A comparison of multiband and multiband multiecho gradient-echo EPI for task fMRI at 3 T.

ABSTRACT: A multiband (MB) echo-planar imaging (EPI) sequence is compared to a multiband multiecho (MBME) EPI protocol to investigate differences in sensitivity for task functional magnetic resonance imaging (fMRI) at 3 T. Multiecho sampling improves sensitivity in areas where single-echo-EPI suffers from dropouts. However, It requires in-plane acceleration to reduce the echo train length, limiting the slice acceleration factor and the temporal and spatial resolution Data were acquired for both protocols in two sessions 24 h apart using an adapted color-word interference Stroop task. Besides protocol comparison statistically, we performed test-retest reliability across sessions for different protocols and denoising methods. We evaluated the sensitivity of two different echo-combination strategies fo

SUBMITTER: Fazal Z 

PROVIDER: S-EPMC9783458 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature