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Automated 3D Optical Coherence Tomography to Elucidate Biofilm Morphogenesis Over Large Spatial Scales
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Early detection of cardiac allograft vasculopathy using highly automated 3-dimensional optical coherence tomography

Michal Pazdernik1, Zhi Chen2, Helena Bedanova3

  • 1Department of Cardiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic; Department of Cardiology, Second Medical School, Charles University, University Hospital Motol, Prague, Czech Republic.

The Journal of Heart and Lung Transplantation : the Official Publication of the International Society for Heart Transplantation
|May 1, 2018
PubMed

Insights

This study introduces a new 3D OCT analysis for cardiac allograft vasculopathy (CAV) in heart transplant recipients. The method quantifies early CAV changes, showing significant luminal reduction and intimal thickening within the first year post-transplant.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Transplantation Medicine

Background:

  • Existing Optical Coherence Tomography (OCT) studies for cardiac allograft vasculopathy (CAV) primarily use qualitative, frame-based analysis.
  • The full quantitative potential of 3D OCT imaging for assessing CAV remains largely unexploited.

Purpose of the Study:

  • To develop and validate a novel, highly automated 3D OCT image analysis method for quantifying early CAV changes.
  • To assess the progression of CAV within the first 12 months after heart transplantation (HTx) using this new quantitative method.

Main Methods:

  • Coronary OCT imaging was performed on 50 heart transplant (HTx) patients at 1 month and 12 months post-transplant.
  • A proprietary, highly automated 3D graph-based optimal segmentation software was used for analyzing OCT data.
  • A "just-enough-interaction" approach facilitated efficient correction of segmentation errors.

Main Results:

  • Significant reduction in mean luminal area (p = 0.028) and progression in mean intimal thickness (p = 0.001) were observed within the first post-transplant year.
  • Early CAV changes were more pronounced in the proximal segments of coronary arteries (p < 0.001).
  • High LDL cholesterol (p = 0.02) and total cholesterol (p = 0.031) levels within the first month post-HTx were associated with early CAV development.

Conclusions:

  • The developed automated 3D OCT analysis method provides fast, accurate, and detailed quantitative data on early CAV.
  • This method effectively captures early CAV progression, characterized by luminal narrowing and intimal thickening within 12 months post-HTx.
Abstract

Keywords:
OCTcardiac allograft vasculopathycholesterolintimal thicknessrapid progression

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