Title :
Localization of focal cerebral ischemia by Karhunen-Loeve transform of the EEG
Author :
Czinege, Laszlo ; Farkas, Zsolt ; Urbanics, Rudolf ; Benyo, Zoltan
Author_Institution :
Dept. of Process Control, Tech. Univ. Budapest, Hungary
fDate :
31 Oct-3 Nov 1996
Abstract :
The electroencephalogram has important diagnostic value when cerebral perfusion is disturbed. An important field of EEG examination is the localization of the focal ischemic area of the brain. In this case we have to take into consideration that there is no control or baseline data to make a comparison, and that collateral circulation may as well compensate the acute effects of the lack of blood supply. A method based on Karhunen-Loeve transform is presented, which shows good results in localising ischemia as characterized by similarity of the signals over several channels
Keywords :
blood flow measurement; electroencephalography; medical signal processing; transforms; Karhunen-Loeve transform; blood supply; cerebral perfusion; collateral circulation; diagnostic value; electroencephalogram examination; focal ischemic area; localization; Biological system modeling; Brain modeling; Covariance matrix; Electroencephalography; Flexible manufacturing systems; Ischemic pain; Karhunen-Loeve transforms; Medical simulation; Physiology; Process control;
Conference_Titel :
Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-3811-1
DOI :
10.1109/IEMBS.1996.651996
