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Published on: January 15, 2022
3D modeling of coronary artery bifurcations from CTA and conventional coronary angiography
Rubén Cárdenes1, Jose Luis Díez, Ignacio Larrabide
1Center for Computational Imaging & Simulation Technologies in Biomedicine, (CISTIB) - Universitat Pompeu Fabra and CIBER-BBN, Barcelona, Spain.
Insights
This study presents a new method for creating 3D models of coronary artery bifurcations using CT angiography and conventional angiography. This aids in analyzing complex plaque buildup and improving stenting procedures.
Area of Science:
- Cardiovascular Imaging
- Medical Device Technology
- Biomedical Engineering
Background:
- Coronary artery bifurcations are prone to atherosclerosis and challenging for percutaneous coronary interventions.
- Accurate 3D modeling of these regions is crucial for effective treatment planning and analysis.
- Existing methods may lack the precision needed for complex bifurcation geometries.
Purpose of the Study:
- To develop a semi-automatic method for generating realistic 3D models of coronary bifurcations.
- To combine data from computed tomography angiography (CTA) and conventional coronary angiography (CCA) for enhanced accuracy.
- To improve the analysis of lumen radius changes before and after stenting in bifurcations.
Main Methods:
- A semi-automatic approach utilizing user-defined landmarks.
- Integration of pre-operative CTA for 3D vessel structure.
- Incorporation of pre- and post-operative CCA for precise lumen radius estimation.
- Application to patient data undergoing endovascular bifurcation treatment.
Main Results:
- Successful generation of realistic 3D models for five patient cases.
- Accurate estimation of lumen radius before and after stenting.
- Satisfactory results confirmed by visual inspection.
- Positive comparison with manual measurement data.
Conclusions:
- The proposed method effectively creates detailed 3D models of coronary bifurcations.
- This technique enhances the analysis of percutaneous treatments in complex vascular regions.
- The approach offers a valuable tool for understanding and treating bifurcation atherosclerosis.
Abstract:
Coronary artery bifurcations are regions where the atherosclerotic plaque appears more frequently and where the percutaneous treatment is more challenging. To analyze these important vascular regions, in this paper is proposed a method for the extraction of realistic 3D models of coronary bifurcations combining information from pre operative computer tomography angiography (CTA) to obtain the 3D structure of the vessels and pre and post operative conventional coronary angiography (CCA) to extract a more accurate estimation of the lumen radius before and after stenting. The method proposed is semiautomatic, starting from a set of user defined landmarks, and has been successfully applied to data from five patients that underwent endovascular treatment in a coronary bifurcation. The results obtained are satisfactory by visual inspection and in comparison with manual measurements.
