摘要
目的 探讨颈动脉粥样硬化与股动脉粥样硬化的超声诊断标准。方法 根据 12 5例正常健康者颈动脉及股动脉超声图像 ,测量颈动脉及股动脉内径 (D)、颈动脉及股动脉内膜 中膜层厚度 (IMT)、颈动脉及股动脉僵硬度 (β)和最大剪切率 (SRs)。结果 随年龄增加 ,颈动脉及股动脉IMT、D、β呈增加趋势 ,SRs降低 ;正常人颈动脉和股动脉IMT分别为(0 .63± 0 .15 )mm、(0 .68± 0 .2 1)mm ,颈动脉及股动脉IMT上限分别为 0 .93mm、1.11mm。将正常人分为≥ 5 0岁组与 <5 0岁组 ,颈动脉上限分别为 1.0 9mm、0 .85mm ;股动脉上限分别为 1.2 6mm、0 .98mm。结论 正常人颈动脉及股动脉的IMT、血管内径和僵硬度随年龄增加而增加。采用IMT≥ 1.2mm可用于诊断颈动脉及年龄 <5 0岁股动脉粥样硬化斑块 ,对于 5 0岁以上患者 ,股动脉粥样硬化斑块诊断标准取IMT≥ 1.3mm较为合适。
Objective To compare the intima media thickness between the carotid and femoral arteries in normal subjects for establishing diagnostic criteria of atherosclerotic plaque. Methods The intima media thickness (IMT), diameter (D), stiffness β and systolic SRs of the carotid and femoral arteries were measured by high resolution ultrasound. Results In carotid and femoral arteries, IMT, D and β increased with age increased, while SRs decreased. IMT in carotid and femoral arteries was (0.63±0.15)mm and (0.68±0.21)mm respectively,upper limit was 0.93mm and 1.11mm respectively. When the subjects were divided into age≥50 years group and age<50 years group,value of upper limit in carotid IMT were 1.09mm , 0.85mm respectively. Value of upper limit in femoral IMT were 1.26mm and 0.98mm respectively. Conclusion That IMT≥1.2mm is defined as plaque is suitable to carotid artery or femoral artery with age<50 years. It is more accurate to consider IMT≥1.3mm as a criteria of femoral plaque in age≥50 years.
出处
《中国医学影像技术》
CSCD
2002年第1期32-33,共2页
Chinese Journal of Medical Imaging Technology
基金
卫生部优秀青年人才专项基金资助 (970 37)。
