目前用导管法测量直径为1mm以下的微小血管内的压力还很困难,尤其是对于直径100μm以下的细动脉、细静脉和毛细血管网没有一种确切的压力测定法。作者最近正在研究一种用超声波对心脏、大血管乃至微循环的任意一个部位进行非侵袭性地实时测量压力的方法。该方法根据液体中微小气泡共振频率的变化,应用压力变化越是在高压下越向高频侧移动的原理,从体表对微小血管和心腔动态性内压进行非侵袭的测量。用比红细胞更小的 At present, it is still very difficult to measure the pressure in a tiny blood vessel with a diameter of 1 mm or less by the catheter method. In particular, there is no exact pressure measurement method for the arterioles, the fine vein and the capillary network under the diameter of 100 μm. The authors are currently working on a method for the noninvasive real-time measurement of pressure in any part of the heart, macrovascular and even microcirculation using ultrasound. According to the change of resonant frequency of tiny bubbles in a liquid, the method is based on the principle that the pressure changes as it moves toward the high frequency side under high pressure. Noninvasive measurement of the dynamic pressure of tiny blood vessels and cardiac chambers from the surface is performed. Use less than red blood cells