NDLI: Inductive Phase Shift Spectroscopy for Volumetric Brain Edema Detection: An Experimental Simulation

Content Provider	IEEE Xplore Digital Library
Author	Gonzalez, C.A. Rojas, R. Villanueva, C. Rubinsky, B.
Copyright Year	2007
Description	Author affiliation: Univ. del Ejercito y Fuerza Aerea, Mexico City (Gonzalez, C.A.)
Abstract	This study evaluates experimentally an induction based non-invasive technique for detection of changes of fluid volume through phase shift measurements as a possible method for volumetric brain edema monitoring. An induction coil - spherical head model was build and tested. The model involves two different diameter coils coaxially centered on a two- compartment glass sphere head model centrally placed with respect to the coils. Three different fluid volumes of physiological saline in 20 ml increments were used to simulate different edema levels. Phase shift of the impedance coils as a function of relative fluid volume was measured at five frequencies (40, 50, 100, 200 and 300 MHz) by a commercial vector network analyzer. The results show significant phase shift increase as a function of frequency and fluid volume. The experiments with the coil- spherical head system suggest that the tested technique has the potential to become a practical configuration for non-invasive volumetric brain edema monitoring.
Starting Page	2346
Ending Page	2349
File Size	362614
Page Count	4
File Format	PDF
ISBN	9781424407873
ISSN	1557170X
DOI	10.1109/IEMBS.2007.4352797
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-08-22
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spectroscopy Phase detection Brain modeling Coils Volume measurement Phase measurement Monitoring Frequency Testing Coaxial components
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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