Magnetic resonance current density imaging using one component of magnetic flux density

Date

2013-03-01

Author

Ersoz, Ali
Eyüboğlu, Behçet Murat

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Current density distribution generated inside a volume conductor by externally applied currents can be calculated by using spatial distribution of its magnetic flux density, . The imaging modality used to reconstruct images of the current density distribution is known as magnetic resonance current density imaging (MRCDI). In MRCDI, spatial distribution of the current-induced magnetic flux density is measured on a magnetic resonance imaging (MRI) platform. Calculation of current density distribution from magnetic flux density measurements requires all three components of . As only the component of which is in parallel with the main field of the MRI system can be measured, rotation of the subject is necessary to be able to acquire all three components of for a given current injection pattern. Rotating the subject inside the magnet is not trivial even for small-sized objects and remains as a strong limitation to clinical applicability of the technique. In this study, a novel MRCDI reconstruction algorithm using only one component of is proposed to eliminate the need for subject rotation. Reconstruction performance of the proposed algorithm is evaluated on numerical and experimental models. Images obtained by the proposed and the conventional MRCDI algorithms, which utilizes three components of , are compared.

Subject Keywords

Magnetic resonance imaging, Current density imaging, Electrical impedance tomography

URI

https://hdl.handle.net/11511/49213

Journal

INVERSE PROBLEMS IN SCIENCE AND ENGINEERING

DOI

https://doi.org/10.1080/17415977.2012.683790

Collections

Department of Electrical and Electronics Engineering, Article

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Citation Formats

A. Ersoz and B. M. Eyüboğlu, “Magnetic resonance current density imaging using one component of magnetic flux density,” INVERSE PROBLEMS IN SCIENCE AND ENGINEERING, pp. 184–196, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/49213.