Coronary arterial geometry: A comprehensive comparison of two imaging modalities

Area of Science:

• Cardiovascular Imaging
• Medical Diagnostics
• Biomedical Engineering

Background:

• Accurate characterization of vascular geometry is crucial for interpreting coronary artery disease (CAD).
• Different imaging modalities offer varying perspectives on coronary vessel morphology.
• Understanding the agreement between these methods is key for reliable clinical assessment.

Purpose of the Study:

• To comprehensively compare coronary vessel geometry derived from coronary computed tomography angiography (CCTA) and intravascular ultrasound (IVUS) with bi-plane angiography (AX).
• To evaluate the agreement and discrepancies in geometric indexes between CCTA and IVUS-AX.
• To assess the reliability of coronary vascular geometry in interpreting geometric risk factors and characterizing CAD.

Main Methods:

• Analysis of 34 coronary vessels from 28 patients with diagnosed coronary artery disease.
• Utilized data from both CCTA and IVUS-AX procedures for each patient.
• Extracted and compared multiple geometric indexes from the vascular geometries obtained by each modality.

Main Results:

• Demonstrated a comprehensive comparison of geometric indexes between CCTA and IVUS-AX.
• Identified areas of agreement and discrepancies in the characterization of vascular geometry.
• Provided insights into the reliability of geometric measurements for risk assessment.

Conclusions:

• Coronary vascular geometry characterization shows agreement between CCTA and IVUS-AX.
• The findings support the use of these modalities for understanding geometric risk factors in CAD.
• Vascular geometry from these techniques can serve as a surrogate for characterizing coronary artery disease.