实时比较基于快速傅里叶变换（FFT）和自回归（AR）的20兆赫兹脉冲多普勒数据的超声图输出。
Comparison of FFT- and AR-based sonogram outputs of 20 MHz pulsed Doppler data in real time.
作者信息
Güler N F, Kiymik M K, Güler I
机构信息
Kahramanmaraş Sütçü Iman University, Institute of Science and Technology, Kahramanmaraş, Turkey.
出版信息
Comput Biol Med. 1995 Jul;25(4):383-91. doi: 10.1016/0010-4825(95)00024-x.
Real time sonogram outputs of autoregressive (AR) and Fast Fourier Transform (FFT) spectral analysis of 20 MHz pulsed ultrasonic Doppler blood flowmeter are presented. Data obtained from coronary, renal, iliac, digital and mesenteric arteries were processed using AR- and FFT-based spectral analysis techniques and interpretable sonograms were constructed. In comparison with the FFT-based sonogram outputs. AR-based sonogram outputs for 20 MHz pulsed Doppler data provide better results. Hence, the AR modeling is strongly recommended for small vessels with diameters between 1 and 2 mm.
本文展示了20兆赫脉冲超声多普勒血流仪的自回归（AR）和快速傅里叶变换（FFT）频谱分析的实时超声图输出。使用基于AR和FFT的频谱分析技术对从冠状动脉、肾动脉、髂动脉、指动脉和肠系膜动脉获得的数据进行处理，并构建可解释的超声图。与基于FFT的超声图输出相比，基于AR的20兆赫脉冲多普勒数据超声图输出提供了更好的结果。因此，强烈推荐对直径在1至2毫米之间的小血管使用AR建模。
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