Articles from Maciej Szkulmowski

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  1. Fuchs’ Endothelial Dystrophy in 830-nm Spectral Domain Optical Coherence Tomography

    Explore Article Ophthalmic Surgery, Lasers and Imaging (Sep 10 2008) Ophthalmology

    This article presents for the first time the potential of 830-nm spectral domain optical coherence tomography (SD-OCT) in the evaluation of Fuchs’ endothelial dystrophy. SD-OCT is an imaging technique that can be used for in vivo cross-sectional corneal visualization. The important features of SD-OCT instruments include improved sensitivity and short acquisition time, which improves the quality of the tomograms compared with conventional time domain OCT. Tomograms of the corneas of ... (Read Full Article)

    Comment on Article Mentions:   Maciej Wojtkowski   Nicolaus Copernicus University   Andrzej A. Kowalczyk

  2. Granular Corneal Dystrophy in 830-nm Spectral Optical Coherence Tomography.

    Explore Article Cornea (Jul 23 2008) Ophthalmology

    Page: 830DOI: 10.1097/ICO.0b013e31816be90fAuthors: Kaluzny, Bartlomiej J PhD; Szkulmowska, Anna MSc; Szkulmowski, Maciej MSc; Bajraszewski, Tomasz MSc; Wawrocka, Anna MSc; Krawczynski, Maciej R PhD; Kowalczyk, Andrzej PhD; Wojtkowski, Maciej PhD (Read Full Article)

    Comment on Article Mentions:   Nicolaus Copernicus University   Maciej Wojtkowski   Andrzej A. Kowalczyk

  3. Correlation of Spectral Optical Coherence Tomography with Fluorescein and Indocyanine Green Angiography in Multiple Evanescent White Dot Syndrome

    Explore Article BJO Online (Jul 8 2008) Ophthalmology

    Aims: To determine spatial location of lesions in Multiple Evanescent White Dot Syndrome (MEWDS) with the aid of spectral optical coherence topography (SOCT), fluorescein angiography (FA) and indocyanine green angiography (ICGA). Methods: A novel method of three-dimensional SOCT data analysis called reflectivity maps was introduced. The reflectivity maps display the distribution of a back-reflected intensity taken only from individual retinal layers located at specific distance from the reference plane. Reflectivity ... (Read Full Article)

    Comment on Article Mentions:   Maciej Wojtkowski   Nicolaus Copernicus University   Maciej Szkulmowski

  4. Phase-resolved Doppler optical coherence tomography—limitations and improvements

    Explore Article opticsinfobase.org (Jun 18 2008)

    Anna Szkulmowska, Maciej Szkulmowski, Andrzej Kowalczyk, Maciej WojtkowskiWe describe how the simple phase difference averaging causes a systematic bias in the velocity estimation obtained by phase-resolved Fourier domain optical coherence tomography (FdOCT). The magnitude of this bias depends on the signal-to-noise ratio as well as proximity of the measured velocity to ... [Opt. Lett. 33, 1425-1427 (2008)] (Read Full Article)

    Comment on Article Mentions:   Anna Szkulmowska   Maciej Szkulmowski   Maciej Wojtkowski

  5. Flow velocity estimation using joint Spectral and Time domain Optical Coherence Tomography

    Explore Article opticsinfobase.org (Apr 14 2008) Ophthalmology

    Maciej Szkulmowski, Anna Szkulmowska, Tomasz Bajraszewski, Andrzej Kowalczyk, Maciej Wojtkowski We propose a modified method of acquisition and analysis of Spectral Optical Coherence Tomography (SOCT) data to provide information about flow velocities. The idea behind this method is to acquire a set of SOCT spectral fringes dependent on time followed by a numerical analysis using two ... [Opt. Express 16, 6008-6025 (2008)] (Read Full Article)

    Comment on Article Mentions:   Maciej Wojtkowski   Tomasz Bajraszewski   Anna Szkulmowska

  6. Improved spectral optical coherence tomography using optical frequency comb

    Explore Article opticsinfobase.org (Mar 12 2008)

