OPTIMAL SIGNAL RECOVERY FROM INTERLEAVED FMRI DATA.
OPTIMAL SIGNAL RECOVERY FROM INTERLEAVED FMRI DATA.
复制标题
从交错 FMRI 数据中恢复最佳信号。
DOI：
10.1109/isbi.2015.7164131
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Razlighi,QolamrezaR
中科院分区：
文献类型：
--
作者：
Parker,David;Gerraty,RaphaelT;Razlighi,QolamrezaR
由于fMRI采集协议的性质，采集平面中的切片不是同时或顺序采集的，因此在时间上彼此未对准。切片定时校正（STC）是校正这种未对准的关键预处理步骤。STC应用于所有主要软件包。到目前为止，很少有努力去评估STC的最佳方法。在这项研究中，我们研究了最流行的方法STC，并提出了一个新的最佳方法的基础上的抽样理论的基本性质。我们评估这种方法使用20模拟fMRI数据，并证明STC的效用一般以及所提出的方法相比，现有的优越性。
Due to the nature of fMRI acquisition protocols, slices in the plane of acquisition are not acquired simultaneously or sequentially, and therefore are temporally misaligned with each other. Slice timing correction (STC) is a critical preprocessing step that corrects for this misalignment. STC is applied in all major software packages. To date, little effort has gone towards assessing the optimal method of STC. In this study, we examine the most popular methods of STC, and propose a new optimal method based on the fundamental properties of sampling theory. We evaluate this method using 20 simulated fMRI data and demonstrate the utility of STC in general as well as the superiority of the proposed method in comparison to existing ones.