1. Articles from Lambros Athanasiou

    1-3 of 3
    1. Optimized Automated Segmentation and 3D Reconstruction Using Intracoronary Optical Coherence Tomography

      Optimized Automated Segmentation and 3D Reconstruction Using Intracoronary Optical Coherence Tomography

      Real time segmentation and three-dimensional (3D) reconstruction of the coronary arteries is challenging and limited by the increased computational time of the developed computer-aided methods. We present a novel and time-efficient method for intracoronary lumen detection which produces 3D coronary arteries using Optical Coherence Tomographic (OCT) images. OCT images are acquired for multiple patients and longitudinal cross-section (LOCS) images are reconstructed using different acquisition angles. The lumen contours for each LOCS image are extracted and translated to 2D cross-sectional images. Using two angiographic projections the centerline of the coronary vessel is reconstructed in 3D and the detected 2D contours are ...

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    2. Optimized computer-aided segmentation and 3D reconstruction using intracoronary optical coherence tomography

      Optimized computer-aided segmentation and 3D reconstruction using intracoronary optical coherence tomography

      We present a novel and time-efficient method for intracoronary lumen detection which produces three-dimensional (3D) coronary arteries using Optical Coherence Tomographic (OCT) images. OCT images are acquired for multiple patients and longitudinal cross-section (LOCS) images are reconstructed using different acquisition angles. The lumen contours for each LOCS image are extracted and translated to 2D cross-sectional images. Using two angiographic projections the centerline of the coronary vessel is reconstructed in 3D and the detected 2D contours are transformed to 3D and placed perpendicular to the centerline. To validate the proposed method, 613 manual annotations from medical experts were used as gold ...

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    3. Currently available methodologies for the processing of intravascular ultrasound and optical coherence tomography images

      Currently available methodologies for the processing of intravascular ultrasound and optical coherence tomography images

      Optical coherence tomography and intravascular ultrasound are the most widely used methodologies in clinical practice as they provide high resolution cross-sectional images that allow comprehensive visualization of the lumen and plaque morphology. Several methods have been developed in recent years to process the output of these imaging modalities, which allow fast, reliable and reproducible detection of the luminal borders and characterization of plaque composition. These methods have proven useful in the study of the atherosclerotic process as they have facilitated analysis of a vast amount of data. This review presents currently available intravascular ultrasound and optical coherence tomography processing methodologies ...

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    1-3 of 3
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  2. Topics in the News

    1. (5 articles) National Institutes of Health
    2. (2 articles) University of São Paulo
    3. (1 articles) Erasmus University
    4. (1 articles) Massachusetts Institute of Technology
    5. (1 articles) University of Ioannina
    6. (1 articles) Christos V. Bourantas
    7. (1 articles) University of Houston
    8. (1 articles) University of Minnesota
    9. (1 articles) Indiana University
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    11. (1 articles) Massachusetts Institute of Technology
    12. (1 articles) James G. Fujimoto
    13. (1 articles) Taner Akkin
    14. (1 articles) Donald T. Miller
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