Normalization of vasomotion in laser Doppler perfusion monitoring

被引：4
|
作者：
Graaff, Reindert [1 ]
Morales, Fernando [1 ]
Smit, Andries J.
de Jong, Ed D. [1 ]
de Mul, Frits F. A. [1 ]
Rakhorst, Gerhard [1 ]
机构：
[1] Univ Groningen, Univ Med Ctr Groningen, Dept Biomed Engn, NL-9713 EZ Groningen, Netherlands
来源：
2007 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-16 | 2007年
关键词：
D O I：
10.1109/IEMBS.2007.4353229
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
Laser Doppler flux signals show temporal fluctuations caused by physiological phenomena like heartbeat, respiration, and local variation of vascular tonus, vasomotion. This study investigates the influence of fiber arrangement, equipment and two probe locations on the variations in laser Doppler flux signals in five frequency bands in the absence of provocations. Two probes with detecting optical fibers at several distances from the illuminating source were used, as well as instruments from two manufacturers. The results show that normalization of the filtered flux signals with the mean flux leads to an enormous decrease of the influence of fiber distance. The difference between instruments is small after normalization. Some influence of probe location remains after normalization. Development of a standard method for normalization of the variations in laser Doppler signals is recommended.
引用
收藏
页码：4076 / 4079
页数：4
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