BACKGROUND/OBJECTIVE In this research, using our proposed method, clinical measurements on the pulsatile velocity of blood vessel wall were conducted for cases with aneurysm. Furthermore, detailed analyses of frequency and attracter of trajectories of velocity of blood vessel wall were conducted. On the basis of these analyses, we tried to conduct unified clarification of the change and disturbance of frequency and wave form of pulsatile velocity of blood vessel wall caused by blood vessel diseases such as aneurysm. RESULTS In the pulsation motion of blood vessel wall, vasomotion, which is a regular long periodic fluctuation of amplitude of the pulsatile velocity of blood vessel wall, was found to exist. Furthermore, the shift of its frequency into low frequency region was found to correspond well with an increase in I∗, an indicator of progressive degree of visco elasticity of blood vessel wall and it reflects the mechanical deterioration of blood vessel wall. This long periodic fluctuation of amplitude of the pulsatile velocity of blood vessel wall exists in the low frequency region that composes the frequency of the pulsatile velocity of blood vessel wall. On the other hand, wave forms in high frequency region that compose the frequency of pulsatile velocity of blood vessel wall were found to correspond well with each pulsatile velocity wave form of blood vessel wall itself and their disturbances caused by the existence of aneurysm was typically reflected in these wave forms. CONCLUSION By dividing frequencies that compose the frequency of the pulsatile velocity of blood vessel wall into low and high frequency regions and conducting analyses at each region, the possibility of accurate selective detection of blood vessel diseases such as mechanical deterioration of blood vessel wall (low frequency region) and morphological change of blood vessel wall that is aneurysm (high frequency region) was indicated.

中文翻译：

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与动脉瘤有关的血管壁搏动运动的频率和混沌分析。

背景/目的在这项研究中，使用我们提出的方法，对患有动脉瘤的患者进行了血管壁搏动速度的临床测量。此外，对血管壁速度的频率和吸引子进行了详细分析。在这些分析的基础上，我们试图统一阐明由动脉瘤等血管疾病引起的血管壁搏动速度的频率和波形的变化和扰动。结果发现，在血管壁的搏动运动中，存在着血管运动，该血管运动是血管壁的脉动速度的振幅的规则的长期周期性波动。此外，发现其频率向低频区域的偏移与I *的增加非常吻合，血管壁粘弹性的渐进程度的指标，它反映了血管壁的机械劣化。血管壁的脉动速度的振幅的这种长时间的周期性波动存在于低频区域中，该低频区域构成了血管壁的脉动速度的频率。另一方面，在高频区域中，构成血管壁搏动频率的波形与每个血管壁本身的搏动速度波形非常吻合，并且通常反映出由于动脉瘤的存在而引起的紊乱。在这些波形中。结论通过将构成血管壁脉动速度频率的频率划分为低频和高频区域，并在每个区域进行分析，