    Tomasz Bajraszewski, Maciej Wojtkowski, Maciej Szkulmowski, Anna Szkulmowska, Robert Huber, Andrzej Kowalczyk. We identify and analyze factors influencing sensitivity drop-off in Spectral OCT and propose a system employing an Optical Frequency Comb (OFC) to verify this analysis. Spectral Optical Coherence Tomography using a method based on an optical frequency comb is demonstrated. Since the spectrum ... [Opt. Express 16, 4163-4176 (2008)] (Read Full Article)

    Comment on Article Mentions:   Maciej Wojtkowski   Robert Huber   Tomasz Bajraszewski

  7. Simultaneous analysis of extinction and flow velocity with joint spectral and time domain OCT

    Explore Article SPIE Digital Library (Feb 18 2008)

    Maciej Wojtkowski, Maciej Szkulmowski, Tomasz Bajraszewski et al. In this contribution we propose a new method of acquisition and analysis of Spectral Optical Coherence Tomography data to obtain information about depth dependent extinction in the scattering media. In joint Spectral and Time domain OCT a set of Spectral Optical Coherence Tomography fringes is acqui ... [Proc. SPIE Int. Soc. Opt. Eng. 6847, 68471M (2008)] published Mon Feb 18, 2008. (Read Full Article)

    Comment on Article Mentions:   Maciej Wojtkowski   Tomasz Bajraszewski   Maciej Szkulmowski

  8. Flow velocity analysis with joint spectral and time domain OCT

    Explore Article SPIE Digital Library (Feb 18 2008)

    Maciej Szkulmowski, Maciej Wojtkowski, Anna Szkulmowska et al. We propose a new method of acquisition and analysis of Spectral Optical Coherence Tomography data. The method acquires a set of SOCT spectral fringes as a function of time. The Fourier analysis of such data allows for investigation of various functional aspects of analyzed tissue. We show that Doppl ... [Proc. SPIE Int. Soc. Opt. Eng. 6847, 68471K (2008)] published Mon Feb ... (Read Full Article)

    Comment on Article Mentions:   Maciej Wojtkowski   Anna Szkulmowska

  9. Retinal blood flow analysis using joint spectral and time domain optical coherence tomography

    Explore Article SPIE Digital Library (Feb 11 2008) Ophthalmology

    Anna Szkulmowska, Maciej Szkulmowski, Tomasz Bajraszewski et al. We propose a new technique of measuring and analysis of OCT signals: joint Spectral and Time domain Optical Coherence Tomography (STdOCT). This technique is based on a multiple spectral interferogram registration in time increments. The analysis of a single spectral interferogram provides an axial s ... [Proc. SPIE Int. Soc. Opt. Eng. 6844, 68440K (2008)] published Mon Feb 11, 2008. (Read Full Article)

    Comment on Article Mentions:   Tomasz Bajraszewski   Maciej Szkulmowski   Anna Szkulmowska

  10. Mapping of photoreceptor dysfunction using high resolution three-dimensional spectral optical coherence tomography

    Explore Article SPIE Digital Library (Feb 11 2008) Ophthalmology

    B. L. Sikorski, M. Szkulmowski, J. J. Kaluzny et al. The ability to obtain reliable information on functional status of photoreceptor layer is essential for assessing vision impairment in patients with macular diseases. The reconstruction of three-dimensional retinal structure in vivo using Spectral Optical Coherence Tomography (Spectral OCT) became p ... [Proc. SPIE Int. Soc. Opt. Eng. 6844, 68440J (2008)] published Mon Feb 11, 2008. (Read Full Article)

    Comment on Article Mentions:   Bartlomiej J. Kaluzny   Maciej Wojtkowski   Andrzej A. Kowalczyk

  11. Optical Coherence Tomography for Tracking Canvas Deformation

    Explore Article Hindawi Publishing Corporation (Nov 29 2006) Art

    Preliminary results of the application of optical coherence tomography (OCT), in particular in its spectral mode (SOCT), to tracking of deformations in paintings on canvas caused by periodical humidity changes are presented. The setup is able to monitor the position of a chosen point at the surface of a painting with micrometre precision, simultaneously in three dimensions, every 100 seconds. This allows recording of deformations associated with crack formation. For ... (Read Full Article)

    Comment on Article Mentions:   Nicolaus Copernicus University   Tomasz Bajraszewski   Maciej Szkulmowski

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