Inversion of simulated evoked potentials to charge distribution inside the human brain using an algebraic reconstruction technique

Uzunoglu, NK; Ventouras, E; Papageorgiou, C; Rabavilas, A; Stefanis, C

dc.contributor.author	Uzunoglu, NK	en
dc.contributor.author	Ventouras, E	en
dc.contributor.author	Papageorgiou, C	en
dc.contributor.author	Rabavilas, A	en
dc.contributor.author	Stefanis, C	en
dc.date.accessioned	2014-03-01T01:08:24Z
dc.date.available	2014-03-01T01:08:24Z
dc.date.issued	1991	en
dc.identifier.issn	0278-0062	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10467
dc.subject	Algebraic Reconstruction Technique	en
dc.subject	Analytical Method	en
dc.subject	Charge Distribution	en
dc.subject	Computer Simulation	en
dc.subject	Evoked Potential	en
dc.subject	Functional Integration	en
dc.subject	Human Brain	en
dc.subject	Integral Equation	en
dc.subject	Inverse Problem	en
dc.subject	X-ray Tomography	en
dc.subject	Self Consistent	en
dc.subject.classification	Computer Science, Interdisciplinary Applications	en
dc.subject.classification	Engineering, Biomedical	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Imaging Science & Photographic Technology	en
dc.subject.classification	Radiology, Nuclear Medicine & Medical Imaging	en
dc.subject.other	Biomedical Engineering - Bioelectric Potentials	en
dc.subject.other	Computerized Tomography	en
dc.subject.other	Electrostatics - Electric Charge	en
dc.subject.other	Image Processing - Reconstruction	en
dc.subject.other	Mathematical Techniques - Boundary Value Problems	en
dc.subject.other	Algebraic Reconstruction	en
dc.subject.other	Concentric Head Model	en
dc.subject.other	Green Function	en
dc.subject.other	Human Head Model	en
dc.subject.other	Inverse Problem	en
dc.subject.other	Simulated Evoked Potentials	en
dc.subject.other	Imaging Techniques	en
dc.title	Inversion of simulated evoked potentials to charge distribution inside the human brain using an algebraic reconstruction technique	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/42.97599	en
heal.identifier.secondary	http://dx.doi.org/10.1109/42.97599	en
heal.language	English	en
heal.publicationDate	1991	en
heal.abstract	An analytic method is presented to estimate the evolution of electrical charge distribution inside the human brain related to the evoked potentials observed on the head surface. A three-layered concentric spherical human head model is adopted to express the relation between the observed potentials on the head surface and the spatial charge distribution inside the brain. In this context an integral equation associated with the three-layered concentric head model Green's function is employed. Assuming the electric potentials are measured on the head surface, the charge distributions inside the human brain are computed by solving an inverse problem. To this end the Green's function integral equation is inverted by using an algebraic reconstruction technique widely employed in X-ray tomography imaging. The accuracy of the proposed technique is examined by employing computer simulations and by checking the self-consistency of the developed algorithm.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Transactions on Medical Imaging	en
dc.identifier.doi	10.1109/42.97599	en
dc.identifier.isi	ISI:A1991GH74400030	en
dc.identifier.volume	10	en
dc.identifier.issue	3	en
dc.identifier.spage	479	en
dc.identifier.epage	484	en