| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of evaluating blood vessel aging based on a parameter serving as a sufficient index for clinical application and serving as a reference common to any machine and any age group. SOLUTION: Blood vessel aging is evaluated using a blood vessel aging score 1 obtained from a waveform index I (d/a)-(b/a) (wherein a represents the distance from the baseline of the waveform of the rising part of an original waveform to the peak out of the components of an acceleration pulse wave, b represents the distance from the baseline of the second waveform counting from the waveform of the rising part of the original waveform to the peak out of the components of the pulse wave, and d represents the distance from the baseline of the fourth waveform counting from the waveform of the rising part of the original waveform to the peak out of the components of the pulse wave), and a waveform index II (c/a)-(b/a) (wherein a, b are as aforementioned, and c represents the distance from the baseline of the third waveform counting from the waveform of the rising part of the original waveform to the peak out of the components of the pulse wave).
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