In Vivo MREIT Experiment of Canine Brain.

Magnetic Resonance Electrical Impedance Tomography (MREIT) has the potential to provide conductivity images with high spatial resolution and accuracy. In this study, we present conductivity images of two normal canine brains using an MREIT system at 3 T field strength. As a step toward clinical imaging experiments of MREIT, we performed MREIT imaging experiments of normal canine brains and could reconstruct high resolution conductivity images. Injecting 5mA imaging current through the heads of anesthetized dogs, we collected induced magnetic flux density data inside the brains and applied the harmonic Bz algorithm to reconstruct conductivity images. Reconstructed conductivity images do not provide absolute conductivity values but show good contrast between white and gray matters. [ABSTRACT FROM AUTHOR]