5.Objective:To study the changing characteristics of intimal plus media thickness (IMT) of carotid arterial wall in middle aged and aged hypertension by means of Color Doppler Ultrasonic examination.

• 目的 :探讨彩色多普勒超声对中老年原发性高血压患者颈动脉内膜 中层厚度 (IMT)改变的特点。