1. Shoude Chang

    0 Comments Leave a Comment

    1-15 of 27 1 2 »
    1. Mentioned In 27 Articles

    2. IMPROVED ARTERIAL TISSUE DIFFERENTIATION BY SPECTROSCOPIC OPTICAL COHERENCE TOMOGRAPHY

      IMPROVED ARTERIAL TISSUE DIFFERENTIATION BY SPECTROSCOPIC OPTICAL COHERENCE TOMOGRAPHY
      Optical coherence tomography (OCT) is a relatively new imaging modality similar with ultrasound where the sound waves are replaced by ballistic photons. OCT provides images at high spatial resolution which allow for the identification of micron size morphological tissue structures. A high impact application is visualization of arterial wall and atherosclerotic plaques. Despite high spatial resolution to complete the transfer of this imaging modality into clinical environment there is a ...
      Read Full Article
    3. Optical catheter with rotary optical cap

      Optical catheter with rotary optical cap
      A scanning optical head for a catheter is locally controlled by a motor at an insertion end of the catheter uses a hollow motor through which a longitudinal optical path of the catheter passes. This permits the motor to be positioned between a control base of the catheter and avoids rotating the whole fiber, and therefore makes the beam scanning stable and accurate. In addition, because there is no coupling ...
      Read Full Article
    4. Dual-Source Swept-Source Optical Coherence Tomography Reconstructed on Integrated Spectrum

      Dual-Source Swept-Source Optical Coherence Tomography Reconstructed on Integrated Spectrum
      Dual-source swept-source optical coherence tomography (DS-SSOCT) has two individual sources with different central wavelengths, linewidth, and bandwidths. Because of the difference between the two sources, the individually reconstructed tomograms from each source have different aspect ratio, which makes the comparison and integration difficult. We report a method to merge two sets of DS-SSOCT raw data in a common spectrum, on which both data have the same spectrum density and a ...
      Read Full Article
    5. A Study of Spectral Domain Optical Coherence Tomography and Photoacoustic Microscopy for Biometric and Biomedical Applications (Thesis)

      A Study of Spectral Domain Optical Coherence Tomography and Photoacoustic Microscopy for Biometric and Biomedical Applications (Thesis)
      ...Hoshino, “Impact of artificial „gummy‟ fingers on fingerprint systems”, Proc. SPIE, Vol. 4677, 275-289, 2002. S. Chang, Y. Cheng, K. Larin, Y. Mao, S. Sherif and C. Flueraru, “Optical coherence tomography for security an...
      Read Full Article
    6. Performance analysis of a swept-source optical coherence tomography system with a quadrature interferometer and optical amplification

      Performance analysis of a swept-source optical coherence tomography system with a quadrature interferometer and optical amplification
      A performance analysis of signal to noise ratio for an optical coherence tomography system with quadrature detection and a semiconductor optical amplifier in the sample arm is discussed. The results are compared and discussed in relation to a conventional OCT system (without optical amplification). An increase of the signal to noise ratio up to 14 dB at a depth of 0.5 mm is obtained compared to the system without ...
      Read Full Article
    7. Feature Of The Week 7/4/10: Using Optical Coherence Tomography for Detection and Analysis of Jade

      Feature Of The Week 7/4/10: Using Optical Coherence Tomography for Detection and Analysis of Jade
      Feature Of The Week 7/4/10: Researchers at the National Research Council Canada have been very active in pushing the frontier of Optical Coherence Tomography across a wide range of technologies and applications. Recently Dr. Shoude Change et al published on a novel non-destructive evaluation application of OCT entitled "Jade Detection and Analysis Based on Optical Coherence Tomography Images". With a depth resolution of 4 mm in jade, and ...
      Read Full Article
    8. Added soft tissue contrast using signal attenuation and the fractal dimension for optical coherence tomography images of porcine arterial tissue

      Added soft tissue contrast using signal attenuation and the fractal dimension for optical coherence tomography images of porcine arterial tissue
      Optical coherence tomography (OCT) images of left-descending coronary tissues harvested from three porcine specimens were acquired with a home-build swept-source OCT setup. Despite the fact that OCT is capable of acquiring high resolution circumferential images of vessels, many distinct histological features of a vessel have comparable optical properties leading to poor contrast in OCT images. Two classification methods were tested in this report for the purpose of enhancing contrast between ...
      Read Full Article
    9. 1-15 of 27 1 2 »
  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. About Shoude Chang

    Shoude Chang

    Shoude Chang is with the Institute for Microstructural Sciences at the National Research Council of Canada.  Dr. Chang obtained his BS in electronic engineering in 1977, his MS in communications and electronic systems in 1986 from China, and his PhD in Physics in 1995 from Laval University, Canada. Most of his activities have been related to digital / optical information processing and pattern recognition. As a senior research officer in National Research Council Canada, he is currently working on projects involving with optical information processing and pattern recognition including optical coherence tomography, medical imaging, biometrics and document security.