Title :
Magnetic resonance-conductivity imaging using 0.15 tesla MRI scanner
Author :
Birgul, O. ; Ozbek, O. ; Eyuboglu, B.M. ; Ider, Y.Z.
Author_Institution :
Dept. of Electr. & Electron. Eng., Middle East Tech. Univ., Ankara, Turkey
Abstract :
A novel imaging method for electrical impedance tomography is implemented. In this method, the magnetic flux density generated by current flowing in a 2D slice is measured using a MRI scanner and the recorded data is used to reconstruct relative conductivity images. The measurements are done from all parts of the imaging region, and therefore sensitivity is space independent. The magnetic flux density is extracted from phase images of the MRI image and a sensitivity based image reconstruction algorithm is used to reconstruct relative conductivity images. The magnetic flux density measured and the conductivity image reconstructed for an insulator object placed in the middle of the imaging region are presented.
Keywords :
biomagnetism; biomedical MRI; electric impedance imaging; image reconstruction; magnetic field measurement; magnetic flux; medical image processing; 0.15 T; 2D slice; MR-EIT; MRI scanner; electrical impedance tomography; image reconstruction algorithm; imaging region; insulator object; magnetic flux density; magnetic flux density measured; magnetic resonance-conductivity imaging; phase images; relative conductivity images; space independent sensitivity; Conductivity measurement; Current measurement; Density measurement; Extraterrestrial measurements; Image reconstruction; Impedance; Magnetic flux; Magnetic flux density; Magnetic resonance imaging; Tomography;
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
Print_ISBN :
0-7803-7211-5
DOI :
10.1109/IEMBS.2001.1019555
