1. Byeong Ha Lee

    0 Comments Leave a Comment

    1-15 of 61 1 2 3 4 »

    1. Mentioned In 61 Articles

    2. Quantitative discrimination of pearls using polarization-sensitive optical coherence tomography

      Explore OSA | OSA Publishing NDE/NDT
      Quantitative discrimination of pearls using polarization-sensitive optical coherence tomography
      We propose a robust method that can quantitatively discriminate genuine pearls from imitation ones by introducing the concept of entropy in the polarization-sensitive optical coherence tomography (PS-OCT). Qualitatively, by examining the birefringence properties of the nacre region of pearls with PS-OCT, the genuine pearls can be easily discriminated. To quantify the amount of birefringence formation, however, the concept of phase retardation entropy is introduced, which is expected to have a ...
      Read Full Article
      Mentions: Byeong Ha Lee Gwangju Institute of Science and Technology Hae Yeon Kim

    3. In vivo three-dimensional imaging of human corneal nerves using Fourier-domain optical coherence tomography

      Explore SPIE | Journal Ophthalmology
      In vivo three-dimensional imaging of human corneal nerves using Fourier-domain optical coherence tomography
      We have employed Fourier-domain optical coherence tomography (FD-OCT) to achieve corneal nerve imaging, which could be useful in surgical planning and refractive surgery. Because the three-dimensional (3-D) images of the corneal nerves were acquiredin vivo, unintentional movement of the subject during the measurement led to imaging artifacts. These artifacts were compensated for with a series of signal processing techniques, namely realigning A-scan images to flatten the boundary and cross-correlating adjacent ...
      Read Full Article
      Mentions: Byeong Ha Lee Gwangju Institute of Science and Technology Jun Geun Shin

    4. Mesenchymal stem cell-laden hybrid scaffold for regenerating subacute tympanic membrane perforation

      Explore ScienceDirect Otolaryngology
      Mesenchymal stem cell-laden hybrid scaffold for regenerating subacute tympanic membrane perforation
      ympanic membrane (TM) perforation is one of the most common otology complications. To date, there has not been reported TM regeneration using bioprinted scaffold. The purpose of this study was to evaluate the efficacy and feasibility of bioprinted polycaprolactone/collagen/alginate-mesenchymal stem cell (PCAMSC) scaffolds for the regeneration of subacute TM perforation. Sprague-Dawley rats were used in an animal model of subacute TM perforation. In the experimental group (n = 7 ...
      Read Full Article
      Mentions: Byeong Ha Lee

    5. Examination of Gland Dropout Detected on Infrared Meibography by Using Optical Coherence Tomography Meibography

      Explore ScienceDirect
      Examination of Gland Dropout Detected on Infrared Meibography by Using Optical Coherence Tomography Meibography
      Purpose To elucidate the anatomic details of gland dropout detected on two-dimensional infrared (IR) meibography in cases of dry eye associated with meibomian gland dysfunction (MGD) by using three-dimensional optical coherence tomography (OCT) meibography. Methods In this cross-sectional, observational case series, we enrolled gland dropout detected on IR meibography; the condition was then examined using a real-time swept-source OCT system. Accordingly, a series of 500 raster B-scan OCT images, with ...
      Read Full Article
      Mentions: University of Rochester Byeong Ha Lee Gwangju Institute of Science and Technology

    6. An All-Fiber-Optic Combined System of Noncontact Photoacoustic Tomography and Optical Coherence Tomography

      Explore MDPI Open Access Journals Platform
      An All-Fiber-Optic Combined System of Noncontact Photoacoustic Tomography and Optical Coherence Tomography
      We propose an all-fiber-based dual-modal imaging system that combines noncontact photoacoustic tomography (PAT) and optical coherence tomography (OCT). The PAT remotely measures photoacoustic (PA) signals with a 1550-nm laser on the surface of a sample by utilizing a fiber interferometer as an ultrasound detector. The fiber-based OCT, employing a swept-source laser centered at 1310 nm, shares the sample arm of the PAT system. The fiber-optic probe for the combined system ...
      Read Full Article
      Mentions: Byeong Ha Lee Gwangju Institute of Science and Technology Jonghyun Eom

