Method for Shimming a Main Magnetic Field
(0) The article relates to a method for shimming a main magnetic field in a magnetic resonance device. The method comprises the steps of generating at least one spatially selective radio frequency pulse (RF) for exciting nuclear spin magnetization that is sensitive to the homogeneity of the main magnetic field, and applying electric currents (DX, DY, DZ) to a shim coil arrangement of the magnetic resonance device such that the main magnetic field is adjusted in accordance to the properties of the acquired magnetic resonance signal (ES). In order to provide a shimming method, in which it is avoided that the shape or size of the selected volume is influenced by the adjustment of the magnetic field distribution generated by the shim coils, the article proposes that he electric currents (DX, DY, DZ) applied to the shim coil arrangement are at least partially switched off during the generation of the spatially selective radio frequency pulse (RF) and switched on during the acquisition of the magnetic resonancesignal (ES).
Lei Ma Xiaoying Tang Xiangqing Wang
Beijing Institute of Technology, China School of Life Science and Technology
国际会议
北京
英文
802-805
2007-05-23（万方平台首次上网日期，不代表论文的发表时间）