependency on wavenumber and can be extracted from spectral fringes ...
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  Mentions: Maciej Wojtkowski Nicolaus Copernicus University Maciej Szkulmowski
7. Extended-focus optical coherence microscopy for high-resolution imaging of the murine brain
  
  Explore OSA | OSA Publishing Oct 13 2016 Developmental Biology , Neurology
  
  We propose a new method and optical instrumentation for mouse brain imaging based on extended-focus optical coherence microscopy. This in vivo imaging technique allows the evaluation of the cytoarchitecture at cellular level and the circulation system dynamics in three dimensions. This minimally invasive and non-contact approach is performed without the application of contrasting agents. The optical design achieved a resolution of 2.2 m over a distance of 800 m ...
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  Mentions: Maciej Wojtkowski Nicolaus Copernicus University Ecole Polytechnique Fédérale de Lausanne
8. Method and apparatus for imaging of semi-transparent matter
  
  Explore uspto.gov May 24 2016 Ophthalmology , Patents
  
  The invention relates to a method and apparatus for measuring the spatial and velocity distribution of scattering structures of a sample in semi-transparent matter. The acquired spectral data I(k, t) are transformed in two steps to image data I(z, v). A Doppler shift is imposed on the light to a separate real and mirror images in the v space to suppress the complex ambiguity artifact.
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  Mentions: Maciej Wojtkowski Tomasz Bajraszewski Maciej Szkulmowski
9. Image capturing apparatus, image capturing method, and storage medium
  
  Explore uspto.gov Apr 12 2016 Patents
  
  An image capturing apparatus includes a dividing unit configured to divide light from a light source into reference light and measurement light; a first dichroic mirror arranged in a measurement optical path for guiding the measurement light to an object to be examined; a second dichroic mirror arranged in a reference optical path for guiding the reference light to a reference object; and a light receiving unit configured to receive ...
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  Mentions: Tomasz Bajraszewski Maciej Szkulmowski Canon Medical Systems
10. Imaging of the stroke-related changes in the vascular system of the mouse brain with the use of extended focus Optical Coherence Microscopy
  
  Explore Conference Proceedings Mar 13 2016 Developmental Biology , Microscopy
  
  We used Optical Coherence Microscopy (OCM) to monitor structural and functional changes due to ischemic stroke in small animals brains in vivo. To obtain lateral resolution of 2.2 m over the range of 600 m we used extended focus configuration of OCM instrument involving Bessel beam. It provided access to detailed 3D information about the changes in brain vascular system up to the level of capillaries across I and ...
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  Mentions: Maciej Wojtkowski Nicolaus Copernicus University Ecole Polytechnique Fédérale de Lausanne
11. Spectroscopy by joint spectral and time domain optical coherence tomography
  
  Explore Conference Proceedings Mar 10 2015
  
  ... 2015); doi:10.1117/12.2081968; Spectroscopy by joint spectral and time domain optical coherence tomography Maciej Szkulmowski ; Szymon Tamborski ; Maciej Wojtkowski; Spectroscopy by joint spectral and time domain opti...
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  Mentions: Maciej Wojtkowski Nicolaus Copernicus University Maciej Szkulmowski
12. Wavelength to pixel calibration for FdOCT
  
  Explore Conference Proceedings Mar 8 2015
  
  ... Biomedicine XIX, 93123L (March 2, 2015); doi:10.1117/12.2081952; Wavelength to pixel calibration for FdOCT Maciej Szkulmowski ; Szymon Tamborski ; Maciej Wojtkowski; Wavelength to pixel calibration for FdOCT . Proc. S...
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  Mentions: Joseph A. Izatt James G. Fujimoto Maciej Wojtkowski
13. Spectral optical coherence tomography
  
  Explore uspto.gov Jul 22 2014 Ophthalmology , Patents
  
  The invention relates to an apparatus for generating a scannable optical delay for a beam of light and an apparatus for Fourier domain optical coherence tomography having said apparatus for generating a scannable optical delay in its reference arm (15). The light beam is directed to a pivotably driven mirror (10) from where it is reflected to a fixed mirror (12), and from there back retro reflected along the reference ...
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  Mentions: Maciej Wojtkowski Optopol Technology Tomasz Bajraszewski
14. Multimodal instrument for high-sensitivity autofluorescence and spectral optical coherence tomography of the human eye fundus
  
  Explore opticsinfobase.org Oct 29 2013 Ophthalmology
  
  ...ojtkowski »View Author Affiliations Katarzyna Komar,^1,^2 Patrycjusz Stremplewski,^1,^2 Marta Motoczyńska,^1 Maciej Szkulmowski,^1 and Maciej Wojtkowski^1,^* ^1Institute of Physics, Faculty of Physics, Astronomy and I...
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  Mentions: Maciej Wojtkowski Nicolaus Copernicus University Maciej Szkulmowski
15. Assessment of the flow velocity of blood cells in a microfluidic device using joint spectral and time domain optical coherence tomography
  
  Explore opticsinfobase.org Oct 6 2013
  
  ...and Maciej Wojtkowski »View Author Affiliations Danuta M. Bukowska,^1 Ladislav Derzsi,^2 Szymon Tamborski,^1 Maciej Szkulmowski,^1 Piotr Garstecki,^2 and Maciej Wojtkowski^1,^* ^1Institute of Physics, Faculty of Physi...
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  Mentions: Maciej Wojtkowski Nicolaus Copernicus University Maciej Szkulmowski
16. Quantitative lateral and axial flow imaging with optical coherence microscopy and tomography
  
  Explore opticsinfobase.org Aug 5 2013 Microscopy
  
  Optical coherence tomography (OCT) and optical coherence microscopy (OCM) allow the acquisition of quantitative three-dimensional axial flow by estimating the Doppler shift caused by moving scatterers. Measuring the velocity of red blood cells is currently the principal application of these methods. In many biological tissues, blood flow is often perpendicular to the optical axis, creating the need for a quantitative measurement of lateral flow. Previous work has shown that lateral ...
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  Mentions: Maciej Wojtkowski Nicolaus Copernicus University Ecole Polytechnique Fédérale de Lausanne
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