1. Articles mentioning both Maciej Szkulmowski and Iwona Gorczynska

    1-14 of 14
    1. Computationally effective 2D and 3D fast phase unwrapping algorithms and their applications to Doppler optical coherence tomography

      Computationally effective 2D and 3D fast phase unwrapping algorithms and their applications to Doppler optical coherence tomography
      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 ...
      Read Full Article
    2. Angio-OCT as a noninvasive tool for three-dimensional vascular network visualization in retinal diseases

      Angio-OCT as a noninvasive tool for three-dimensional vascular network visualization in retinal diseases
      In this paper we demonstrate applicability of intensity-based optical coherence tomography technique for noninvasive visualization of 3D retinal microcapillary network. The study was performed with ultra high resolution and high speed (180,000 Ascans/sec) spectral optical coherence tomography (SOCT). New scanning protocols and data processing algorithms have been introduced to visualize microcapillary network. Moreover, results obtained in the eyes of healthy volunteers and patients with eye diseases were compared ...
      Read Full Article
    3. 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 ...
      Read Full Article
    4. 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 ...
      Read Full Article
    5. 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.
      Read Full Article
    6. 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 ...
      Read Full Article
    7. Microfluidics analysis of blood using joint spectral and time domain optical coherence tomography

      Microfluidics analysis of blood using joint spectral and time domain optical coherence tomography
      Although the Doppler Optical Coherence Tomography techniques have already enabled imaging of blood flow in large vessels in biological tissues, the generation of velocity maps of the capillary network is still a challenge. Since several important physiological and pathological phenomena occur in the microcirculation, the possibility of flow imaging and velocity assessment in microcapillaries may be important for medical diagnostics. Understanding of the origin of the Doppler signal in capillary ...
      Read Full Article
    8. Angiogram visualization and total velocity blood flow assessment based on intensity information analysis of OCT data

      Angiogram visualization and total velocity blood flow assessment based on intensity information analysis of OCT data
      We propose two independent OCT data processing methods allowing visualization and analysis of the blood flow. These methods utilize variations in the OCT intensity images caused by flowing blood. The first method calculates standard deviation of intensity to generate retinal OCT angiograms. We present algorithm of this method and results of application for visualization of the microvasculature in the macular area of the human eye in vivo. The second method ...
      Read Full Article
    9. Varnish Thickness Determination by Spectral Optical Coherence Tomography

      The applicability of spectral optical coherence tomography (SOCT) for noninvasive and noncontact assessment of varnish layer thickness and structure on easel paintings is discussed. The SOCT tomograms of such objects are presented. Content Type Book ChapterDOI 10.1007/978-3-540-72130-7_58Authors I. Gorczynska, Opificio delle Pietre Dure di Firenze Laboratorio Scientifico Viale Strozzi 1 50100 Firenze ItalyM. Wojtkowski, Opificio delle Pietre Dure di Firenze Laboratorio Scientifico Viale Strozzi 1 50100 Firenze ItalyM ...
      Read Full Article
    10. Comparison of reflectivity maps and outer retinal topography in retinal disease by 3-D Fourier domain optical coherence tomography

      Comparison of reflectivity maps and outer retinal topography in retinal disease by 3-D Fourier domain optical coherence tomography
      ...omain optical coherence tomography Maciej Wojtkowski, Bartosz L. Sikorski, Iwona Gorczynska, Michalina Gora, Maciej Szkulmowski, Danuta Bukowska, Jakub Kaluzny, James G. Fujimoto, and Andrzej Kowalczyk Optics Expres...
      Read Full Article
    11. 1-14 of 14
  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. (14 articles) Nicolaus Copernicus University
    2. (1 articles) Medical University of Vienna
    3. (1 articles) Massachusetts Institute of Technology
    4. (1 articles) Spanish National Research Council
  3. People in the News

    1. (13 articles) Maciej Wojtkowski
    2. (8 articles) Andrzej A. Kowalczyk
    3. (7 articles) Daniel Szlag
    4. (5 articles) Ireneusz Grulkowski
    5. (3 articles) Piotr Targowski
    6. (2 articles) Marcin Sylwestrzak
    7. (2 articles) Michalina J. Góra
    8. (1 articles) Anna Szkulmowska
    9. (1 articles) James G. Fujimoto
    10. (1 articles) Tomasz Bajraszewski
    11. (1 articles) Susana Marcos
    12. (1 articles) Rainer A. Leitgeb