CAJ | 학술논문

踝臂指数测量的关键是上、下肢收缩压值的精确测量,由于脚踝部位有多条动脉血管,一些动脉血管在加压袖带较高压力下也不能被完伞阻断,导致下肢收缩压测量出现误差.本文用一维采样数据构建延迟矢量,由这些延迟矢量组成一个内嵌式矩阵,在此基础上对此内嵌式矩阵进行盲信号分离.仿真和实验表明,应用该方法可以分离出脚踝处包含收缩压信息的动脉血管的波动信号,解决了踝臂指数下肢收缩压测量的难点.
과비지수측량적관건시상、하지수축압치적정학측량,유우각과부위유다조동맥혈관,일사동맥혈관재가압수대교고압력하야불능피완산조단,도치하지수축압측량출현오차.본문용일유채양수거구건연지시량,유저사연지시량조성일개내감식구진,재차기출상대차내감식구진진행맹신호분리.방진화실험표명,응용해방법가이분리출각과처포함수축압신식적동맥혈관적파동신호,해결료과비지수하지수축압측량적난점.
The accurate measurement of the upper and lower limb systolic blood pressure is the key of ankle-brachial index measurement,because there are a number of ankle arteries and some of them can not be blocked completely under higher pressure from the inflate cuff,lead to some errors in the measurement of lower limb systolic pressure.In this paper,an embedding matrix is constructed out of a series of delay vectors from one-dimensional sampled data,blind signal separation can be performed on the basis of the matrix.Simulation and experiments show that application of the method can separate the fluctuant signals of artery which contain information of ankle systolic blood pressure.It solved difficulty in ankle-brachial index measurement.