ultrasonic examination 基本例句 超声波检查 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。 cnki