1. Articles from Xavier Attendu

    1-4 of 4
    1. Coregistered optical coherence tomography and frequency-encoded multispectral imaging for spectrally sparse color imagingv

      Coregistered optical coherence tomography and frequency-encoded multispectral imaging for spectrally sparse color imagingv

      We present a system combining optical coherence tomography (OCT) and multispectral imaging (MSI) for coregistered structural imaging and surface color imaging. We first describe and numerically validate an optimization model to guide the selection of the MSI wavelengths and their relative intensities. We then demonstrate the integration of this model into an all-fiber bench-top system. We implement frequency-domain multiplexing for the MSI to enable concurrent acquisition of both OCT and MSI at OCT acquisition rates. Such a system could be implemented in endoscopic practices to provide multimodal, high-resolution imaging of deep organ structures that are currently inaccessible to standard video ...

      Read Full Article
    2. Simple and robust calibration procedure for k-linearization and dispersion compensation in optical coherence tomography

      Simple and robust calibration procedure for k-linearization and dispersion compensation in optical coherence tomography

      In Fourier-domain optical coherence tomography (FD-OCT), proper signal sampling and dispersion compensation are essential steps to achieve optimal axial resolution. These calibration steps can be performed through numerical signal processing, but require calibration information about the system that may require lengthy and complex measurement protocols. We report a highly robust calibration procedure that can simultaneously determine correction vectors for nonlinear wavenumber sampling and dispersion compensation. The proposed method requires only two simple mirror measurements and no prior knowledge about the system’s illumination source or detection scheme. This method applies to both spectral domain and swept-source OCT systems. Furthermore, it ...

      Read Full Article
    3. Combined optical coherence tomography and hyperspectral imaging using a double-clad fiber coupler

      Combined optical coherence tomography and hyperspectral imaging using a double-clad fiber coupler

      This work demonstrates the combination of optical coherence tomography (OCT) and hyperspectral imaging (HSI) using a double-clad optical fiber coupler. The single-mode core of the fiber is used for OCT imaging, while the inner cladding of the double-clad fiber provides an efficient way to capture the reflectance spectrum of the sample. The combination of both methods enables three-dimensional acquisition of the sample morphology with OCT, enhanced with complementary molecular information contained in the hyperspectral image. The HSI data can be used to highlight the presence of specific molecules with characteristic absorption peaks or to produce true color images overlaid on ...

      Read Full Article
    4. Combined optical coherence tomography and hyper-spectral imaging using a double clad fiber coupler

      Combined optical coherence tomography and hyper-spectral imaging using a double clad fiber coupler

      This proceedings shows the combination of Optical Coherence Tomography (OCT) and Hyper-Spectral Imaging (HSI) using a double-clad optical fiber. The single mode core of the fiber is used to transmit OCT signals, while the cladding, with its large collection area, provides an efficient way to capture the reflectance spectrum of the sample. The combination of both methods enables three-dimensional acquisition of sample morphology with OCT, enhanced by the molecular information contained in its hyper-spectral image. We believe that the combination of these techniques could result in endoscopes with enhanced tissue identification capability

      Read Full Article
    1-4 of 4
  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. Topics in the News

    1. (4 articles) Polytechnique Montreal
    2. (3 articles) Caroline Boudoux
    3. (2 articles) Stanford University
    4. (2 articles) Audrey K. Bowden
    5. (1 articles) Academic Medical Center at the University of Amsterdam
    6. (1 articles) Dirk J. Faber
    7. (1 articles) Ton G. van Leeuwen
    8. (1 articles) Castor Optics
    9. (1 articles) Duke University
    10. (1 articles) Sina Farsiu
    11. (1 articles) PhotoniCare
  3. Popular Articles

  4. Picture Gallery

    Combined optical coherence tomography and hyper-spectral imaging using a double clad fiber coupler Combined optical coherence tomography and hyperspectral imaging using a double-clad fiber coupler Simple and robust calibration procedure for k-linearization and dispersion compensation in optical coherence tomography Coregistered optical coherence tomography and frequency-encoded multispectral imaging for spectrally sparse color imagingv Duke University Engineering Professor Sina Farsiu Elected Fellow of the IEEE PhotoniCare Takes First Place at the 2019 HealthTECH Startup Competition Close Assessment and Testing for Chronic Graft Versus Host Disease, CATCH Study GaAs-Based InPBi Quantum Dots for High Efficiency Super-Luminescence Diodes Pearls and Pitfalls of Optical Coherence Tomography Angiography Image Interpretation Novel optical coherence tomography findings in idiopathic choroidal folds Artificial Intelligence and Healthcare: Products and Procedures Oral Diagnosis Minimally Invasive Imaging Approaches (Textbook)