    7. An All-Fiber-Optic Combined System of Noncontact Photoacoustic Tomography and Optical Coherence Tomography

      Explore MDPI Open Access Journals Platform
      An All-Fiber-Optic Combined System of Noncontact Photoacoustic Tomography and Optical Coherence Tomography
      We propose an all-fiber-based dual-modal imaging system that combines noncontact photoacoustic tomography (PAT) and optical coherence tomography (OCT). The PAT remotely measures photoacoustic (PA) signals with a 1550-nm laser on the surface of a sample by utilizing a fiber interferometer as an ultrasound detector. The fiber-based OCT, employing a swept-source laser centered at 1310 nm, shares the sample arm of the PAT system. The fiber-optic probe for the combined system ...
      Read Full Article
      Mentions: Byeong Ha Lee Gwangju Institute of Science and Technology Jonghyun Eom

    8. All optical fiber combined-imaging system of photoacoustic and optical coherence tomography

      Explore Conference Proceedings
      All optical fiber combined-imaging system of photoacoustic and optical coherence tomography
      We present an all optical fiber combined-imaging system that integrates non-contact photoacoustic tomography (NPAT) and optical coherence tomography (OCT) to simultaneously provide PA and OCT images. The fiber-based PAT system utilizing a Mach-Zehnder interferometer with a fiber laser of 1550 nm measures the photoacoustic signal at the sample surface. For the generation of a PA signal, a pulse train from a bulk type Nd:YAG laser illuminates the sample via ...
      Read Full Article
      Mentions: Byeong Ha Lee Gwangju Institute of Science and Technology Jonghyun Eom

    15. Fiber-based optical coherence tomography for biomedical imaging, sensing, and precision measurements

      Explore ScienceDirect Probes
      Fiber-based optical coherence tomography for biomedical imaging, sensing, and precision measurements
      Recently published studies on fiber-based optical coherence tomography (OCT) are reviewed mainly in relation to applications within the fields of biomedical imaging and precision measurement. A succinct introduction to fiber-based OCT system configurations is described including history, related core components, and functional characteristics. Then, an overview of fiber-optic probes is presented in terms of actuating method, scanning direction, and functionality. In order to verify the performance of fiber-optic OCT systems ...
      Read Full Article
      Mentions: Byeong Ha Lee Eun Jung Min Gwangju Institute of Science and Technology
    17. 1-15 of 61 1 2 3 4 »
  1. Search:

  2. 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

  4. About Byeong Ha Lee

    Byeong Ha Lee

    Byeong Ha Lee received his B.S. and M.S. degrees in physics from Seoul National University, Korea, in 1984 and 1989, respectively. He obtained Ph.D degree in physics from University of Colorado at Boulder, USA. After working as STA in Osaka National Research Institute of Japan from 1997-1999, he joined Gwangju Institute of Science and Technology (GIST), Korea, where he is currently serving as a full-time professor. He is specialized in areas related to fiber optic sensors, fiber gratings, specialty fibers, optical coherence tomography (OCT), and digital holographic microscopy (DHM). His current research interests are related to developing fiber/bulk optic systems for biomedical applications including cell biology.

  5. Related Topics

    1. Single-body lensed photonic crystal fibers as side-viewing probes for optical imaging systems
      60 articles also mentioned Gwangju Institute of Science and Technology
    2. Image restoration method based on Hilbert transform for full-field optical coherence tomography
      19 articles also mentioned Woo June Choi
    3. Multimodal analysis of pearls and pearl treatments by using optical coherence tomography and fluorescence spectroscopy
      16 articles also mentioned Jun Geun Shin
    4. Single-body lensed fiber probe actuated by magnetic force for spectral domain optical coherence tomography
      16 articles also mentioned Eun Jung Min
    5. Tomographic imaging of a suspending single live cell using optical tweezer-combined full-field optical coherence tomography
      10 articles also mentioned Tae Joong Eom