Imaging Electrical Current Density Using Nuclear Magnetic Resonance

Authors : B Murat EYÜBOĞLU

Pages : 201-214

View : 18 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In this study, images of nonuniform and uniform electric current density in conductor phantoms, which contain magnetic resonance active nuclei, are produced using Magnetic Resonance Imaging insert ignore into journalissuearticles values(MRI);. A standard spin echo pulse sequence is used, with the addition of a bipolar current pulse. The flux density parallel to the main magnetic field, generated by the current pulse, is encoded in the phase of the complex MR image. The spatial distribution of magnetic flux density is extracted from the phase image. Current density is calculated using the magnetic flux density. This fairly recent technique is known as Magnetic Resonance Current Density Imaging insert ignore into journalissuearticles values(MRCDI);. In this paper, images of magnetic flux density, generated by uniform and nonuniform current flow, and the current density image of a uniform current flow are given. Current density levels as low as 1m A/mm2 are measured. Effects of current density on k-space data are also discussed.
Keywords : Turk J Elec Eng Comp Sci, 6, 1998, 201 214 Turk J Elec Eng Comp Sci, vol 6, iss 3