磁共振图像伪影的产生机理及其解决办法的研究

Magnetic Resonance Imaging Artifact Generating Mechanism and Solution Research

目的研究磁共振成像伪影产生的机理,探讨磁共振伪影处理的解决办法。方法回顾性分析了87例日立0.3T、GE 1.5T、GE 3.0T磁共振扫描仪的图像伪影。结果磁共振常见的几种伪影主要有:射频伪影、梯度伪影、运动伪影、化学位移伪影、卷摺伪影及金属伪影。结论了解磁共振图像伪影的产生原因,寻找解决办法,对改善图像质量,提高诊断率具有重要意义。

Objective To study the magnetic resonance imaging artifact emergence mechanism, this paper discusses the disposal of MRI artifacts solution. Methods A retrospective analysis of 87 cases of Hitachi 0.3 T, GE sl.5 T, GE MRI scanner T 3.0 image artifacts. Results Common artifacts of magnetic resonance mainly have： RF artifact, gradient artifact, motion artifact, and chemical shift artifact, wrap artifact and metal artifacts. Conclusion Understanding reasons of magnetic resonance imaging artifact, finding solutions, are important to improve image quality and increase diagnosis rate.