Study On Hypertension Patients With Carotid Atherosclerosis Plaque Stability Assessment Of Velocity Vector Imaging

Objective Using velocity vector imaging in patients with hypertension and non hypertension patients with carotid atherosclerosis plaque total motion characteristics and mechanical characteristics, to investigate whether there are differences in the stability of carotid plaque in patients with hypertension and non hypertension patients.Methods A retrospective analysis of velocity vector imaging data of93cases of patients with carotid atherosclerotic plaque, including51cases of patients with primary hypertension and the other42cases of normal, carotid artery intima media thickness (IMT) were measured; the application of velocity vector imaging (VVI) technique to detect carotid atherosclerotic plaque base, shoulder the fibrous cap, at the top of the velocity, strain rate, using the chi square test group for comparative analysis.Results95plaques were detected in the hypertension group with51patients including52hard plaques and43soft plaques;for non hypertension group.76plaques were detected in42patients. including41hard plaques.35soft plaques, hypertension carotid soft plaque shoulder proximal, maximum velocity, the top the systolic strain rate is higher than the non hypertension group, the difference was statistically significant (P<0.05or P<0.01). and soft plaque shoulder distal end. basal systolic maximum velocity, maximum strain rate and non hypertension group the difference was not statistically significant (P>0.05); hypertension carotid hard plaque the proximal, distal end, top,basal systolic maximum velocity, maximum strain rate slightly higher than the non hypertension group, the difference was not statistically significant (P>0.05).Conclusion velocity vector imaging technique can be used to analysis different parts of velocity, strain and strain rate of hypertension patients with carotid atherosclerosis and plaque, and provides a new method for the evaluation of the stability of carotid plaque; carotid artery soft plaque stability in patients with hypertension was lower than that in non hypertensive patients, and hard plaque stability in patients were not significantly different between the two groups...