1. Cheng-Kuang Lee

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    1. Mentioned In 23 Articles

    2. Optical coherence tomography-guided laser microsurgery for blood coagulation with continuous-wave laser diode

      Optical coherence tomography-guided laser microsurgery for blood coagulation with continuous-wave laser diode
      Blood coagulation is the clotting and subsequent dissolution of the clot following repair to the damaged tissue. However, inducing blood coagulation is difficult for some patients with homeostasis dysfunction or during surgery. In this study, we proposed a method to develop an integrated system that combines optical coherence tomography (OCT) and laser microsurgery for blood coagulation. Also, an algorithm for positioning of the treatment location from OCT images was developed ...
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    3. Investigation of temporal vascular effects induced by focused ultrasound treatment with speckle-variance optical coherence tomography

      Investigation of temporal vascular effects induced by focused ultrasound treatment with speckle-variance optical coherence tomography
      Focused ultrasound (FUS) can be used to locally and temporally enhance vascular permeability, improving the efficiency of drug delivery from the blood vessels into the surrounding tissue. However, it is difficult to evaluate in real time the effect induced by FUS and to noninvasively observe the permeability enhancement. In this study, speckle-variance optical coherence tomography (SVOCT) was implemented for the investigation of temporal effects on vessels induced by FUS treatment ...
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    4. Mirror image suppression method

      Mirror image suppression method
      A mirror image suppression method adapted to an optical coherence tomography (OCT) system is provided. The mirror image suppression method includes the following steps: obtaining a tomography image of an object to be tested by using the OCT system; calculating one real image signal obtained from an n.sup.th specific-mode scan for a specific pixel of the tomography image based on image signals obtained from an (n-1).sup.th ...
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    5. Quantitative observation of focused-ultrasound-induced vascular leakage and deformation via fluorescein angiography and optical coherence tomography

      Quantitative observation of focused-ultrasound-induced vascular leakage and deformation via fluorescein angiography and optical coherence tomography
      ...ntially effective for monitoring the outcome and investigating the effects of FUS treatment. Meng-Tsan Tsai ; Cheng-Kuang Lee ; Kung-Min Lin ; Yu-Xiang Lin ; Tzu-Han Lin, et al. "Quantitative observation of focused-ultra...
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    6. Evaluation of Moisture-Related Attenuation Coefficient and Water Diffusion Velocity in Human Skin Using Optical Coherence Tomography

      Evaluation of Moisture-Related Attenuation Coefficient and Water Diffusion Velocity in Human Skin Using Optical Coherence Tomography
      In this study, time-resolved optical coherence tomography (OCT) scanning images of the process of water diffusion in the skin that illustrate the enhancement in the backscattered intensities due to the increased water concentration are presented. In our experiments, the water concentration in the skin was increased by soaking the hand in water, and the same region of the skin was scanned and measured with the OCT system and a commercial ...
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    7. Diagnosis of oral precancer with optical coherence tomography

      Diagnosis of oral precancer with optical coherence tomography
      A procedure for computer analyzing an optical coherence tomography (OCT) image of normal and precancerous oral mucosae is demonstrated to reasonably plot the boundary between epithelium (EP) and lamina propria (LP) layers, determine the EP thickness, and estimate the range of dysplastic cell distribution based on standard deviation (SD) mapping. In this study, 54 normal oral mucosa, 39 oral mild dysplasia, and 44 oral moderate dysplasia OCT images are processed ...
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    8. Method for analyzing mucosa samples with optical coherence tomography

      Method for analyzing mucosa samples with optical coherence tomography
      A method for analyzing mucosa structure with optical coherence tomography (OCT) is provided, and includes: (a) scanning a mucosa sample with optical coherence tomography; (b) choosing a lateral range from a two- or three-dimensional OCT image and analyzing all the A-scan intensity profiles in the lateral range; (c) calculating three indicators in each A-scan intensity profile, including the standard deviation for a certain depth range below the sample surface, the ...
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    9. Microvascular Imaging Using Swept-Source Optical Coherence Tomography with Single-Channel Acquisition

      Microvascular Imaging Using Swept-Source Optical Coherence Tomography with Single-Channel Acquisition
      This study proposes a new approach to improve the phase stability for swept-source optical coherence tomography (SS-OCT) with single-channel acquisition. This approach can improve the phase instability due to the A-scan trigger jitter from the swept source, or the asynchronization between the A-scan trigger and high-speed digitizer, which enables the visualization of vascular structures by SS-OCT. Aside from reducing the phase noise of the OCT system, only one channel is ...
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    10. Feature Of The Week 5/15/11: Researchers from Chang Gung University use OCT for NDE of Indium Tin Oxide Conducting Glass used in Display and Other Technologies

      Feature Of The Week 5/15/11: Researchers from Chang Gung University use OCT for NDE of Indium Tin Oxide Conducting Glass used in Display and Other Technologies
      Indium tin oxide (ITO) is one of the most common conducting oxides used on glass substrates due to the electrical conductivity and optical transparency. Indium tin oxide conducting glass has been widely used for industrial products such as display technologies, circuit substrates, and antennas for mobile communication. Defects in ITO glass fundamentally influence its physical properties, such as electrical conductivity, optical transparency, and the spreading length of injected carriers, all ...
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    11. Observations of cardiac beating behaviors of wild-type and mutant Drosophilae with optical coherence tomography

      Observations of cardiac beating behaviors of wild-type and mutant Drosophilae with optical coherence tomography
      Time-resolved optical coherence tomography (OCT) scanning images of wild-type and mutant fruit flies (Drosophila melanogaster), illustrating the heartbeat patterns for evaluating their cardiac functions, are demonstrated. Based on the heartbeat patterns, the beat rate and the relative phase between the first two heart segments can be evaluated. The OCT scanning results of mutant flies with impaired proteasome function in cardiac muscles show irregular heartbeat patterns and systematically decreased average beat ...
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    12. 1-15 of 23 1 2 »
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  2. About Cheng-Kuang Lee

    Cheng-Kuang Lee is with the Institute of Photonics and Optoelectronics at National Taiwan University.