PROBLEM TO BE SOLVED: To provide a vascular index value calculation device that can calculate an index value showing a vascular state with high accuracy.SOLUTION: A frequency transfer characteristic vascular index value calculation device has: a pulse wave acquisition unit for acquiring first pulse wave data on a pulse wave of a first part and second pulse wave data on the pulse wave of a second part a pulse wave frequency characteristic deriving unit for deriving a first frequency characteristic being the frequency characteristic of the first pulse wave from the first pulse wave data, and deriving a second frequency characteristic being the frequency characteristic of the second pulse wave from the second pulse wave data a frequency transfer characteristic calculation unit for calculating a frequency transfer characteristic of a system for assuming the first pulse wave as an input and assuming the second pulse wave as an output a frequency transfer characteristic correction unit for correcting the frequency transfer characteristic by weighting a frequency gain characteristic of the frequency transfer characteristic based on a frequency amplitude characteristic of the first frequency characteristic a response calculation unit for calculating the response of the system to reference input using the corrected frequency transfer characteristic and an index value calculation unit for calculating an index value based on the response calculated.COPYRIGHT: (C)2016,JPO&INPIT【課題】精度よく血管の状態を示す指標値を算出することができる血管指標値算出装置を提供すること。【解決手段】第1部位の脈波の第1脈波データと、第2部位の脈波の第2脈波データと、を取得する脈波取得部と、第1脈波データから第1脈波の周波数特性である第1周波数特性を導出し、第2脈波データから第2脈波の周波数特性である第2周波数特性を導出する脈波周波数特性導出部と、第1脈波を入力とし第2脈波を出力とする系の周波数伝達特性を算出する周波数伝達特性算出部と、周波数伝達特性の周波数ゲイン特性を第1周波数特性の周波数振幅特性に基づいて重み付けすることにより周波数伝達特性を修正する周波数伝達特性修正部と、修正された周波数伝達特性を用いて参照入力に対する系の応答を算出する応答算出部と、算出した応答に基づいて指標値を算出する指標値算出部と、を有する周波数伝達特性血管指標値算出装置。【選択図】図3
