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Advanced 3D QCA assessment of bifurcation lesions.


European Bifurcation Club 2013, EBC 2013 – London, UK


Advanced 3D QCA assessment of bifurcation lesions

AuthorChrysafios Girasis, MD, Onassis Cardiac Surgery Center Athens, Greece


Benefits of 3D QCA vs. 2D QCA

  • Elimination of foreshortening-overlap
  • Elimination of out-of-plane magnification
  • Highly accurate length, cross-sectional area and bifurcation angle measurements
  • Identification of optimal viewing angle


  • 3D bifurcation reconstruction feasible and time-efficient for ≥2 2D images
  • CAAS 3D 5.11 features full automatic calibration, reliability analysis and indicates the optimal viewing projection
  • It features novel, accurate and precise 3-D quantitative analysis of bifurcation lesions for diameter (multiple segment models), length and bifurcation angle measures.
  • Adding the optimal projection to a basic reconstruction of two suboptimal 2-D images results in higher accuracy and precision for MLD and DS values.
  • There is still work to be done regarding the in vivo validation of this software, in order to determine the clinical relevance of these data.


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