摘要
分析对功能 MRI 数据分析影响较为严重的头部运动伪影、生理运动伪影、血流伪影、ghost 伪影及敏感性伪影的产生机制， 综述现有的伪影校正方法，并提出功能 MRI 伪影校正方法研究的一些新方向。
There are many kinds of artifacts in image series of functional MRI, such as head motion artifacts, physiological motion artifacts, blood flow artifacts, ghost artifacts and susceptibility artifacts. These artifacts, which are unassociated with the neural activities, have so severe affects on the analysis of functional MRI data that they not only reduce the sensibility and reliability of functional MRI, but also make the detecting, locating and visualizing of the functional active regions more complicated. The mechanism and the effect of artifacts in functional MRI are discussed here, the methods of correcting artifacts are reviewed, and research prospects are discussed too.
出处
《中国医疗器械杂志》
CAS
2005年第6期429-434,共6页
Chinese Journal of Medical Instrumentation
基金
国家重点基础研究发展计划资助项目(项目编号:2003CB716102)
