论文部分内容阅读
本文提出并解析了一种无创伤式心脏测量的新技术。这种技术能测出某些小气泡(注入血液循环系统的)在通过心脏时散射的超声频谱,并证明了在这些频谱上观察到的谐振频率与心脏的压力变化成正比。因而可以把谐振的变差定标给出心脏房室内压力的幅度。文中介绍了这种方法在实验室的初步测试,证明了所予言的变化与气泡在水中的谐振频率上的压力是一致的。
This paper presents and analyzes a new technique for non-invasive cardiac measurement. This technique detects the ultrasound spectra of some small bubbles (injected into the blood circulation) that scatter as they pass through the heart and demonstrates that the resonant frequencies observed on these spectra are directly proportional to changes in heart pressure. Therefore, the calibration of the variation of resonance gives the amplitude of the pressure in the heart chamber. This paper presents a preliminary test of this method in the laboratory and proves that the change described here is consistent with the pressure at the resonance frequency of bubbles in water.