Dr. Seungrag Lee Profile

Dr. Seungrag Lee

at Osong Medical Innovation Foundation

SPIE Involvement:

Author

Publications (22)

Proceedings Article | 20 August 2020 Poster + Paper

Compacted optical endoscopic probe for in vivo fluorescence optical imaging device

Hyeonjin Bang, Byungjun Park, Kiri Lee, Byungyeon Kim, Minsuk Lee, Sungjun Hong, Seungrag Lee

Proceedings Volume 11484, 114840L (2020) https://doi.org/10.1117/12.2566090

KEYWORDS: Endoscopy, Luminescence, Tissue optics, Fiber optics, Optical imaging, Imaging systems, Fiber optic illuminators, In vivo imaging, Lens design

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Proceedings Article | 22 July 2019 Paper

A fiber based in vitro optical signal diagnosis technique for interspecies transmissibility

Hyun Jin Bang, Seung Rag Lee, Byung Yeon Kim, Kiri Lee, Minsuk Lee, Sung Jun Hong, Yong Shin, Byung Jun Park

Proceedings Volume 11075, 110751I (2019) https://doi.org/10.1117/12.2526937

KEYWORDS: Signal detection, Optical fibers, Optics manufacturing, In vitro testing, Diagnostics, Optical sensing, Biomedical optics, Optical testing, Laser sources, Polarization

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Proceedings Article | 20 February 2019 Paper

Cancer discrimination based on real-time AMD (Analog Mean-Delay)-FLIM (Fluorescence Lifetime Imaging Microscopy)

Jooran Lee, Byungyeon Kim, Byungjun Park, Youngjae Won, Seungrag Lee

Proceedings Volume 10885, 1088514 (2019) https://doi.org/10.1117/12.2506844

KEYWORDS: Luminescence, Sodium, Cancer, Tissues, Fluorescence lifetime imaging, Analog electronics, Microscopy, Confocal microscopy, Tumors, Mirrors

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Proceedings Article | 3 March 2017 Paper

Design of ultra-compact optical system for disposable epidural spinal endoscope

Hyeon Jin Bang, Byung Jun Park, Byung Yeon Kim, Young Jae Won, Seungrag Lee

Proceedings Volume 10055, 100550V (2017) https://doi.org/10.1117/12.2253524

KEYWORDS: Stray light, Optical design, Endoscopes, Aspheric lenses, Modulation transfer functions, Data transmission, Distortion, Biomedical optics, Light scattering, Scattering, Lens design, Transmittance

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Proceedings Article | 21 February 2017 Paper

The study on the parallel processing based time series correlation analysis of RBC membrane flickering in quantitative phase imaging

Minsuk Lee, Youngjae Won, Byungjun Park, Seungrag Lee

Proceedings Volume 10074, 100741T (2017) https://doi.org/10.1117/12.2253458

KEYWORDS: Parallel processing, Phase imaging, Parallel computing, Data processing, Blood, Fractal analysis, Analytical research, Temporal resolution, Microscopy, Algorithm development, Diagnostics

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Proceedings Article | 16 February 2017 Paper

Referencing techniques for high-speed confocal fluorescence lifetime imaging microscopy (FLIM) based on analog mean-delay (AMD) method

Byungyeon Kim, Minsuk Lee, Byungjun Park, Seungrag Lee, Youngjae Won

Proceedings Volume 10068, 100681Z (2017) https://doi.org/10.1117/12.2253440

KEYWORDS: Confocal microscopy, Fluorescence lifetime imaging, Analog electronics, Luminescence, Picosecond phenomena, Microscopy, Molecules, Time correlated photon counting, Single photon, Temporal resolution, Data acquisition, Mirrors, Tissues, Laser sources

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Proceedings Article | 9 March 2016 Paper

The study on RBC characteristic in paroxysmal nocturnal hemoglobinuria (PNH) patients using common path interferometric quantitative phase microscopy

Byung Jun Park, Youngjae Won, Byungyeon Kim, Seungrag Lee

Proceedings Volume 9718, 971819 (2016) https://doi.org/10.1117/12.2210873

KEYWORDS: Microscopy, Interferometry, Phase interferometry, Blood, Proteins, Tissues, Phase imaging, Edge detection, 3D image processing, Phase measurement, Image acquisition

