Correcting inhomogeneity-induced distortion in fmri using non-rigid registration.

We describe a constrained non-linear registration method for correcting fMRI distortion that uses T 1-weighted images and does not require field maps. We compared resting state results from uncorrected fMRI, fMRI data corrected with field maps, and fMRI data corrected with our proposed method in data from 20 subjects. The results show that the estimated field maps were similar to the acquired field maps and that the proposed method reduces the overall error in independent component location.
PMID: 26617955 [PubMed - as supplied by publisher]

Source: Proceedings - International Symposium on Biomedical Imaging - December 4, 2015 Category: Radiology Tags: Proc IEEE Int Symp Biomed Imaging Source Type: research