Purpose The development of the high-resolution B-mode ultrasound technique has provided a noninvasive way for the study of early changes of atherosclerosis by the measurement of intima media thickness (IMT) in the carotid artery and the femoral artery.

• 目的：高分辨力B型超声技术检测的颈动脉和股动脉的内膜中层厚度(intima media thickness IMT)能够无创性地研究动脉粥样硬化的早期改变。