Navigation überspringen
Universitätsbibliothek Heidelberg
Status: Bibliographieeintrag

Verfügbarkeit
Standort: ---
Exemplare: ---
heiBIB
 Online-Ressource
Verfasst von:Gagnon, Hervé [VerfasserIn]   i
 Grychtol, Bartłomiej [VerfasserIn]   i
 Adler, Andy [VerfasserIn]   i
Titel:A comparison framework for temporal image reconstructions in electrical impedance tomography
Verf.angabe:Hervé Gagnon, Bartłomiej Grychtol and Andy Adler
E-Jahr:2015
Jahr:26 May 2015
Umfang:15 S.
Fussnoten:Gesehen am 17.12.2018
Titel Quelle:Enthalten in: Physiological measurement
Ort Quelle:Bristol : IOP Publ., 1993
Jahr Quelle:2015
Band/Heft Quelle:36(2015), 6, Seite 1093-1107
ISSN Quelle:1361-6579
Abstract:Electrical impedance tomography (EIT) provides low-resolution images of internal conductivity distributions, but is able to achieve relatively high temporal resolutions. Most EIT image reconstruction algorithms do not explicitly account for the temporal constraints on the measurements or physiological processes under investigation. Instead, algorithms typically assume both that the conductivity distribution does not change during the acquisition of each EIT data frame, and that frames can be reconstructed independently, without consideration of the correlation between images. A failure to account for these temporal effects will result in aliasing-related artefacts in images. Several methods have been proposed to compensate for these effects, including interpolation of raw data, and reconstruction algorithms using Kalman and temporal filtering. However, no systematic work has been performed to understand the severity of the temporal artefacts nor the extent to which algorithms can account for them. We seek to address this need by developing a temporal comparison framework and figures of merit to assess the ability of reconstruction algorithms to account for temporal effects. Using this approach, we compare combinations of three reconstruction algorithms using three EIT data frame types: perfect, realistic and interpolated. The results show that, without accounting for temporal effects, artefacts are present in images for dynamic conductivity contrasts at frequencies 10-20 times slower than the frame rate. The proposed methods show some improvements in reducing these artefacts.
DOI:doi:10.1088/0967-3334/36/6/1093
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext: http://dx.doi.org/10.1088/0967-3334/36/6/1093
 Volltext: http://stacks.iop.org/0967-3334/36/i=6/a=1093
 DOI: https://doi.org/10.1088/0967-3334/36/6/1093
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1585607061
Verknüpfungen:→ Zeitschrift

Permanenter Link auf diesen Titel (bookmarkfähig):  https://katalog.ub.uni-heidelberg.de/titel/68341105   QR-Code
zum Seitenanfang