3-D registration on carotid artery imaging data: MRI for different timesteps

Area of Science:

• Medical Imaging
• Biomedical Engineering
• Radiology

Background:

• Accurate registration of carotid artery imaging across modalities and time is crucial but challenging.
• The 'Patient Position' DICOM field is insufficient for precise carotid artery registration due to its small size and sensitivity to minor position changes.
• Existing literature often analyzes carotid geometry without registration or uses varied techniques, hindering objective comparison.

Purpose of the Study:

• To develop and present a method for statistically evaluating the impact of different registration techniques on carotid artery geometry.
• To address the lack of objective comparison methods for various carotid artery registration techniques.
• To quantify the statistical significance of registration technique choice on carotid geometry.

Main Methods:

• A novel method was developed to estimate the statistical significance of registration technique choice on carotid geometry.
• One-Way Analysis of Variance (ANOVA) was employed for statistical analysis.
• Distances between the carotid lumen and the centerline were measured for both right and left carotids.

Main Results:

• One-Way ANOVA revealed statistically significant differences (p-value < 0.0001) in lumen-centerline distances.
• The choice of registration technique significantly impacts the measured geometry of both right and left carotid arteries.
• The studied patient case demonstrated the sensitivity of carotid geometry measurements to registration methods.

Conclusions:

• The choice of registration technique significantly influences the analysis of carotid artery geometry.
• The developed method provides a statistically sound approach to compare different registration techniques.
• This work highlights the importance of selecting and validating registration methods in carotid imaging research.