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

页码：239 / 252

页数：14

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