Comparison of BOLD censoring motion metrics when you know the motion (SimPACE)

Censoring methods have gained a lot of attention recently, but, given the importance of head motion artifact in fMRI and fcMRI, more evaluation is necessary. Accurate identification of corrupted volumes, which we evaluate here, is a critical dependency. First we distinguish between intravolumetric (realistic) and volumetric (unrealistic) motion and point out that metrics reported to-date assume volumetric . We simulate intravolume and volumetric motion with a novel acquisition (SimPACE), and compare the true and false positive rates of several motion metrics. We report that volumetric metrics generally perform poorly, with negative implications for censoring and global signal regression.

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.