SIGNAL-PROCESSING FOR A LASER-DOPPLER BLOOD PERFUSION METER

被引：11
|
作者：
KOELINK, MH [1 ]
DEMUL, FFM [1 ]
LEERKOTTE, B [1 ]
GREVE, J [1 ]
JENTINK, HW [1 ]
GRAAFF, R [1 ]
DASSEL, ACM [1 ]
AARNOUDSE, JG [1 ]
机构：
[1] UNIV TWENTE,DEPT APPL PHYS,POB 217,7600 AE ENSCHEDE,NETHERLANDS
来源：
SIGNAL PROCESSING | 1994年 / 38卷 / 02期
关键词：
DIODE-LASER; LASER-DOPPLER; VELOCIMETRY; ANEMOMETRY; LDA; BLOOD PERFUSION; MICROCIRCULATION; BLOOD FLOW; BLOOD VELOCITY; SIGNAL PROCESSING;
D O I：
10.1016/0165-1684(94)90143-0
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Two signal processing methods for laser-Doppler perfusion velocimetry are presented. The methods are based on the calculation of the moments of the frequency power spectrum. The first uses square-root omega-filtering (omega is the frequency) with analogous electronics, the second uses signal autocorrelation with digital electronics. Comparison is made with a third instrument: a spectrum analyzer coupled to a computer, using Fourier transform techniques. The performance of these setups (sensitivity, limit sensitivity and accuracy) are investigated. We propose a calibration standard for signal processors to be used for blood perfusion measurements. The analogous instrument proved to be the cheapest but the digital instrument had the best performance.
引用
收藏
页码：239 / 252
页数：14
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