1. Articles from Peng Wu

    1-2 of 2
    1. Automatic stent reconstruction in optical coherence tomography based on a deep convolutional model

      Automatic stent reconstruction in optical coherence tomography based on a deep convolutional model

      Intravascular optical coherence tomography (IVOCT) can accurately assess stent apposition and expansion, thus enabling the optimisation of a stenting procedure to minimize the risk of device failure. This paper presents a deep convolutional based model for automatic detection and segmentation of stent struts. The input of pseudo-3D images aggregated the information from adjacent frames to refine the probability of strut detection. In addition, multi-scale shortcut connections were implemented to minimize the loss of spatial resolution and refine the segmentation of strut contours. After training, the model was independently tested in 21,363 cross-sectional images from 170 IVOCT image pullbacks. The ...

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    2. Diagnostic accuracy and reproducibility of optical flow ratio for functional evaluation of coronary stenosis in a prospective series

      Diagnostic accuracy and reproducibility of optical flow ratio for functional evaluation of coronary stenosis in a prospective series

      Background: Evaluating prospectively the feasibility, accuracy and reproducibility of optical flow ratio (OFR), a novel method of computational physiology based on optical coherence tomography (OCT). Methods and results: Sixty consecutive patients (76 vessels) underwent prospectively OCT, angiography-based quantitative flow ratio (QFR) and fractional flow ratio (FFR). OFR was computed offline in a central core-lab by analysts blinded to FFR. OFR was feasible in 98.7% of the lesions and showed excellent agreement with FFR (ICCa = 0.83, r = 0.83, slope = 0.80, intercept = 0.17, kappa = 0.84). The area under curve to predict an FFR ≤ 0.80 was ...

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    1-2 of 2
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  2. Topics in the News

    1. (2 articles) Shengxian Tu
    2. (1 articles) National University of Ireland, Galway
    3. (1 articles) Shanghai Jiao Tong University
    4. (1 articles) Juan Luis Gutiérrez-Chico
    5. (1 articles) Thomas Jefferson University
    6. (1 articles) Massachusetts General Hospital
    7. (1 articles) Polytechnique Montreal
    8. (1 articles) Wakayama Medical University
    9. (1 articles) Masamichi Takano
    10. (1 articles) Carol L. Shields
    11. (1 articles) Ik-Kyung Jang
    12. (1 articles) Theo Lasser
    13. (1 articles) Christoph Hauger
    14. (1 articles) Carl Zeiss Meditec
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