1. Articles mentioning both Polytechnique Montreal and Harvard University

    1-10 of 10
    1. Radiometric model for coaxial single- and multimode optical emission from double-clad fiber

      Radiometric model for coaxial single- and multimode optical emission from double-clad fiber
      Double-clad fibers (DCFs) are versatile waveguides supporting a single-mode core surrounded by a multimode inner cladding. DCFs are increasingly used for multimodal biomedical applications, such as imaging or therapy, for which the core is typically used for coherent illumination and the inner cladding, to support a concurrent modality. Proper optimization is, however, critical to ensure high optical performance and requires accurate modeling of coaxial single- and multimode output beams. In ...
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    2. Collagen Content Limits Optical Coherence Tomography Image Depth in Porcine Vocal Fold Tissue

      Collagen Content Limits Optical Coherence Tomography Image Depth in Porcine Vocal Fold Tissue
      Objective Vocal fold scarring, a condition defined by increased collagen content, is challenging to treat without a method of noninvasively assessing vocal fold structure in vivo. The goal of this study was to observe the effects of vocal fold collagen content on optical coherence tomography imaging to develop a quantifiable marker of disease. Study Design Excised specimen study. Setting Massachusetts Eye and Ear Infirmary. Subjects and Methods Porcine vocal folds ...
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    3. Intraoperative imaging of pediatric vocal fold lesions using optical coherence tomography

      Intraoperative imaging of pediatric vocal fold lesions using optical coherence tomography
      Optical coherence tomography (OCT) has been previously identified as a promising tool for exploring laryngeal pathologies in adults. Here, we present an OCT handheld probe dedicated to imaging the unique geometry involved in pediatric laryngoscopy. A vertical cavity surface emitting laser-based wavelength-swept OCT system operating at 60 frames per second was coupled to the probe to acquire three-dimensional (3-D) volumes in vivo . In order to evaluate the performance of the ...
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    4. Using attenuation coefficients from optical coherence tomography as markers of vocal fold maturation

      Using attenuation coefficients from optical coherence tomography as markers of vocal fold maturation
      Objectives/Hypothesis Optical coherence tomography (OCT) is a promising technology to noninvasively assess vocal fold microanatomy. The goal of this study was to develop a methodology using OCT to identify quantifiable markers of vocal fold development. Study Design In vivo study. Methods A two-step process was developed to reproducibly image the midmembranous vocal fold edge of 10 patients younger than 2 years and 10 patients between 11 and 16 years ...
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    5. Feature Of The Week 5/10/2015: Laser Tissue Coagulation and Concurrent Optical Coherence Tomography Through a Double-Clad Fiber Coupler

      Feature Of The Week 5/10/2015: Laser Tissue Coagulation and Concurrent Optical Coherence Tomography Through a Double-Clad Fiber Coupler
      ...ologies such as Barretts esophagus. For more information see recent Article. Courtesy of Kathy Beaudette from Polytechnique Montreal. This work is the result of a collaboration between researchers from Professor Caroline...
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    6. Multimodal reconstruction of microvascular-flow distributions using combined two-photon microscopy and Doppler optical coherence tomography

      Multimodal reconstruction of microvascular-flow distributions using combined two-photon microscopy and Doppler optical coherence tomography
      Computing microvascular cerebral blood flow ( CBF ) in real cortical angiograms is challenging. Here, we investigated whether the use of Doppler optical coherence tomography (DOCT) flow measurements in individual vessel segments can help in reconstructing CBF across the entire vasculature of a truncated cortical angiogram. A CBF computational framework integrating DOCT measurements is presented. Simulations performed on a synthetic angiogram showed that the addition of DOCT measurements, especially close to large ...
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    7. Laser tissue coagulation and concurrent optical coherence tomography through a double-clad fiber coupler

      Laser tissue coagulation and concurrent optical coherence tomography through a double-clad fiber coupler
      ...ntreal, Department of Engineering Physics, Montreal, QC H3C 3A7, Canada ^2Wellman Center for Photomedicine, Harvard Medical School and Massachusetts General Hospital, Boston, Massachusetts 02114, USA ^3School of Elec...
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    8. 1-10 of 10
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  2. Organizations in the News

    1. (6 articles) Massachusetts General Hospital
    2. (4 articles) Massachusetts Eye and Ear Infirmary
    3. (2 articles) Massachusetts Institute of Technology
    4. (1 articles) Sungkyunkwan University
    5. (1 articles) University of Central Florida
    6. (1 articles) Cornell University
    7. (1 articles) Washington University in St. Louis
    8. (1 articles) Columbia University
    9. (1 articles) Seoul National University
    10. (1 articles) University of Bern
    11. (1 articles) Carnegie Mellon University
    12. (1 articles) University of Rochester
  3. OCT Companies in the News

    1. (1 articles) Thorlabs
    2. (1 articles) Boston Scientific
    3. (1 articles) Cambridge Technology
    4. (1 articles) NKT Photonics