1. Jihoon Na

    0 Comments Leave a Comment

    1-16 of 16
    1. Mentioned In 16 Articles

    2. Tomographic imaging of incipient dental-caries using optical coherence tomography and comparison with various modalities

      We present the optical coherence tomography (OCT) made to investigate the early dental caries in human teeth and compare its results with those taken by conventional imaging modalities including light illuminating examination (LIE), digital intra-oral radiography (DIOR), and electron probe micro analyzer (EPMA). Morphological features and caries-involved areas of the dental structure were mainly investigated by LIE, DIOR, and OCT to study the infection of the caries lesion in pits ...
      Read Full Article
    3. Feature Of The Week 7/5/09: Single-body lensed-fiber scanning probe actuated by magnetic force for optical imaging

      Feature Of The Week 7/5/09: Single-body lensed-fiber scanning probe actuated by magnetic force for optical imaging
      Feature Of The Week: 7/5/09: In recent years, hand-held and endoscopic optical coherence tomography (OCT) has been investigated for a variety of clinical and therapeutic applications. As critical factors affecting the OCT performance, compactness and scanning speed of the sample arm of an OCT system have been widely recognized. Therefore, many scanning schemes have been investigated such as piezoelectric, rotational-micro-electro-mechanical-system (MEMS), electrostatic, and bimorph scanners. However, the piezoelectric ...
      Read Full Article
    4. Optical approach to the periodontal ligament under orthodontic tooth movement: A preliminary study with optical coherence tomography

      Optical approach to the periodontal ligament under orthodontic tooth movement: A preliminary study with optical coherence tomography
      Introduction: Optical coherence tomography (OCT) is a diagnostic tool that can make near-histologic tomographic images without a biohazard. Due to its high resolution (average, 4 μm) and safety (using light as the source), it has been applied widely in medical fields to replace invasive biopsies. But the trials in dentistry have been restricted to mainly detecting dental caries and oral cancer. In this preliminary study for successive human studies, we ...
      Read Full Article
    5. Simultaneous measurement of refractive index and thickness by combining low-coherence interferometry and confocal optics

      We propose and demonstrate novel methods that enable simultaneous measurements of the phase index, the group index, and the geometrical thickness of an optically transparent object by combining optical low-coherence interferometer and confocal optics. The low-coherence interferometer gives ... [Opt. Express 16, 5516-5526 (2008)]
      Read Full Article
    6. Lensed fiber probes designed as an alternative to bulk probes in optical coherence tomography

      We demonstrate a compact all-fiber sampling probe for an optical coherence tomography (OCT) system. By forming a focusing lens directly on the tip of an optical fiber, a compact sampling probe could be implemented. To simultaneously achieve a sufficiently long working distance and a good lateral ... [Appl. Opt. 47, 1510-1516 (2008)]
      Read Full Article
    7. Optical approach for monitoring the periodontal ligament changes induced by orthodontic forces around maxillary anterior teeth of white rats

      Optical approach for monitoring the periodontal ligament changes induced by orthodontic forces around maxillary anterior teeth of white rats
      ...ts as well. Content Type Journal ArticleCategory Original ArticleDOI 10.1007/s11517-007-0300-0Authors Jihoon Na, Gwangju Institute of Science and Technology (GIST) Department of Information and Communications 1 O...
      Read Full Article
    8. Image restoration method based on Hilbert transform for full-field optical coherence tomography

      A full-field optical coherence tomography (FF-OCT) system utilizing a simple but novel image restoration method suitable for a high-speed system is demonstrated. An en-face image is retrieved from only two phase-shifted interference fringe images through using the mathematical Hilbert transform. ... [Appl. Opt. 47, 459-466 (2008)]
      Read Full Article
    9. Single-body lensed photonic crystal fibers as side-viewing probes for optical imaging systems.

      We report the fabrication and performance of a lensed photonic crystal fiber (PCF) designed as a compact but effective side-viewing optical imaging probe. The lensed-PCF probe was implemented in a single body without using any other fibers or additional optics. The beam expansion region and a focusing ball lens, necessary for a focuser, were simultaneously formed along a small piece of PCF by applying arc discharges. The side-viewing ability was ...
      Read Full Article
    10. Single-body lensed photonic crystal fibers as side-viewing probes for optical imaging systems

      We report the fabrication and performance of a lensed photonic crystal fiber (PCF) designed as a compact but effective side-viewing optical imaging probe. The lensed-PCF probe was implemented in a single body without using any other fibers or additional optics. The beam expansion region and a ... [Opt. Lett. 33, 34-36 (2008)]
      Read Full Article
    11. 1-16 of 16
  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 Jihoon Na

    Jihoon Na is with the Department of Information and Communications at the Gwangju Institute of Science and Technology.