1. Kyungpook National University

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    1. Mentioned In 24 Articles

    2. Method and device for early non-invasive diagnosis of fruit tree disease

      Method and device for early non-invasive diagnosis of fruit tree disease

      The present invention relates to a non-invasive early diagnostic method and device that allows an early diagnosis of Marssonina blotch disease, which infects apple tree leaves, before the occurrence of lesions to enable early prevention of apple Marssonina blotch disease. The method and device of the present invention comprise the following steps: irradiating a broadband light source on an apple tree leaf undergoing diagnosis by means of optical coherence tomography; detecting interference signals from light reflected from the apple tree leaf undergoing diagnosis and light reflected from a reference arm; signal processing the interference signals, which have been detected through ...

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    3. Stimulated penetrating keratoplasty using real-time virtual intraoperative surgical optical coherence tomography

      Stimulated penetrating keratoplasty using real-time virtual intraoperative surgical optical coherence tomography

      An intraoperative surgical microscope is an essential tool in a neuro- or ophthalmological surgical environment. Yet, it has an inherent limitation to classify subsurface information because it only provides the surface images. To compensate for and assist in this problem, combining the surgical microscope with optical coherence tomography (OCT) has been adapted. We developed a real-time virtual intraoperative surgical OCT (VISOCT) system by adapting a spectral-domain OCT scanner with a commercial surgical microscope. Thanks to our custom-made beam splitting and image display subsystems, the OCT images and microscopic images are simultaneously visualized through an ocular lens or the eyepiece of ...

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    4. Comparison of OCT Measurements between High Myopic and Low Myopic Children

      Comparison of OCT Measurements between High Myopic and Low Myopic Children

      Purpose: To compare the peripapillary retinal nerve fiber layer (RNFL) thickness, macular thickness, and total macular volume of high myopic eyes with those of low myopic eyes in children younger than 10 years. Methods: Prospective, randomized, comparative study. Time-domain optical coherence tomography (OCT) (Stratus OCT; Carl Zeiss Meditec) was performed on 15 children with high myopia (refractive error greater than or equal to -6.0 diopters [D], group 1) and 20 children with low myopia (0 less than refractive error from -0.25 to -3.0 D, group 2). Fast RNFL scan and a fast macular scan with OCT were ...

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    5. Optical coherence tomography for the diagnosis of human otitis media

      Optical coherence tomography for the diagnosis of human otitis media

      We report the application of Optical Coherence Tomography (OCT) to various types of human cases of otitis media (OM). Whereas conventional diagnostic modalities for OM, including standard and pneumatic otoscopy, are limited to visualizing the surface information of the tympanic membrane (TM), OCT is able to effectively reveal the depth-resolved microstructural below the TM with a very high spatial resolution. With the potential advantage of using OCT for diagnosing different types of OM, we examined in-vivo the use of 840 nm wavelength, and OCT spectral domain OCT (SDOCT) techniques, in several human cases including normal ears, and ears with adhesive ...

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    6. Microscope For Monitoring Optical Coherence Tomography

      Microscope For Monitoring Optical Coherence Tomography

      The present invention relates to a microscope for monitoring optical coherence tomography. The microscope includes: a microscope image providing part in which a first object lens, a beam splitter, and an ocular lens are successively disposed from the front surface of a sample support; and an OCT image providing part providing an optical coherent tomography image into the beam splitter of the microscope image providing part after the optical coherent tomography image is generated. The OCT image providing part generates an OCT image having the same position as that of the surface image of a sample to provide the OCT ...

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    7. Dual-modal photoacoustic and optical coherence tomography using a single near-infrared supercontinuum laser source

      Dual-modal photoacoustic and optical coherence tomography using a single near-infrared supercontinuum laser source

      We report the development of a combined dual-modal photoacoustic and optical coherence tomography (PA-OCT) system using a single near-infrared (NIR) supercontinuum laser source which can provide both optical absorption and scattering contrasts simultaneously. By using a small sized pulsed Nd:YAG microchip laser and a photonic crystal fiber, we fabricated a pulsed broadband supercontinuum source from 600 to 1700 nm. Under the same optical hardware system, intrinsically registered PA and OCT images are acquired in a single scanning. In order to demonstrate feasibility of our system, we successfully acquired the PA and OCT images of black and white hairs images ...

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    8. Application of optical coherence tomography to detect Cucumber green mottle mosaic virus (CGMMV) infected cucumber seed

      Application of optical coherence tomography to detect Cucumber green mottle mosaic virus (CGMMV) infected cucumber seed

      Abstract  In this study, we distinguished Cucumber green mottle mosaic virus (CGMMV) infected seeds from healthy seeds using optical coherence tomography (OCT). Two dimensional OCT images and stereo micrographs revealed that the infected seeds had narrow gap between the seed coat and endosperm that were not present in the healthy seeds. Three dimensional OCT images confirmed that the narrow gaps were present in the inner structure of overall the infected seeds. A-scan analysis was also performed to calculate the distance from the seed coat to the endosperm. The results revealed a difference in the width of the gap of about ...

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    9. Investigation of the Performance of Spectral Domain Optical Doppler Tomography with High-speed Line Scanning CMOS Camera and Its Application to the Blood Flow Measurement in a Micro-tube

      Investigation of the Performance of Spectral Domain Optical Doppler Tomography with High-speed Line Scanning CMOS Camera and Its Application to the Blood Flow Measurement in a Micro-tube
      ...ungpook National University Chang-Ho Lee, Jee-Hyun Kim School of Electrical Engineering and Computer Science, Kyungpook National University Jae-Sung Bae Department of Physiology, School of Medicine, Kyungpook National Un...
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    10. 1-15 of 24 1 2 »
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  2. About Kyungpook National University

    Kyungpook National University

    Kyungpook National University (KNU), is a leading national university in Daegu, South Korea. The university is one of 10 Flagship Korean National Universities. It is one of the three best recognized and oldest national universities with Seoul National University and Pusan National University. The university was established in September 1946, succeeding the former Daegu Teacher's College, Daegu Agricultural College, and Daegu Medical College. In 2008, it merged with Sangju National University.