PROBLEM TO BE SOLVED: To enable calculation of a blood vessel diameter without using a cuff attached to an organism in principle.SOLUTION: A measuring device includes a blood vessel diameter calculation part for calculating a blood vessel diameter of an organism from a propagation index relating to variation in blood flow rate, variation in blood vessel diameter and a propagation speed of a pulse wave.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2018,JPO&INPIT【課題】生体に装着したカフを原理的には利用しなくても、血管径の算出を可能にする。【解決手段】血流量の変化量、血管径の変化量、および、脈波が伝搬する速度に関する伝搬指標から生体の血管径を算出する血管径算出部を具備する測定装置。【選択図】図4
