Re: [Freesurfer] Motion Correction

it's really an empirical question. If you had enough subjects you could look at test/retest (across session) stability using 1 vs. 2, but that doesn't get at accuracy. For accuracy the only thing to do is reconstruct the single runs and the average and see which looks better to you.

cheers Bruce

On Fri, 4 Jun 2010, houman.ebrahimi wrote:

Hi,

Regarding motion correction at 1.5T, we are using a Siemens Magnetom Avanto 1.5T with:

12 channel coil iPAT 2 (GRAPPA, matrix coil mode: triple) Base resolution 256

Is a single run sufficient for FS without motion correction? The images don't display any obvious motion artifact.