1. Sang-Won Lee

    0 Comments Leave a Comment

    1-15 of 21 1 2 »
    1. Mentioned In 21 Articles

    2. Retina phantom for the evaluation of optical coherence tomography angiography based on microfluidic channels

      Retina phantom for the evaluation of optical coherence tomography angiography based on microfluidic channels
      Optical coherence tomography (OCT) angiography (OCTA) has been actively studied as a noninvasive imaging technology to generate retinal blood vessel network maps for the diagnoses of retinal diseases. Given that the uses of OCT and OCTA have increased in the field of ophthalmology, it is necessary to develop retinal phantoms for clinical OCT for product development, performance evaluation, calibration, certification, medical device licensing, and production processes. We developed a retinal ...
      Read Full Article
      Mentions: Sang-Won Lee
    3. Stacked Gold Nanodisks for Bimodal Photoacoustic and Optical Coherence Imaging

      Stacked Gold Nanodisks for Bimodal Photoacoustic and Optical Coherence Imaging
      Herein, we report on biological imaging nanoprobes: physically-synthesized gold nanodisks that have inherent optical advantagesa wide range of resonant wavelengths, tunable ratio of light absorption-to-scattering, and responsiveness to random incident lightdue to their two-dimensional circular nanostructure. Based on our proposed physical synthesis where gold is vacuum-deposited onto a pre-patterned polymer template and released from the substrate in the form of a nanodisk, monodisperse two-dimensional gold nanodisks were prepared with independent ...
      Read Full Article
      Mentions: Sang-Won Lee
    4. Intraocular application of gold nanodisks optically tuned for optical coherence tomography: inhibitory effect on retinal neovascularization without unbearable toxicity

      Intraocular application of gold nanodisks optically tuned for optical coherence tomography: inhibitory effect on retinal neovascularization without unbearable toxicity
      Bare gold nanospheres have been shown to have anti-angiogenic effects but are optically unfavorable because their resonant wavelength lies in the visible spectrum. Here, we design gold nanodisks with a higher scattering capability than gold nanorods and with a resonant wavelength at near-infrared region the area where the source of light utilized by optical coherence tomography (OCT) lies. With a physical synthesis system, we then fabricate 160-nm-sized gold nanodisks exhibiting ...
      Read Full Article
      Mentions: Sang-Won Lee
    5. Ultrahigh-Resolution Spectral Domain Optical Coherence Tomography Based on a Linear-Wavenumber Spectrometer

      Ultrahigh-Resolution Spectral Domain Optical Coherence Tomography Based on a Linear-Wavenumber Spectrometer
      In this study we demonstrate ultrahigh-resolution spectral domain optical coherence tomography (UHR SD-OCT) with a linear-wavenumber (k) spectrometer, to accelerate signal processing and to display two-dimensional (2-D) images in real time. First, we performed a numerical simulation to find the optimal parameters for the linear-k spectrometer to achieve ultrahigh axial resolution, such as the number of grooves in a grating, the material for a dispersive prism, and the rotational angle ...
      Read Full Article
    6. Optics for forming a linear beam in optical coherence tomography

      Optics for forming a linear beam in optical coherence tomography
      This invention relates to an optical coherence tomography, in which a light source and an optical linear beam forming system are adopted to obtain two dimensional image of high quality resolution within short time without affection by any mechanical movements. For such purpose, the optical linear beam forming system (20) comprises semicy Under lens (21), convex lens (22) and slit (23) to implement the frequency domain optical coherence tomography. Parallel ...
      Read Full Article
    7. Spectral-domain OCT with dual illumination and interlaced detection for simultaneous anterior segment and retina imaging

      Spectral-domain OCT with dual illumination and interlaced detection for simultaneous anterior segment and retina imaging
      We present Fourier-domain/spectral-domain optical coherence tomography (FD/SD-OCT) using a single spectrometer with dual illumination and interlaced detection at 830 nm, which can provide anterior segment and retinal tomograms simultaneously. Two orthogonal polarization components were used so that both parallel and focused beams could simultaneously be made incident on the eye. This configuration with a polarization-separated sample arm enables us to acquire images from the anterior segment and retina ...
      Read Full Article
    8. Investigating in vivo airway wall mechanics during tidal breathing with optical coherence tomography

      Investigating in vivo airway wall mechanics during tidal breathing with optical coherence tomography
      Optical coherence tomography (OCT) is a nondestructive imaging technique offering high temporal and spatial resolution, which makes it a natural choice for assessing tissue mechanical properties. We have developed methods to mechanically analyze the compliance of the rabbit trachea in vivo using tissue deformations induced by tidal breathing, offering a unique tool to assess the behavior of the airways during their normal function. Four-hundred images were acquired during tidal breathing ...
      Read Full Article
    9. 1-15 of 21 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 Sang-Won Lee

    Sang-Won Lee is a research in the Biomedical Engineering Department at Yonsei University, Korea.