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dc.contributor.authorBirgül, Ö.en_US
dc.contributor.authorEyüboğlu, B. M.en_US
dc.contributor.authorİder, Y. Z.en_US
dc.date.accessioned2016-02-08T10:28:54Z
dc.date.available2016-02-08T10:28:54Z
dc.date.issued2003en_US
dc.identifier.issn0031-9155
dc.identifier.urihttp://hdl.handle.net/11693/24405
dc.description.abstractMagnetic resonance electrical impedance tomography (MR-EIT) is an emerging imaging technique that reconstructs conductivity images using magnetic flux density measurements acquired employing MRI together with conventional EIT measurements. In this study, experimental MR-EIT images from phantoms with conducting and insulator objects are presented. The technique is implemented using the 0.15 T Middle East Technical University MRI system. The dc current method used in magnetic resonance current density imaging is adopted. A reconstruction algorithm based on the sensitivity matrix relation between conductivity and only one component of magnetic flux distribution is used. Therefore, the requirement for object rotation is eliminated. Once the relative conductivity distribution is found, it is scaled using the peripheral voltage measurements to obtain the absolute conductivity distribution. Images of several insulator and conductor objects in saline filled phantoms are reconstructed. The L2 norm of relative error in conductivity values is found to be 13%, 17% and 14% for three different conductivity distributions.en_US
dc.language.isoEnglishen_US
dc.source.titlePhysics in Medicine and Biologyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1088/0031-9155/48/21/003en_US
dc.subjectCurrent densityen_US
dc.subjectElectric conductivityen_US
dc.subjectElectric conductorsen_US
dc.subjectElectric insulatorsen_US
dc.subjectElectric potentialen_US
dc.subjectMagnetic fluxen_US
dc.subjectMagnetic resonanceen_US
dc.subjectMagnetic resonance imagingen_US
dc.subjectMagnetic impedanceen_US
dc.subjectElectric impedance tomographyen_US
dc.subjectSodium chlorideen_US
dc.subjectAlgorithmen_US
dc.subjectAnalytical erroren_US
dc.subjectCalculationen_US
dc.subjectControlled studyen_US
dc.subjectDensityen_US
dc.subjectElectric currenten_US
dc.subjectElectric potentialen_US
dc.subjectFinite element analysisen_US
dc.subjectImage reconstructionen_US
dc.subjectImpedanceen_US
dc.subjectMagnetic fielden_US
dc.subjectMeasurementen_US
dc.subjectNuclear magnetic resonance imagingen_US
dc.subjectSensitivity analysisen_US
dc.subjectSignal noise ratioen_US
dc.subjectTomographyen_US
dc.subjectElectric Impedanceen_US
dc.subjectImage Enhancementen_US
dc.subjectReproducibility of Resultsen_US
dc.subjectSensitivity and Specificityen_US
dc.titleExperimental results for 2D magnetic resonance electrical impedance tomography (MR-EIT) using magnetic flux density in one directionen_US
dc.typeArticleen_US
dc.departmentDepartment of Electrical and Electronics Engineering
dc.citation.spage3485en_US
dc.citation.epage3504en_US
dc.citation.volumeNumber48en_US
dc.citation.issueNumber21en_US
dc.identifier.doi10.1088/0031-9155/48/21/003en_US
dc.publisherInstitute of Physics Publishingen_US


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