Impact of Flow Rates on Carotid Plaque Progression
Author Information
Author(s): Yang Chun, Canton Gador, Yuan Chun, Ferguson Marina, Hatsukami Thomas S, Tang Dalin
Primary Institution: Beijing Normal University
Hypothesis
How do different flow rates in a cardiac cycle affect the correlation between carotid plaque progression and mechanical stresses?
Conclusion
Advanced plaque progression correlated positively with flow shear stress and negatively with plaque wall stress using follow-up scans.
Supporting Evidence
- 19 out of 32 scan pairs showed a significant positive correlation between wall thickness increase and flow shear stress.
- 26 out of 32 scan pairs showed a significant negative correlation between wall thickness increase and plaque wall stress.
- The correlation results using follow-up scans were more conclusive than those using baseline scans.
Takeaway
This study looked at how blood flow affects the growth of plaque in arteries. It found that higher flow rates are linked to more plaque growth.
Methodology
In vivo serial MRI data were collected from 14 patients, with 32 scan pairs analyzed using 3D computational models to assess correlations between plaque progression and mechanical stresses.
Potential Biases
Potential biases due to the limited number of patients and reliance on MRI data for analysis.
Limitations
The study relied on patient-specific pressure profiles and did not account for individual flow rate data.
Participant Demographics
14 patients (13 male, 1 female; age: 59-81, mean = 71.9) with advanced atherosclerosis.
Statistical Information
P-Value
<0.0001
Confidence Interval
(-0.15, 0.037)
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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