Effects of Gradient Coil Noise and Gradient Coil Replacement on the Reproducibility of Resting State Networks.

ABSTRACT: The stability of the MRI scanner throughout a given study is critical in minimizing hardware-induced variability in the acquired imaging data set. However, MRI scanners do malfunction at times, which could generate image artifacts and would require the replacement of a major component such as its gradient coil. In this article, we examined the effect of low intensity, randomly occurring hardware-related noise due to a faulty gradient coil on brain morphometric measures derived from T1-weighted images and resting state networks (RSNs) constructed from resting state functional MRI. We also introduced a method to detect and minimize the effect of the noise associated with a faulty gradient coil. Finally, we assessed the reproducibility of these morphometric measures and RSNs before and after

SUBMITTER: Bagarinao E 

PROVIDER: S-EPMC5917444 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature