摘要
目前3T磁共振设备的装机数量越来越多,随着场强的提高,不仅可以改善图像质量,同时也会带来一系列的伪影问题。这些伪影可能是由于高场本身的物理限度或者序列没有进行充分的优化所致。本文对3T磁共振设备的主要伪影问题进行分析,设法消除或将它们减小到最小程度,充分发挥3T磁共振设备的优势。
MRI systems at a field-strength of 3 T has been used more and more frequently in recent years.The high-field systems,not only can benefit the imaging quality,but also can cause some artifacts.These artifacts are caused either by physical limitations related to the high-field strength or by protocols that are not yet fully optimized for the high-fi eld strength.The most common artifacts will be analyzed in this paper,in order to mitigate or avoid them and take best advantage of high-field 3 T system.
出处
《磁共振成像》
CAS
2010年第4期291-294,共4页
Chinese Journal of Magnetic Resonance Imaging
关键词
磁共振成像
高场
伪影
Magnetic resonance imaging
High field
Artifacts
