Abstract #3480
Multi-Echo fMRI Atlas of Seed-Based Functional Connectivity with Power Analysis
Prantik Kundu 1 , Mike Irvine 2 , Petra Vertes 2 , Peter Bandettini 1 , Ed Bullmore 2 , and Valerie Voon 2
1
NIMH, Bethesda, MD, United States,
2
Department
of Psychiatry, Cambridge University, Cambridge, United
Kingdom
We present a novel atlas of group-level seed-based
functional connectivity based on multi-echo (ME) fMRI
datasets from a large cohort of normal controls (N=139),
with connectivity estimation by ME independent
coefficients regression (ICR). We demonstrate compelling
cortical and subcortical seed-based connectivity maps,
alongside power analyses showing optimal sample sizes
for assessing specific seed-target connectivity, such as
between orbitofrontal cortex and hippocampus. These
results add to recent findings of 4-fold increases in
tSNR after ME-ICA BOLD denoising, and are relevant to
groups currently acquiring ME data or considering doing
so.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Click here for more information on becoming a member.
