关键词: 颈动脉斑块; 应变成像; 超声; 运动

Abstract:

Objective To investigate the effect of resistance index of X-strain imaging (XS) in evaluating carotid plaque motility. Methods A total of 49 patients with carotid atherosclerotic plaque formation were selected for XS from March 2015 to June 2016. And the patients were divided into high-resistance index group and low-resistance index group according to the internal artery blood flow resistance index. The strain and movement characteristics of carotid plaques were compared in different positions between the two groups. Results There was no significant difference in carotid plaque size between the high-resistance index group and low-resistance index group. The movement of the plaque in the high-resistance index group was more obvious than the low resistance index group. The difference between the two group at the top of the plaque was statistically significant (P <0.05). There was no statistically significant difference between the movement of plaque in proximal part and the distal part (P >0.05). Conclusion Resistance index could affect carotid plaque movement. The plaque movement became more obvious when resistance index increased.

Key words: Carotid plaque; X-strain imaging; Ultrasound; Movement