Analysis and discussion on generating mechanism and solutions of MRI static magnetic field artifacts / 医疗卫生装备

ABSTRACT

Objective To observe the value of the corresponding solutions for MRI static magnetic field artifacts after analyzing their generating mechanism.Methods Different solutions was used to eliminate static magnetic field artifacts,such as improving inner and outer background,calibrating software and hardware,editing parameters,instructing patients,etc.in scanning patients or phantom with Siemens Impact 1.0T and GE Signa 1.5T MR by the use of SE or GRE sequences.Results Static magnetic field artifacts were controlled to different extent and the quality of the mass MR images were improved.Conclusion Most static magnetic field artifacts can be eliminated completely or reduced by using corresponding solutions,so more corrective information can be provided to clinic.