Abstract #2047
Whole-brain, sub-second data collection for task-evoked fMRI studies using simultaneous multi-slice/multiband acquisition
Stephanie McMains 1 , R Matthew Hutchison 1,2 , and Ross W Mair 1,3
1
Center for Brain Science, Harvard
University, Cambridge, MA, United States,
2
Department
of Psychology, Harvard University, Cambridge, MA, United
States,
3
AA
Martinos Center for Biomedical Imaging, Massachusetts
General Hospital, Charlestown, MA, United States
We studied visual cortex response at a variety of slice
accelerations and TR reductions to investigate the
advantages and potential costs for task-based fMRI
associated with parameters that allow for whole-brain,
sub-second data collection with both block and
event-related design paradigms. tstats were
significantly higher in the block-design short-TR scans,
due to the much larger number of time-points acquired.
However, a significant increase is still observed after
auto-regressive modeling correction, indicating benefits
to block-design experiments from high temporal
resolution acquisitions. The observation of higher betas
in the event-related design experiment with the short-TR
scans is unexpected, and perhaps indicates the
hemodynamic response is captured more accurately with
the higher temporal resolution.
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.
