Analysis and discussion on generating mechanism and solutions of MRI static magnetic field artifacts
- VernacularTitle:MRI静磁场性伪影产生机理分析及解决措施探讨
- Author:
Gang YANG
;
Lin LI
;
Quan LIANG
- Publication Type:Journal Article
- Keywords:
MRI;
static magnetic field;
artifact;
mechanism;
solution
- From:
Chinese Medical Equipment Journal
2003;0(11):-
- CountryChina
- Language:Chinese
-
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.
