Development of current density and impedance imaging with MRI

提出的研究的总体目标是开发新的方法成像电场和组织的性质。目的是成像电流密度和电导率。这些目标与电阻抗断层扫描（EIT）的目标相似。方法上的主要区别在于，我们的电导率测量是基于用磁共振成像仪（MRI）进行的内部磁场测量。提议的工作是1987年开始的一个项目的延续，该项目导致了电流密度成像（CDI）的发展。CDI使用核磁共振成像来测量磁场矢量B，它是由电流流过的区域内的体积电流产生的。CD矢量J是使用麦克斯韦方程J=curl(B)/m0来计算的。

The overall objective of the proposed research is to develop new methods for imaging electrical fields and properties of tissues. The intent is to image electric current density and conductivity. These goals are similar to those of Electrical Impedance Tomography (EIT). The major methodological difference is that we base our conductivity measurements on internal magnetic field measurements made with a Magnetic Resonance Imager (MRI). The proposed work is a continuation of a program begun in 1987, which has lead to the development of Current Density (CD) Imaging (CDI). CDI uses a MRI to measure the magnetic vector field, B, produced by volume currents inside the region where the current is flowing. The CD vector, J, is computed using Maxwell's equation, J=curl(B)/m0.