Greitans M, Mikelsons A, Möller K O
Institute of Electronics and Computer Science, Riga, Latvia.
Technol Health Care. 1999;7(2-3):125-35.
Non-invasive measuring of blood perfusion of tissue is important for establishing the influence of vascular diseases on microcirculation. A signal processing method for laser-Doppler flowmetry is presented in this article. The method is based on the digital filtering. A couple of filters are suggested. One of them is a digital passband filter, second - a digital filter transforming spectrum P(f) of the input signal to fP(f) spectrum. Performance of the suggested method is investigated in comparison with behaviour of the PERIMED instrument as well as with applications based on DFT.
组织血流灌注的无创测量对于确定血管疾病对微循环的影响非常重要。本文提出了一种激光多普勒血流仪的信号处理方法。该方法基于数字滤波。文中给出了几种滤波器。其中一种是数字带通滤波器，另一种是将输入信号的频谱P(f)转换为fP(f)频谱的数字滤波器。通过与PERIMED仪器的性能以及基于离散傅里叶变换（DFT）的应用进行比较，对所提方法的性能进行了研究。
