RETROSPECTIVE DETECTION OF INTERLEAVED SLICE ACQUISITION PARAMETERS FROM FMRI DATA.

Publication Type	Academic Article
Authors	Parker D, Rotival G, Laine A, Razlighi Q
Journal	Proc IEEE Int Symp Biomed Imaging
Volume	2014
Pagination	37-40
Date Published	01/01/2014
ISSN	1945-7928
Abstract	To minimize slice excitation leakage to adjacent slices, interleaved slice acquisition is nowadays performed regularly in fMRI scanners. In interleaved slice acquisition, the number of slices skipped between two consecutive slice acquisitions is often referred to as the 'interleave parameter'; the loss of this parameter can be catastrophic for the analysis of fMRI data. In this article we present a method to retrospectively detect the interleave parameter and the axis in which it is applied. Our method relies on the smoothness of the temporal-distance correlation function, which becomes disrupted along the axis on which interleaved slice acquisition is applied. We examined this method on simulated and real data in the presence of fMRI artifacts such as physiological noise, motion, etc. We also examined the reliability of this method in detecting different types of interleave parameters and demonstrated an accuracy of about 94% in more than 1000 real fMRI scans.
DOI	10.1109/ISBI.2014.6867803
PubMed ID	26161244
PubMed Central ID	PMC4494742