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Title: Reconstruction of intracranial evoked current distribution images using generalised matrix inverses and algebraic reconstruction techniques
Authors: Βεντούρας, Ερρίκος Μ.
Ουζούνογλου, Νικόλαος Κ.
Παπαγεωργίου, Χαράλαμπος
Ραμπαβίλας, Ανδρέας Ν.
Κουτσουρής, Δημήτριος Γ.
Contributors: Στεφανής, Κωνσταντίνος Ν.
Item type: Conference publication
Conference Item Type: Full Paper
Keywords: Electric power distribution--Alternating current;Electroencephalography;Κατανομή ρεύματος;Ηλεκτροεγκεφαλογραφία
Subjects: Medicine
Medical technology
Ιατρική τεχνολογία
Issue Date: 25-Jan-2015
Publisher: IEEE
Abstract: Inversion of event-related potentials (ERPs) is studied using simulated potentials, through an analytic technique providing information about extended intracranial distributions, with separate source and sink positions. Comparative performance evaluation of the generalized matrix inverse (GMI) technique and algebraic reconstruction technique (ART) shows that for matrix dimensions used in inverse electroencephalography direct matrix inversion is faster than ART, in the noiseless case. Both methods present the same limitations concerning radial resolution due to their property of providing minimum norm solutions. When noise is present ART algorithms specifically designed for noisy data converge better to the original simulated current source distributions than GMI solutions, even if truncated approximations of pseudoinverses are used
Description: Proceedings of the 18th Ann.Int.Conf. of the IEEE-EMBS, vol.2
Language: English
Citation: Ventouras, E., Uzunoglu, N., Papageorgiou, C., Rabavilas, A., Koutsouris, D. et al. (1996). Reconstruction of intracranial evoked current distribution images using generalised matrix inverses and algebraic reconstruction techniques. In the 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. vol. 2. pp. 825 - 826. Amsterdam, 31 th October - 3rd November 1996.
Conference: Engineering in Medicine and Biology Society
Access scheme: Embargo
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
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