1. Articles mentioning both Maciej Szkulmowski and Daniel Szlag

    1-18 of 18
    1. Extended-focus optical coherence microscopy for high-resolution imaging of the murine brain

      Extended-focus optical coherence microscopy for high-resolution imaging of the murine brain
      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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    2. Imaging of the stroke-related changes in the vascular system of the mouse brain with the use of extended focus Optical Coherence Microscopy

      Imaging of the stroke-related changes in the vascular system of the mouse brain with the use of extended focus Optical Coherence 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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    3. Quantitative lateral and axial flow imaging with optical coherence microscopy and tomography

      Quantitative lateral and axial flow imaging with optical coherence microscopy and tomography
      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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    4. Feature Of The Week 11/25/12: Nicolaus Copernicus University Presents Work on Four-Dimensional OCT Imaging Using Graphics Processing Units

      Feature Of The Week 11/25/12: Nicolaus Copernicus University Presents Work on Four-Dimensional OCT Imaging Using Graphics Processing Units
      Nicolaus Copernicus University present the application of graphics processing unit (GPU) programming for real-time three-dimensional (3-D) Fourier domain optical coherence tomography (FdOCT) imaging with implementation of flow visualization algorithms. One of the limitations of FdOCT is data processing time, which is generally longer than data acquisition time. Utilizing additional algorithms, such as Doppler analysis, further increases computation time. The general purpose computing on GPU (GPGPU) has been used successfully for ...
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    5. Four-dimensional structural and Doppler optical coherence tomography imaging on graphics processing units

      Four-dimensional structural and Doppler optical coherence tomography imaging on graphics processing units
      The authors present the application of graphics processing unit (GPU) programming for real-time three-dimensional (3-D) Fourier domain optical coherence tomography (FdOCT) imaging with implementation of flow visualization algorithms. One of the limitations of FdOCT is data processing time, which is generally longer than data acquisition time. Utilizing additional algorithms, such as Doppler analysis, further increases computation time. The general purpose computing on GPU (GPGPU) has been used successfully for structural ...
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    6. Optical Coherence Tomography Apparatus And Method With Speckle Suppression

      Optical Coherence Tomography Apparatus And Method With Speckle Suppression
      The invention relates to an optical coherence tomography apparatus and method. It improves speckle suppression by modifying the scanning trajectory (18) of the probing light beam so that groups of A scans close to the imaged segments (22) can be recorded and averaged. The invention facilitates effective speckle suppression combined with high resolution and little dependence of sample motions during the measurement.
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    7. Multi-parametric imaging of murine brain using spectral and time domain optical coherence tomography

      Multi-parametric imaging of murine brain using spectral and time domain optical coherence tomography
      Examination of brain functions in small animal models may help improve the diagnosis and treatment of neurological conditions. Transcranial imaging of small rodents brains poses a major challenge for optical microscopy. Another challenge is to reduce the measurement time. We describe methods and algorithms for three-dimensional assessment of blood flow in the brains of small animals, through the intact skull, using spectral and time domain optical coherence tomography. By introducing ...
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    8. Real-time imaging for Spectral Optical Coherence Tomography with massively parallel data processing

      Real-time imaging for Spectral Optical Coherence Tomography with massively parallel data processing
      In this paper the application of massively parallel processing of Spectral Optical Coherence Tomography (SOCT) data with the aid of a low-cost Graphic Processing Unit (GPU) is presented. The reported system may be used for real-time imaging of high resolution 2D tomograms or for presenting volume data. The overall imaging speed is over 100 frames/second for 2D tomograms built of 1024 A-scans and 9 frames/second for 3D volume ...
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    9. Three-dimensional quantitative imaging
of retinal and choroidal blood flow velocity using joint Spectral and Time domain Optical Coherence Tomography

      Three-dimensional quantitative imaging
of retinal and choroidal blood flow velocity using joint Spectral and Time domain Optical Coherence Tomography
      ... : Optical coherence tomography ToC Category: Category Pending Citation Anna Szkulmowska, Maciej Szkulmowski, Daniel Szlag, Andrzej Kowalczyk, and Maciej Wojtkowski, "Three-dimensional quantitative imaging
 of retinal an...
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    10. Simultaneous complex ambiguity removal and quantitative flow velocity estimation with joint spectral and time domain OCT

      , , et al. We show that recently developed joint Spectral and Time Optical Coherence Tomography data analysis scheme combined with oscillatory change of optical path difference allows for simultaneous complex ambiguity removal and quantitative flow velocity estimation. Full range structural tomograms as well a ... [Proc. SPIE 7168, 71681K (2009)] published Thu Feb 19, 2009.
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    11. Three-dimensional retinal blood flow analysis using joint spectral and time domain optical coherence tomography

      ...rs: Fabrice Manns, Per G. Söderberg, Arthur Ho ABSTRACT REFERENCES (13) Anna Szkulmowska, Maciej Szkulmowski, Daniel Szlag, Danuta Bukowska, Szymon Tamborski, Andrzej Kowalczyk, and Maciej Wojtkowski Nicolaus Copernicus...
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    12. 1-18 of 18
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  2. Organizations in the News

    1. (18 articles) Nicolaus Copernicus University
    2. (3 articles) Ecole Polytechnique Fédérale de Lausanne
    3. (1 articles) Medical University of Vienna
    4. (1 articles) Spanish National Research Council
  3. People in the News

    1. (16 articles) Maciej Wojtkowski
    2. (10 articles) Andrzej A. Kowalczyk
    3. (8 articles) Ireneusz Grulkowski
    4. (7 articles) Anna Szkulmowska
    5. (7 articles) Iwona Gorczynska
    6. (4 articles) Piotr Targowski
    7. (4 articles) Marcin Sylwestrzak
    8. (3 articles) Theo Lasser
    9. (2 articles) Michalina J. Góra
    10. (1 articles) Susana Marcos
    11. (1 articles) Rainer A. Leitgeb