1. Articles from Sungjo Park

    1-2 of 2
    1. Identification of multi-dimensional thread geometry using depth-resolved swept-source optical coherence tomography for assessment of dental implant fabrication

      Identification of multi-dimensional thread geometry using depth-resolved swept-source optical coherence tomography for assessment of dental implant fabrication

      The geometrical characteristics of dental implants, such as thread depth and width, facing angle, pitch, and surface roughness, are important to assess their stability and osseointegration after implant surgery. Herein, we demonstrate the potential use of depth-resolved swept-source optical coherence tomography (SS-OCT) to assess the structural quality of widely used dental implants. The implemented SS-OCT system was centered at a wavelength of 1300 nm with a 100 nm full-width at half-maximum. Four dental implants with different structural formations fabricated using either titanium or ceramic were visualized. Qualitative assessments were performed using boundary flattening with an amplitude-profiling algorithm to emphasize and ...

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    2. Non-destructive identification of weld-boundary and porosity formation during laser transmission welding by using optical coherence tomography

      Non-destructive identification of weld-boundary and porosity formation during laser transmission welding by using optical coherence tomography

      Laser transmission welding offers significant benefits over conventional welding techniques enabling single-stage rapid plastic joining. The quality of laser transmission welded products are commonly assessed by measuring the weld penetration depth, hardened weld boundary, and inspecting the formation of porosity. However, existing methods of verification are inevitably accompanied by destruction of the specimen. Thus, non-destructive quality assessment methods for laser transmission welding have gained attention recently. Here, we demonstrated an extended industrial application of 860 nm wavelength based spectral domain optical coherence tomography for the non-destructive inspection of the aforementioned quality parameters of laser transmission welded industrial plastic materials, i ...

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    1-2 of 2
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  2. Topics in the News

    1. (2 articles) Kyungpook National University
    2. (2 articles) Ruchire Eranga Wijesinghe
    3. (2 articles) Mansik Jeon
    4. (2 articles) Jeehyun Kim
    5. (2 articles) University of Rochester
    6. (1 articles) Centre Hospitalier Intercommunal de Créteil
    7. (1 articles) Mount Sinai School of Medicine
    8. (1 articles) Geunyoung Yoon
    9. (1 articles) Eric H. Souied
    10. (1 articles) Francesco Bandello
    11. (1 articles) Egidijus Auksorius
    12. (1 articles) Maciej Wojtkowski
    13. (1 articles) Giuseppe Querques
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    Non-destructive identification of weld-boundary and porosity formation during laser transmission welding by using optical coherence tomography Identification of multi-dimensional thread geometry using depth-resolved swept-source optical coherence tomography for assessment of dental implant fabrication Procedural and one-year outcomes of patients treated with orbital and rotational atherectomy with mechanistic insights from optical coherence tomography Myocardial Infarction Complicating Vasospastic Angina in a Female Patient—Case Report OCT-A characterisation of recurrent type 3 macular neovascularisation Quantitative Coronary Angiography Can Predict Cardiac Allograft Vasculopathy in Pediatric Heart Transplant Recipients “Virtual Biopsies” of Normal Skin and Thermal and Chemical Burn Wounds Dynamic optical coherence elastography (Thesis) NIR-II dual-modal optical coherence tomography and photoacoustic imaging-guided dose-control cancer chemotherapy The evaluation and correlation of subfoveal choroidal thickness and macular hole apical and basal diameters with enhanced depth imaging optical coherence tomography in patients with idiopathic macular hole In vivo imaging of human cornea with highspeed and high-resolution Fourier-domain full-field optical coherence tomography Open Rank Tenure Track Faculty Position in Retina Research, University of Rochester, Rochester, NY