Dynamic shimming system for magnetic resonance imaging

A dynamic shimming system for magnetic resonance imaging comprises a coil and magnet part, a shimming power supply, a control system and a computer, pre-scanning is carried out before each imaging sequence work through a compensation algorithm, and according to different imaging sequence parameters, scanned samples and environment changes, through operation iteration, the dynamic shimming of the magnetic resonance imaging is carried out at different moments in the whole sequence scanning process. A differentiated control current is set for each shimming coil and is input to the shimming coils through a control system and a shimming power supply. In a magnetic resonance imaging sequence scanning process, according to changes of factors such as a selected sequence, a tested sample, a radio frequency field and a gradient field, the system carries out real-time dynamic compensation on a magnetic field, the uniformity of the magnetic field is kept, and the imaging quality is improved. 一种磁共振成像的动态匀场系统，包括线圈和磁体部分、匀场电源