Related Experiment Video
Updated: Jul 2, 2025
Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
Published on: August 28, 2018
Morphological Correlation between the Diameters of the Left Main Coronary Artery and its Branches Measured by QCA and
1Department of Basic Medical Sciences, College of Medicine, University of Bisha, Bisha 61922. P.O Box 551, Bisha, Saudi Arabia.
Insights
Coronary artery diameters measured by QCA and Finet's law show significant differences, though they are positively associated. Finet's law can aid stent selection, but further studies are needed for broader application.
Area of Science:
- Cardiovascular Medicine
- Medical Imaging
- Biomedical Engineering
Background:
- Coronary artery disease (CAD) is a leading global cause of mortality.
- Accurate coronary artery morphology, including luminal diameters, is crucial for interventional procedures like stenting and angioplasty.
Purpose of the Study:
- To compare left main coronary artery (LM) and its branch diameters measured by Quantitative Coronary Angiography (QCA) with those predicted by Finet's law.
- To evaluate the clinical utility of Finet's law in interventional cardiology.
Main Methods:
- A retrospective analysis of 357 angiograms was conducted.
- Diameters of the left main coronary artery (LM1), left anterior descending artery (LAD1), and left circumflex artery (LCx1) were measured using QCA.
- Finet's law was applied to calculate corresponding diameters (LM2, LAD2, LCx2) based on QCA measurements.
Main Results:
- Mean LM diameter by QCA was 3.75±0.85 mm, while Finet's law yielded 3.89±0.80 mm.
- QCA-measured diameters for LAD and LCx were larger than those calculated by Finet's law.
- Significant differences were observed between QCA and Finet's law measurements for LM, LAD, and LCx, despite positive associations.
Conclusions:
- A significant association exists between QCA and Finet's law measurements for LM, LAD, and LCx diameters.
- Finet's law can be a valuable tool for guiding stent size selection in coronary interventions.
- Further research across diverse ethnicities is recommended to validate the generalizability of Finet's law.
Background:
Coronary artery diseases are the leading cause of death worldwide. Stenting or angioplasty of coronary arteries as interventional management requires knowledge about the morphology of the coronary tree, including luminal diameters.
Objective:
This work aimed to study the diameters of the left main coronary artery and its branches measured by QCA in relation to the diameters derived by Finet's law.
Methods:
This was a cross-sectional, retrospective, hospital-based study. The number of angiograms used was 357. The diameters of the left main coronary artery (LM1), left anterior interventricular artery (LAD1), and left circumflex artery (LCx1) were measured by QCA. The diameter of LM1 was measured by 5 mm before its termination, and the diameters of LAD1 and LCx1 were obtained by 5 mm from their origins. Finet's law was used to calculate the diameters of LM2, LAD2 and LCx2 using the QCA measurements.
Results:
The mean age of participants was 53.3±8.8 years. Female patients represented 58.9%. The mean diameter of the left main coronary using QCA was 3.75±0.85 mm, and the diameter calculated using Finet's law was 3.89±0.80 mm. The diameters of LAD1 and LCx1 were larger than those calculated with Finet's law. The Z-test showed a significant difference between the diameter of the LM1 calculated by Finet's law; both diameters were positively associated. The diameters of LAD1 and LAD2 showed a non-significant correlation (r = 0.0653, P = 0.259526) and a negative correlation between LCx1 and LCX2 (r = -0.2659, P = 0.00001). The Z-test showed a significant difference in the diameter of LAD and LCx measured by QCA and Finet's law.
Conclusion:
An association was found between the diameter of LM measured by QCA and calculated with Finet's law; the diameter calculated by Finet's law was larger. The diameters of LAD and LCx measured by QCA were larger than those calculated by Finet's law. A positive correlation existed between the diameters measured by QCA and Finet's law, and they had significant differences. Finet's law can assist in the selection of stent size. Despite the literature about Finet's law, generalising its use requires more studies on different ethnicities.
