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Abstract #5212

Test-Retest Evaluation Spontaneous FMRI Signal: HCP 7T Reliability

Xi-Nian Zuo1, Yin-Shan Wang1, Dan-Yang Sui1, and Xiu-Xia Xing2

1Chinese Academy of Sciences, Beijing, People's Republic of China, 2Beijing University of Technology, Beijing, People's Republic of China

We employed the test-retest HCP datasets scanned at both 3T and 7T scanners from a same group of 62 healthy adults to compare differences in common functional metrics of the human connectome between 3T and 7T rfMRI settings in terms of their regional variations, individual variability and test-retest reliability. Our findings revealed metric-specific differences in both spatial patterns and reliability between 3T and 7T scanners whereas 7T improves reliability of global metrics but reduces reliability of local metrics of the functional connectomes.

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