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Investigation of altered brain activation based on MultiBand fMRI: A Graph Theory study
pengfei Zhang1, wanjun Hu1, jun Wang1, guangyao Liu1, jing Zhang1, and kai Ai2
1LanZhou University Second Hospital, lanzhou, China, 2Philips Healthcare, Xi'an, China
We tested the advantages of multiband (MB) over single band fMRI from the whole brain network level by using graph theory. Our results suggested that MB rs-fMRI has better capacity in detecting brain network properties with higher temporal SNR and more insightful information.
Fig.1 The averaged functional connectivity matrices of MB rs-fMRI and Conventional rs-fMRI. MB rs-fMRI had a slightly stronger functional connectivity pattern in comparison to conventional acquisition sequence.
Fig.4 The distribution of brain regions, left (L) and right (R), with different nodes efficiency. The regions with significantly higher efficiency were colored in red. Reversely, in blue (P<0.05, FDR corrected). The node sizes indicate the significance of the between-group differences in regional efficiency. OLF=olfactory cortex, SFGmed=superior frontal gyrus, medial, AMYG=amygdala, MOG=Middle occipital gyrus, PreCG=precentral gyrus, SMA=supplementary motor area, SPG=superior parietal gyrus.