Congcong Liu1,2, Shi Su1, Ye Li1,2, Xin Liu1,2, Hairong Zheng1,2, Dong Liang1,2,3, and Haifeng Wang1,2
1Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China, 2Shenzhen College of Advanced Technology, University of Chinese Academy of Sciences, Shenzhen, China, 3Research Center for Medical AI, Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences, Shenzhen, China
1Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China, 2Shenzhen College of Advanced Technology, University of Chinese Academy of Sciences, Shenzhen, China, 3Research Center for Medical AI, Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences, Shenzhen, China
A new type of openstructure nonlinear matrix gradient coil is designed. The linear gradient coil in traditional MRI can be eliminated by adopting time-segment control of the matrix coil element, thereby making the whole system more concise and low-cost.
Fig. 1 The 3D model diagram of the proposed
biplanar matrix coil and the open-structure low-field MRI system. The green and
red boxes indicate the specific installation location of the coil. The
red and green arrows indicate the biplanar matrix coil and the low-field MRI
system, respectively.
Fig. 4 Contour and
field of the proposed biplanar Matrix Z2 Nonlinear Gradient Coil (a) Matrix
coil composed of coil elements with the same structure. The green and red boxes
indicate the position of the coil, as seen as Fig. 1. (b) The model
diagram of the different CP’s positions of the Z2 spherical harmonic field
being moved at different times in (a). The energization sequence of the biplanar
matrix coil of 4×4 element is from t8
to t9, and t7 to t10 follow the arrow
direction.
