NDLI: In-vivo measurement of relationship between applied current amplitude and current density magnitude from 10 mA to 110 mA

Content Provider	IEEE Xplore Digital Library
Author	DeMonte, T.P. Dinghui Wang Weijing Ma Jia-Hong Gao Joy, M.
Copyright Year	2009
Description	Author affiliation: Field Metrica Inc., Toronto, ON M8V 1W1 Canada (DeMonte, T.P.) \|\| Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9 Canada (Dinghui Wang; Weijing Ma; Joy, M.) \|\| Department of Radiology, University of Chicago, Chicago, IL 60637 USA (Jia-Hong Gao)
Abstract	Current density imaging (CDI) is a magnetic resonance imaging (MRI) technique used to quantitatively measure current density vectors throughout the volume of an object/subject placed in the MRI system. Electrical current pulses are applied externally to the object/subject and are synchronized with the MRI sequence. In this work, CDI is used to measure average current density magnitude in the torso region of an in-vivo piglet for applied current pulse amplitudes ranging from 10 mA to 110 mA. The relationship between applied current amplitude and current density magnitude is linear in simple electronic elements such as wires and resistors; however, this relationship may not be linear in living tissue. An understanding of this relationship is useful for research in defibrillation, human electro-muscular incapacitation (e.g. TASER®) and other bioelectric stimulation devices. This work will show that the current amplitude to current density magnitude relationship is slightly nonlinear in living tissue in the range of 10 mA to 110 mA.
Starting Page	3177
Ending Page	3180
File Size	1721808
Page Count	4
File Format	PDF
ISBN	9781424432967
ISSN	1557170X
DOI	10.1109/IEMBS.2009.5334544
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Density measurement Current measurement Current density Magnetic resonance imaging Pulse measurements Volume measurement Torso Wires Resistors Defibrillation
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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