摘要
目的评价磁共振系统的时间稳定性,提高临床和科研工作结果的可靠性。方法结合已有的评价方法对磁共振系统进行时间稳定性评价,探讨SPM在评价时间稳定性方面的应用。结果得到了系统各轴向的具体偏移信息,分析评价该结果对时间稳定性的影响。结论本实验获取了各轴向的偏移量和旋转量,更为详细地显示系统的稳定性情况,可以用于指导临床和科研工作。
Objective To evaluate the time stability of MRI systems and improve the reliability of clinical and research results.Methods Combined with the existing evaluation methods for assessment of MRI time stability, to discuss the application of SPM in evaluating time stability.Results Obtained the excursion information of each axis and roller, and analyzed the effects of the excursion on the time stability of MRI systems.Conclusion The result of the study shows the time stability of the system in detail, including translation and rotation, which can be used to guide the clinical and scientiifc research.
出处
《中国医疗设备》
2014年第11期19-21,52,共4页
China Medical Devices
基金
军事医学计量专项课题(2011-JL2-014)
关键词
SPM
磁共振成像
头动校正
时间稳定性
statistical parametric mapping
MRI
realignment
time stability
