Hoon Oh Suk, Kon Chun In, Yeol Lee Soo, Hyoung Cho Min, Woong Mun Chi
Graduate School of East-West Medical Science, Kyung Hee University, Kyungki, Korea.
Magn Reson Imaging. 2003 Nov;21(9):1023-8. doi: 10.1016/s0730-725x(03)00213-3.
Magnetic resonance current density imaging (MRCDI) is a useful method for measuring electrical current density distribution inside a subject. Due to the requirement of subject rotations in MRCDI, MRCDI has not been widely applied to in vivo studies. In this paper, we propose a new current density image (CDI) reconstruction method by which a single component of the current density can be imaged by MRCDI without subject rotations. After measuring one of the two magnetic field components, produced by the current density component passing through the measurement plane, we have reconstructed the current density component images in the spatial frequency domain. Even though the proposed method has a limitation that the area of magnetic field measurement should be much larger than that of the current density, the proposed method is expected to expedite MRCDI applications to in vivo studies.
磁共振电流密度成像（MRCDI）是一种用于测量受试者体内电流密度分布的有用方法。由于MRCDI需要受试者旋转，因此尚未广泛应用于体内研究。在本文中，我们提出了一种新的电流密度图像（CDI）重建方法，通过该方法，无需受试者旋转，MRCDI即可对电流密度的单个分量进行成像。在测量了由穿过测量平面的电流密度分量产生的两个磁场分量之一后，我们在空间频域中重建了电流密度分量图像。尽管所提出的方法存在磁场测量面积应远大于电流密度面积的局限性，但该方法有望加快MRCDI在体内研究中的应用。