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Proceedings Article | 7 March 2016 Paper

A study on the efficiency improvement of a single fiber guided illumination system for disposable flexible endoscope (DFE)

Hyeon Jin Bang, Byung Jun Park, Young Jae Won, Seungrag Lee

Proceedings Volume 9702, 970214 (2016) https://doi.org/10.1117/12.2212402

KEYWORDS: Phase only filters, Polishing, Light emitting diodes, Optical design, Endoscopes, Polymer optical fibers, Device simulation, Optical fibers, Sensors, Light sources, Endoscopy, Receivers

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Proceedings Article | 7 March 2016 Paper

A study on the characteristics of the Analog Mean Delay (AMD) method for high-speed Fluorescence Lifetime Imaging Microscopy (FLIM)

Byungyeon Kim, Byungjun Park, Seungrag Lee, Youngjae Won

Proceedings Volume 9720, 972014 (2016) https://doi.org/10.1117/12.2209468

KEYWORDS: Fluorescence lifetime imaging, Microscopy, Analog electronics, Confocal microscopy, Monte Carlo methods, Calcium, Molecules, Linear filtering, Signal to noise ratio, Signal detection, Data acquisition, Signal generators

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SPIE Journal Paper | 1 July 2011 Open Access

Detrended fluctuation analysis of membrane flickering in discocyte and spherocyte red blood cells using quantitative phase microscopy

Seungrag Lee, Ji Yong Lee, Chang-Soo Park, Dug Young Kim

JBO, Vol. 16, Issue 07, 076009, (July 2011) https://doi.org/10.1117/12.10.1117/1.3601460

KEYWORDS: Fractal analysis, Microscopy, Blood, Biological research, Motion analysis, Statistical analysis, Acquisition tracking and pointing, Imaging systems, Shape analysis, Spherical lenses

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SPIE Journal Paper | 1 March 2011 Open Access

Dynamic analysis of pathogen-infected host cells using quantitative phase microscopy

Seungrag Lee, Ji Yong Lee, Chang-Soo Park, Young Ran Kim, Joon Haeng Rhee, Dug Young Kim

JBO, Vol. 16, Issue 03, 036004, (March 2011) https://doi.org/10.1117/12.10.1117/1.3548882

KEYWORDS: Microscopy, Pathogens, Biological research, Charge-coupled devices, Microelectromechanical systems, Plasma, Quantitative analysis, Cell death, Statistical analysis, Error analysis

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Proceedings Article | 11 February 2011 Paper

The study of the correlation properties on RBC flickering using double-path interferometric quantitative phase microscopy

Seungrag Lee, Ji Yong Lee, Chang-Soo Park, Dug Young Kim

Proceedings Volume 7902, 79021U (2011) https://doi.org/10.1117/12.874100

KEYWORDS: Microscopy, Charge-coupled devices, Fractal analysis, Blood, Interferometry, Phase interferometry, Refractive index, Interferometers, Phase imaging, Time metrology

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SPIE Journal Paper | 1 July 2010 Open Access

Silver nanoparticle-induced degranulation observed with quantitative phase microscopy

Wenzhong Yang, Seungrag Lee, Jiyong Lee, Yoon Sung Bae, Dug-Young Kim

JBO, Vol. 15, Issue 04, 045005, (July 2010) https://doi.org/10.1117/12.10.1117/1.3470104

KEYWORDS: Calcium, Microscopy, Luminescence, Silver, Charge-coupled devices, Imaging systems, Live cell imaging, Microscopes, Image resolution, Optical microscopes

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Proceedings Article | 25 February 2010 Paper

Dynamic phase imaging of host cells attacked by vibrio vulnificus using quantitative phase microscopy

Seungrag Lee, Wenzhong Yang, Ji Yong Lee, Mi Hye Cha, Young Ran Kim, Dug Young Kim

Proceedings Volume 7568, 756808 (2010) https://doi.org/10.1117/12.843057

KEYWORDS: Microscopy, Pathogens, Charge-coupled devices, Digital holography, Edge detection, Biological research, Phase imaging, Plasma, Microelectromechanical systems, Holography

