Development of current density and impedance imaging with MRI

MRI 电流密度和阻抗成像的发展

• 批准号: 8006-2008
• 负责人: Joy, Michael
• 金额: $ 1.82万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=389638
• 关键词: Development; current; density; impedance; imaging

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.

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属性。 其目的是对电流密度和电导率进行成像。 这些目标类似于电阻抗断层扫描（EIT）的目标。 主要的方法差异是，我们的电导率测量基于磁共振成像仪（MRI）进行的内部磁场测量。 这项工作是1987年开始的一项计划的延续，该计划导致了电流密度（CD）成像（CDI）的发展。 CDI使用MRI来测量由电流流动区域内的体积电流产生的磁矢量场B。 CD矢量J使用麦克斯韦方程J=旋度（B）/m0计算。