摘要
分析了MRI伪影的产生机理及采取相应补偿技术并判断是否有效。使用1.0T和1.5T的MRI扫描患者或水模,从改善外界环境、校正软硬件、修改参数或训练患者等角度采取各种补偿技术消除伪影。使伪影得到不同程度的控制,多数图像质量改善明显。通过相应补偿技术,多数伪影可以完全消除,有些伪影仅能减少或位置改变。
Objective To verify the usefulness of the corresponding compensation techniques for MRI artifacts after analyzing their generation mechanism. Methods Different compensation techniques were used to eliminate relative artifacts from the angle of improving background, calibrating software and hardware, editing parameters or instructing patients in scanning the patient or phantom with 1.0TMR and 1.5TMR. Results Artifacts were controlled to different extents and the quality of most MR images were improved. Conclusion Most artifacts can be eliminated completely by the use of corresponding compensation techniques while some others only be reduced a little or shifted.
出处
《医疗卫生装备》
CAS
2007年第7期62-63,共2页
Chinese Medical Equipment Journal
关键词
MRI
伪影
机理
补偿技术
MRI
artifacts
mechanism
compensation technique