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Proceedings Article | 18 February 2010 Paper

Silver nanoparticle-induced degranulation observed with quantitative phase microscopy

Wenzhong Yang, Seungrag Lee, Jiyong Lee, Yoonsung Bae, Dugyoung Kim

Proceedings Volume 7575, 757515 (2010) https://doi.org/10.1117/12.842925

KEYWORDS: Microscopy, Calcium, Silver, Luminescence, Biomedical optics, Charge-coupled devices, Electron microscopy, Phase contrast, Digital image correlation, Visualization

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Proceedings Article | 13 February 2010 Paper

Three-dimensional single particle tracking using off-axis digital holographic microscopy

Yoonsung Bae, Seungrag Lee, Wenzhong Yang, Dug Kim

Proceedings Volume 7574, 757408 (2010) https://doi.org/10.1117/12.842882

KEYWORDS: 3D image reconstruction, Particles, Digital holography, Microscopy, Holography, Holograms, Image sensors, Microscopes, Digital imaging, Reconstruction algorithms

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Proceedings Article | 13 February 2009 Paper

Optical property of red blood cell with a phase microscopy interferometer

Ji Yong Lee, Seungrag Lee, Wenzhong Yang, Dug Young Kim

Proceedings Volume 7182, 71821X (2009) https://doi.org/10.1117/12.809772

KEYWORDS: Blood, Microscopy, Interferometers, Oscillators, Temporal coherence, Optical spheres, Motion models, Optical properties, Phase interferometry, Proteins

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Proceedings Article | 12 February 2009 Paper

The measurement of red blood cell volume induced by Ca2+ based on full field quantitative phase microscopy

Seungrag Lee, Ji Yong Lee, Wenzhong Yang, Dug Young Kim

Proceedings Volume 7182, 71821P (2009) https://doi.org/10.1117/12.809157

KEYWORDS: Microscopy, Blood, Charge-coupled devices, Edge detection, Phase measurement, Binary data, Digital holography, Refractive index, Optical testing, Luminescence

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Proceedings Article | 20 February 2007 Paper

Simple chromatic dispersion measurement method using a spectral interferometer

J. Y. Lee, I. H. Shin, S. R. Lee, Tau. Wei, D. Y. Kim

Proceedings Volume 6469, 646911 (2007) https://doi.org/10.1117/12.699955

KEYWORDS: Dispersion, Optical fibers, Interferometers, Light sources, Optical components, Interferometry, Polarization, Colorimetry, Phase shifts, Optical testing

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Proceedings Article | 14 February 2007 Paper

Measurement of relative phase distribution of onion epidermal cells by using the polarization microscope

In Hee Shin, Ji Yong Lee, Seungrag Lee, Dong Ju Lee, Dug Young Kim

Proceedings Volume 6443, 644317 (2007) https://doi.org/10.1117/12.699785

KEYWORDS: Phase measurement, Polarization, Microscopes, Birefringence, Tissues, Polarizers, 3D image processing, CCD cameras, 3D metrology, Biological research

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Proceedings Article | 4 October 2006 Paper

Generation of optical lattice and trapping particle using DMD-ALP

Seung Rag Lee, Jun Ki Kim, Young Jae Won, Kyunghwan Oh

Proceedings Volume 6351, 63512A (2006) https://doi.org/10.1117/12.691248

KEYWORDS: Optical tweezers, Digital micromirror devices, Control systems, Particles, Microscopes, Aluminium phosphide, Optical arrays, Charge-coupled devices, Mirrors, Iris

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Proceedings Article | 3 October 2006 Paper

Application of DMD-ALP in evaluation of optical fiber bundle

Youngjae Won, Seungrag Lee, Kyunghwan Oh

Proceedings Volume 6351, 63511F (2006) https://doi.org/10.1117/12.691495

KEYWORDS: Digital micromirror devices, Image quality, Image transmission, Optical fibers, Aluminium phosphide, Fiber optics, Image analysis, Mirrors, Digital imaging, Light sources

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Showing 5 of 22 publications

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