1. Andrzej A. Kowalczyk

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    1. Mentioned In 38 Articles

    2. Apparatus for optical frequency domain tomography with adjusting system

      Apparatus for optical frequency domain tomography with adjusting system
      In an apparatus for imaging of objects by applying optical frequency domain tomography and provided with an adjusting system for setting a relative position of photosensitive elements (174) and a spectrum image (273), the adjusting system is an automatically controlled device causing a relative displacement of at least one photosensitive element (174) of the detection device (173) of the spectrum and the spectrum image (273) between each other. The adjusting ...
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    3. 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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    4. 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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    5. 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 ...
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    6. 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
      Researchers from Nicolaus Copernicus University have a long history of development of OCT in general and ophthalmology in particular. Recently NCU developed a technique to study the mechanical dynamics of the cornea using high speed OCT combined with an air puff system. Below is a summary of their work.We present a novel method and instrument for in vivo imaging and measurement of the human corneal dynamics during an air ...
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    7. 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
      ...graphy ToC Category: Category Pending Citation David Alonso-Caneiro, Karol Karnowski, Bartlomiej J. Kaluzny, Andrzej Kowalczyk, and Maciej Wojtkowski, "Assessment of corneal dynamics with high-speed swept source Optical...
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    8. Imaging of the lens capsule with an ultrahigh-resolution spectral optical coherence tomography prototype based on a femtosecond laser

      Aim To demonstrate the applicability of ultrahigh-speed, ultrahigh-resolution spectral optical coherence tomography (SOCT) to cross-sectional imaging of the capsular bag in vivo. Methods The ultrahigh-speed and ultrahigh-resolution SOCT prototype was designed and constructed at Nicolaus Copernicus University (Torun, Poland). To obtain an ultrahigh speed up to 100 000 lines/s a new spectrometer with fast CMOS line-scan camera was built. A femtosecond laser with a central wavelength of 780 nm ...
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  2. About Andrzej A. Kowalczyk

    Andrzej A. Kowalczyk

    Andrzej A. Kowalczyk is the head of the Medical Physics Group at the Nicolaus Copernicus University in Poland.  Professor Andrzej Kowalczyk is a founder of Medical Physics in the Institute of Physics at the Nicolaus Copernicus University (NCU). He received his MSc in theoretical physics, PhD in experimental physics and DSc in biophysics form NC in 1970, 1979 and 1994, respectively. Since 2004 he holds the title of professor.