Design of small-scale gradient coils in magnetic resonance imaging by using the topology optimization method

作     者：潘辉 贾峰 刘震宇 Maxim Zaitsev Juergen Hennig Jan G Korvink Hui Pan1,2, Feng Jia3, Zhen-Yu Liu1, Maxim Zaitsev3, Juergen Hennig3, and Jan G Korvink4

作者机构：Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 China University of Chinese Academy of Sciences Beijing 100049 China Deptartment of Radiology Medical Physics Medical Center University of Freiburg Faculty of Medicine University of Freiburg Freiburg 79106 Germany Institute of Microstructure Technology Karlsruhe Institute of Technology (KIT) Karlsruhe 76344 Germany 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2018年第27卷第5期

页      面：91-100页

核心收录：

学科分类：07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 070205[理学-凝聚态物理] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.51675506 and 51275504) the German Research Foundation(DFG)(Grant Nos.#ZA 422/5-1 and#ZA 422/6-1) 

主　　题：topology optimization method gradient coils solid isotropic material with penalization magnetic resonance imaging 

摘      要：A topology optimization method based on the solid isotropic material with penalization interpolation scheme is utilized for designing gradient coils for use in magnetic resonance microscopy. Unlike the popular stream function method, the proposed method has design variables that are the distribution of conductive material. A voltage-driven transverse gradient coil is proposed to be used as micro-scale magnetic resonance imaging（MRI） gradient coils, thus avoiding introducing a coil-winding pattern and simplifying the coil configuration. The proposed method avoids post-processing errors that occur when the continuous current density is approximated by discrete wires in the stream function approach. The feasibility and accuracy of the method are verified through designing the z-gradient and y-gradient coils on a cylindrical *** design results show that the proposed method can provide a new coil layout in a compact design space.