It separates from the incident wave and the reflected wave accurately, it offers the arteriosclerosis evaluation device which precision can evaluate the degree of arteriosclerosis with individual difference well.With 1st detection means 1 in 1 places of the living body the artery it detects the pulsating wave which is transmitted, it measures the degree of blood velocity of flow of the artery with 2nd detection means 2 as the displacement signal in the identical place of the living body. Converting the degree of blood velocity of flow which is obtained with 2nd detection means to the displacement signal, after obtaining the incident wave, deducting the incident wave from the displacement signal which is detected by 1st detection means you obtain the reflected wave. Vascular function of the living body is evaluated from amplitude strength of the incident wave and the reflected wave.入射波と反射波とを正確に分離し、個体差による動脈硬化度を精度よく評価できる動脈硬化評価装置を提供する。第1の検出手段1で生体の1箇所において動脈を伝わる脈波を変位信号として検出し、第2の検出手段2で生体の同一箇所において動脈の血流速度を測定する。第2の検出手段で得られた血流速度を変位信号に変換して入射波を得た後、第1の検出手段によって検出された変位信号から入射波を差し引いて反射波を得る。入射波と反射波の振幅強度から生体の血管機能を評価する。
